Oracle 11g RAC 服務端TAF測試
Oracle RAC 同時具備HA(High Availiablity) 和LB(LoadBalance). 而其高可用性的基礎就是Failover(故障轉移).
它指集羣中任何一個節點的故障都不會影響用戶的使用，連接到故障節點的用戶會被自動轉移到健康節點，從用戶感受而言， 是感覺不到這種切換。
Oracle RAC 的Failover 可以分爲3種：
1. Client-Side Connect time Failover
2. Client-Side TAF
3. Service-Side TAF
Service-Side TAF 可以看作是TAF的一種變種，首先Service-SideTAF也是TAF，所有TAF的特點它都有，其次這種TAF是在服務器上配置的，而不像TAF是在客戶端配置的。
PREFERRED: 首選實例，會優先選擇擁有這個角色的實例提供服務。
AVAILABLE: 後備實例，用戶連接會優先連接PREFFERRED的Instance，當PREFERRED的Instance不可用時，纔會被轉到AVAILBALE的
Instance上。
要使用Server-Side TAF必須配置Service。 Service 可以在創建數據庫時創建，也可以在創建數據庫之後修改，既可以使用dbca配置嚮導，也可以用命令行的 方式配置。
測試結果如下：（測試數據庫版本：11.2.0.4）
當把兩個節點都放到preferred裏面時：
1）斷開節點1的public網絡，會話會發生故障轉移，轉移到其他健康節點，VIP也會漂到另一個節點。
2）節點1宕機（數據庫實例shutdown abort），會話也會發生故障轉移，但是VIP未發生“漂”的動作。
當節點1爲Preferred instances並且節點2爲Available instances的時候
1）當節點1宕機（shutdown abort）故障發生後，不會發生故障轉移（無論是DML還是DQL語句），並且VIP不做漂移動作。
2）當節點2宕機（shutdown abort）故障發生後，不會發生故障轉移（無論是DML還是DQL語句），並且VIP不做漂移動作，但是此情況中節點2集羣層資源全部斷開（VIP除外）
1. 創建TAF服務
1.1 創建TAFService
[oracle@felix1 bin]$ srvctl add service -d felix-s server_taf -r "felix1,felix2" -P BASIC
--這裏的felix是database name，felix1和felix2 是instance name。
1.2 啓動server_taf服務
[oracle@felix1 bin]$ srvctl start service -d felix-s server_taf
1.3 檢查service運行情況
[oracle@felix1 ~]$ srvctl config service -d felix
Service name: felix_taf
Service is enabled
Server pool: felix_felix_taf
Cardinality: 2
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: false
Failover type: NONE
Failover method: NONE
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: felix1,felix2
Available instances:
Service name: server_taf
Service is enabled
Server pool: felix_server_taf
Cardinality: 2
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: true
Failover type: SELECT
Failover method: BASIC
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: felix1,felix2
Available instances:
[oracle@felix1 ~]$
SQL> set lines 200 pages 1000
SQL> col name for a20
SQL> select name,service_id from dba_services;
NAME SERVICE_ID
-------------------- ----------
SYS$BACKGROUND 1
SYS$USERS 2
felix_taf 3
server_taf 4
felixXDB 5
felix 6
6 rows selected.
SQL>
1.4 修改服務端service配置
[oracle@felix2 ~]$ srvctl modify service -d felix-s server_taf -m BASIC -e SELECT -q TRUE -j LONG
[oracle@felix2 ~]$
[oracle@felix2 ~]$
確認修改信息：
col name format a15
col failover_method format a11 heading 'METHOD'
col failover_type format a10 heading 'TYPE'
col failover_retries format 9999999 heading'RETRIES'
col goal format a10
col clb_goal format a8
col AQ_HA_NOTIFICATIONS format a5 heading 'AQNOT'
select name, failover_method, failover_type,failover_retries,goal, clb_goal,aq_ha_notifications
from dba_services where service_id = 4;
NAME METHOD TYPE RETRIES GOAL CLB_GOAL AQNOT
--------------- ----------- ---------- ------------------ -------- -----
server_taf BASIC SELECT 0 NONE LONG YES
SYS >
以上是把兩個節點都放到preferred裏面 ，做以下兩個測試。（1. 斷開public網絡 2 .宕掉節點1（shutdown abort方式））
2 配置TNS文件
---節點1 TNS文件配置信息如下：
[oracle@felix1 admin]$ vi tnsnames.ora
# tnsnames.ora Network Configuration File:/u01/app/oracle/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
FELIX =
(DESCRIPTION =
(ADDRESS= (PROTOCOL = TCP)(HOST = felix-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = felix)
)
)
SERVERTAF =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.10.254)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = server_taf)
)
)
~
"tnsnames.ora" 21L, 540C written
[oracle@felix1 admin]$
---節點2 TNS文件配置信息如下：
[oracle@felix2 admin]$ vi tnsnames.ora
# tnsnames.ora Network Configuration File:/u01/app/oracle/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
FELIX =
(DESCRIPTION =
(ADDRESS= (PROTOCOL = TCP)(HOST = felix-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = felix)
)
)
SERVERTAF =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.10.254)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = server_taf)
)
)
~
~
~
"tnsnames.ora" 22L, 534C written
[oracle@felix2 admin]$
[oracle@felix2 admin]$
3. 通過servertaf服務連接若干個會話
3.1.1 首先創建一個測試表
SQL> create table taf_test as select * from emp;
Table created.
SQL> select * from taf_test;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
------ -------- ------------ ------------------------- ---------- ---------- ----------
7369SMITH CLERK 7902 1980:12:1700:00:00 800 20
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7566JONES MANAGER 7839 1981:04:0200:00:00 2975 20
7654MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698 BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7782CLARK MANAGER 7839 1981:06:0900:00:00 2450 10
7788SCOTT ANALYST 7566 1987:04:1900:00:00 3000 20
7839KING PRESIDENT 1981:11:1700:00:00 5000 10
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7876ADAMS CLERK 7788 1987:05:2300:00:00 1100 20
7900JAMES CLERK 7698 1981:12:0300:00:00 950 30
7902FORD ANALYST 7566 1981:12:0300:00:00 3000 20
7934MILLER CLERK 7782 1982:01:2300:00:00 1300 10
3.1.2 創建連接會話如下：
測試原理：做如下會話連接，因爲是通過@servertaf創建的連接，各個會話會LOAD_BALANCE平均分配各個節點，首先通過v$instance查看會話剛連接時所連接到的實例，然後當節點1故障後，再通過v$instance驗證會話是否直接透明failover到另一個實例，然後對比各節點正常情況與與故障發生後的IP信息（public網絡斷開測試和實例1數據庫宕機測試）。
（測試時會話包括：DML、DQL語句）
會話1：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
select * from taf_test where MGR=7902 FOR UPDATE;
會話2：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
select * from taf_test where MGR=7839 FOR UPDATE;
會話3：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
UPDATE taf_test SET COMM=500 where MGR=7698;
會話4：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=20;
會話5：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=30;
會話6：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=10;
會話7：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=1500;
會話8：
sqlplus scott/oracle@servertaf
select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=800;
4 情況1：public網絡斷開測試
/etc/hosts配置信息：
[root@felix1 ~]#cat /etc/hosts
127.0.0.1 localhost
#192.168.10.17 felix
#felix1
192.168.10.51 felix1
192.168.1.51 felix1-priv
192.168.10.53 felix1-vip
#felix2
192.168.10.52 felix2
192.168.1.52 felix2-priv
192.168.10.54 felix2-vip
#scan-ip
192.168.10.254 felix-scan
4.1 public網絡正常時，各節點主機IP信息：
節點1的IP信息：
[root@felix1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:3340 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1715 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:440627 (430.2 KiB) TX bytes:289324(282.5 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:121841 errors:0 dropped:0 overruns:0 frame:0
TXpackets:100869 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:87853684 (83.7 MiB) TXbytes:60366694 (57.5 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:25989 errors:0 dropped:0 overruns:0 frame:0
TXpackets:25989 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:12266490 (11.6 MiB) TXbytes:12266490 (11.6 MiB)
[root@felix1 ~]#
節點2的IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:4326 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1601 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:590127 (576.2 KiB) TX bytes:260423(254.3 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:104067 errors:0 dropped:0 overruns:0 frame:0
TXpackets:123922 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:61440817 (58.5 MiB) TXbytes:89887987 (85.7 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:34028 errors:0 dropped:0 overruns:0 frame:0
TXpackets:34028 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:18109198 (17.2 MiB) TXbytes:18109198 (17.2 MiB)
[root@felix2 ~]#
4.2 禁掉節點1的public網絡
[root@felix1 ~]# cd /etc/sysconfig/network-scripts/
[root@felix1 network-scripts]# ls
ifcfg-Auto_eth1 ifdown-bnep ifdown-ipv6 ifdown-routes ifup-aliases ifup-ippp ifup-plusb ifup-sit net.hotplug
ifcfg-eth0 ifdown-eth ifdown-isdn ifdown-sit ifup-bnep ifup-ipv6 ifup-post ifup-tunnel network-functions
ifcfg-lo ifdown-ib ifdown-post ifdown-tunnel ifup-eth ifup-isdn ifup-ppp ifup-wireless network-functions-ipv6
ifdown ifdown-ippp ifdown-ppp ifup ifup-ib ifup-plip ifup-routes init.ipv6-global
[root@felix1network-scripts]# ifdown ifcfg-eth0
4.3 查看節點1的public網絡斷開後連接會話信息
1. 對於select for update語句
對於select for update語句連接的會話，當故障發生時，會發生故障轉移。
SCOTT >select instance_name from v$instance;
select * from taf_test where MGR=7902 FOR UPDATE;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SCOTT >
select * from taf_test where MGR=7902 FOR UPDATE
*
ERROR at line 1:
ORA-25408: can not safely replay call
SCOTT >SCOTT >SCOTT >SCOTT >SCOTT>SCOTT >
SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
2. 對於update語句
對於update語句的會話，當故障發生時，並不會發生故障轉移。
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT>select instance_name from v$instance;
UPDATE taf_test SET COMM=500 where MGR=7698;
SCOTT >SCOTT >
ERROR:
ORA-03114: not connected to ORACLE
UPDATE taf_test SET COMM=500 where MGR=7698
*
ERROR at line 1:
ORA-12153: TNS:not connected
Process ID: 10448
Session ID: 34 Serial number: 167
SCOTT >
SCOTT >
SCOTT >select instance_name from v$instance;
ERROR:
ORA-03114: not connected to ORACLE
ERROR:
ORA-03114: not connected to ORACLE
SCOTT >select instance_name from v$instance;
ERROR:
ORA-03114: not connected to ORACLE
ERROR:
ORA-03114: not connected to ORACLE
SCOTT >
對於select 語句
--對於select 語句 1
SCOTT > select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=1000;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SCOTT >
no rows selected
SCOTT >SCOTT >
SCOTT >
SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >
SCOTT >
--對於select 語句 2
SCOTT > select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >
SCOTT >SELECT * FROM taf_test WHERE DEPTNO=30;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7654MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7844 TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7900JAMES CLERK 76981981:12:0300:00:00 950 30
6 rows selected.
SCOTT >SCOTT >select instance_name fromv$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >
--對於select 語句 3
SCOTT > select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=1500;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SCOTT >
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
SCOTT >SCOTT >
SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >
4.4 查看節點1的public網絡斷開後集羣服務信息
查看此時集羣狀態：
[root@felix2 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.FRA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.LISTENER.lsnr
ONLINE OFFLINE felix1
ONLINE ONLINE felix2
ora.OCRVOTING.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.asm
ONLINE ONLINE felix1 Started
ONLINE ONLINE felix2 Started
ora.gsd
OFFLINE OFFLINE felix1
OFFLINE OFFLINE felix2
ora.net1.network
ONLINE OFFLINE felix1
ONLINE ONLINE felix2
ora.ons
ONLINE OFFLINE felix1
ONLINE ONLINE felix2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE felix2
ora.cvu
1 ONLINE ONLINE felix2
ora.felix.db
1 ONLINE ONLINE felix1 Open
2 ONLINE ONLINE felix2 Open
ora.felix.server_taf.svc
1 ONLINE OFFLINE
2 ONLINE ONLINE felix2
ora.felix1.vip
1 ONLINE INTERMEDIATE felix2 FAILED OVER
ora.felix2.vip
1 ONLINE ONLINE felix2
ora.oc4j
1 ONLINE ONLINE felix1
ora.scan1.vip
1 ONLINE ONLINE felix2
4.5 查看節點1的public網絡斷開後各節點主機的IP信息
此時節點1主機的IP信息：
[oracle@felix2 ~]$ ssh [email protected]
The authenticity of host '192.168.1.51(192.168.1.51)' can't be established.
RSA key fingerprint is 8f:c9:7c:11:f0:11:98:51:84:55:36:76:c2:91:59:e7.
Are you sure you want to continue connecting(yes/no)? yes
Warning: Permanently added '192.168.1.51' (RSA) tothe list of known hosts.
[email protected]'s password:
Last login: Tue Dec 8 23:54:11 2015 from 192.168.10.1
[root@felix1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:5351 errors:0 dropped:0 overruns:0 frame:0
TXpackets:2147 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:659945 (644.4 KiB) TX bytes:382170(373.2 KiB)
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:151178 errors:0 dropped:0 overruns:0 frame:0
TXpackets:124346 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:105635142 (100.7 MiB) TXbytes:71654213 (68.3 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:33980 errors:0 dropped:0 overruns:0 frame:0
TXpackets:33980 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:14678241 (13.9 MiB) TXbytes:14678241 (13.9 MiB)
[root@felix1 ~]#
此時節點2主機的IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:6128 errors:0 dropped:0 overruns:0 frame:0
TXpackets:2782 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:797678 (778.9 KiB) TX bytes:449629(439.0 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:2 Link encap:Ethernet HWaddr 08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr 08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:122508 errors:0 dropped:0 overruns:0 frame:0
TXpackets:145890 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:70401384 (67.1 MiB) TXbytes:103002678 (98.2 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:39254 errors:0 dropped:0 overruns:0 frame:0
TXpackets:39254 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:20275770 (19.3 MiB) TXbytes:20275770 (19.3 MiB)
[root@felix2 ~]#
從以上測試可以看出，當節點1的public網絡斷開後，之前連接到節點1的會話（SELECT）故障轉移到了節點2上，並且節點1的VIP(192.168.10.53 felix1-vip)漂到了節點2上（從以上節點2的IP信息的標紅處eth0:2可以看出）。
5. 情況2：節點1宕機測試
[root@felix1 ~]# cat /etc/hosts
127.0.0.1 localhost
#192.168.10.17 felix
#felix1
192.168.10.51 felix1
192.168.1.51 felix1-priv
192.168.10.53 felix1-vip
#felix2
192.168.10.52 felix2
192.168.1.52 felix2-priv
192.168.10.54 felix2-vip
#scan-ip
192.168.10.254 felix-scan
[root@felix1 ~]#
5.1 各節點正常使用時，各節點主機IP信息
---節點1的IP信息：
[root@felix1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:797 errors:0 dropped:0 overruns:0 frame:0
TXpackets:553 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:149395 (145.8 KiB) TX bytes:94913(92.6 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:59469 errors:0 dropped:0 overruns:0 frame:0
TXpackets:60011 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:41132611 (39.2 MiB) TXbytes:43517816 (41.5 MiB)
eth1:1 Linkencap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:13151 errors:0 dropped:0 overruns:0 frame:0
TXpackets:13151 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:6366619 (6.0 MiB) TX bytes:6366619(6.0 MiB)
[root@felix1 ~]#
--節點2的IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:1258 errors:0 dropped:0 overruns:0 frame:0
TXpackets:306 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:213816 (208.8 KiB) TX bytes:55999(54.6 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:60819 errors:0 dropped:0 overruns:0 frame:0
TXpackets:59361 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:43726317 (41.7 MiB) TXbytes:41286715 (39.3 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:13986 errors:0 dropped:0 overruns:0 frame:0
TX packets:13986 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:8503012 (8.1 MiB) TX bytes:8503012(8.1 MiB)
[root@felix2 ~]#
5.2 強制關閉節點1（shutdown abort），模擬節點1宕機
[oracle@felix1 ~]$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Dec8 00:21:43 2015
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters,Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
SQL> shutdown abort;
ORACLE instance shut down.
SQL>
5.3 查看節點1宕機後之後連接會話信息
update語句
對於update語句連接的會話，當故障發生時，不會產生故障轉移。
SCOTT >
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >UPDATE taf_test SET COMM=500 where MGR=7698;
5 rows updated.
SCOTT >SCOTT >select instance_name fromv$instance;
select instance_name from v$instance
*
ERROR at line 1:
ORA-25402: transaction must roll back
SCOTT >
select語句：
對於select語句連接的會話，當故障發生時，會發生故障轉移。
--select語句 1
SCOTT > select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SELECT * FROM taf_test WHERE DEPTNO=30;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7654MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7900JAMES CLERK 76981981:12:0300:00:00 950 30
6 rows selected.
--'宕機後查詢實例信息'
SCOTT >SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >
-- select語句 2
SCOTT > select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SELECT * FROM taf_test WHERE SAL=1500;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
SCOTT >
--'宕機後查詢實例信息'
SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >SCOTT >
--select語句 3
SCOTT >
INSTANCE_NAME
--------------------------------
felix1 ---會話剛連接時連接到的實例
SCOTT >SELECT * FROM taf_test WHERE SAL=800;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7369SMITH CLERK 79021980:12:1700:00:00 800 20
SCOTT >
--'宕機後查詢實例信息'
SCOTT >select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix2 ---public網絡斷開後連接到的實例
SCOTT >SCOTT >
5.4 查看節點1宕機後集羣服務信息
查看此時集羣狀態：
[root@felix2 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.FRA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.LISTENER.lsnr
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.OCRVOTING.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.asm
ONLINE ONLINE felix1 Started
ONLINE ONLINE felix2 Started
ora.gsd
OFFLINE OFFLINE felix1
OFFLINE OFFLINE felix2
ora.net1.network
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.ons
ONLINE ONLINE felix1
ONLINE ONLINE felix2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE felix2
ora.cvu
1 ONLINE ONLINE felix2
ora.felix.db
1 OFFLINE OFFLINE InstanceShutdown
2 ONLINE ONLINE felix2 Open
ora.felix.server_taf.svc
1 ONLINE OFFLINE
2 ONLINE ONLINE felix2
ora.felix1.vip
1 ONLINE ONLINE felix1
ora.felix2.vip
1 ONLINE ONLINE felix2
ora.oc4j
1 ONLINE ONLINE felix1
ora.scan1.vip
1 ONLINE ONLINE felix2
[root@felix2 ~]#
可以看出servertaf服務只是OFFLINE，但是並未顯示同測試1結果的failover現象。
5.5 查看節點1宕機後各節點主機的IP信息：
查看此時各節點IP信息：
[oracle@felix1 ~]$ ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:2352 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1044 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:324678 (317.0 KiB) TX bytes:191394(186.9 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:77405 errors:0 dropped:0 overruns:0 frame:0
TXpackets:75648 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:51046650 (48.6 MiB) TXbytes:49481430 (47.1 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:16642 errors:0 dropped:0 overruns:0 frame:0
TXpackets:16642 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:7794168 (7.4 MiB) TX bytes:7794168(7.4 MiB)
[oracle@felix1 ~]$
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:3115 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1337 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:431392 (421.2 KiB) TX bytes:221128(215.9 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:77506 errors:0 dropped:0 overruns:0 frame:0
TXpackets:78085 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:50089398 (47.7 MiB) TXbytes:51824262 (49.4 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Linkencap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:25415 errors:0 dropped:0 overruns:0 frame:0
TXpackets:25415 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:13167923 (12.5 MiB) TXbytes:13167923 (12.5 MiB)
[root@felix2 ~]#
從以上測試可以看出，當節點1宕機後，之前連接到節點1的會話（SELECT）故障轉移到了節點2上，但是節點1的VIP(192.168.10.53 felix1-vip)並未漂移到節點2上。
二 . 測試兩個節點分別使用PREFERRED和AVAILABLE的service
2. 1 創建新的TAF服務 SERVERTAF2
[oracle@felix1 ~]$ srvctl add service -d felix -sserver_taf2 -r "felix1,felix2" -P BASIC
[oracle@felix1 ~]$ srvctl start service -d felix-s server_taf2
[oracle@felix1 ~]$ srvctlmodify service -d felix -s server_taf2-n -i felix1 -a felix2
[oracle@felix1 ~]$ srvctl config service -d felix -s server_taf2
Service name: server_taf2
Service is enabled
Server pool: felix_server_taf2
Cardinality: 1
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: false
Failover type: NONE
Failover method: NONE
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: felix1
Available instances: felix2
[oracle@felix1 ~]$
[oracle@felix1 admin]$ vi tnsnames.ora
# tnsnames.ora Network Configuration File:/u01/app/oracle/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
FELIX =
(DESCRIPTION =
(ADDRESS= (PROTOCOL = TCP)(HOST = felix-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = felix)
)
)
SERVERTAF2 =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.10.254)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = server_taf2)
)
)
"tnsnames.ora" 32L, 758C written
[oracle@felix1 admin]$
[oracle@felix2 admin]$ cat tnsnames.ora
# tnsnames.ora Network Configuration File:/u01/app/oracle/11.2.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
FELIX =
(DESCRIPTION =
(ADDRESS= (PROTOCOL = TCP)(HOST = felix-scan)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = felix)
)
)
SERVERTAF2 =
(DESCRIPTION =
(LOAD_BALANCE = yes)
(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.10.254)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = server_taf2)
)
)
[oracle@felix2 admin]$
SYS >show parameter service_name
NAME TYPE VALUE
---------------------------------------------------------- ------------------------------
service_names string felix_taf, server_taf
SYS >alter system set service_names='felix_taf,server_taf,server_taf2';
System altered.
SYS >show parameter service_name
NAME TYPE VALUE
---------------------------------------------------------- ------------------------------
service_names string felix_taf, server_taf,server_t
af2
SYS >
[oracle@felix1 admin]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.4.0 - Productionon 09-DEC-2015 23:51:55
Copyright (c) 1991, 2013, Oracle. All rights reserved.
Connecting to(ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version11.2.0.4.0 - Production
Start Date 09-DEC-2015 22:14:47
Uptime 0 days 1 hr. 37 min. 8 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/grid/11.2.0/network/admin/listener.ora
Listener Log File /u01/grid/diag/tnslsnr/felix1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.10.51)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.10.53)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance"+ASM1", status READY, has 1 handler(s) for this service...
Service "felix" has 1 instance(s).
Instance"felix1", status READY, has 1 handler(s) for this service...
Service "felixXDB" has 1 instance(s).
Instance"felix1", status READY, has 1 handler(s) for this service...
Service "felix_taf" has 1 instance(s).
Instance"felix1", status READY, has 1 handler(s) for this service...
Service "server_taf" has 1 instance(s).
Instance"felix1", status READY, has 1 handler(s) for this service...
Service "server_taf2" has 1 instance(s).
Instance"felix1", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@felix1 admin]$
2.2 連接若干會話
會話1：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
insert into taf_test select * from taf_test;
會話2：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
select * from taf_test where MGR=7839 FOR UPDATE;
會話3：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
UPDATE taf_test SET COMM=500 where MGR=7698;
會話4：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
insert into taf_test select * from taf_test;
會話5：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=30;
會話6：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=10;
會話7：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=1500;
會話8：
sqlplus scott/oracle@servertaf2
select instance_name from v$instance;
SELECT * FROM taf_test WHERE SAL=800;
2.3 查看故障前各主機IP信息
節點1主機IP信息：
[root@felix1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:12334 errors:0 dropped:0 overruns:0 frame:0
TXpackets:2256 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:1709959 (1.6 MiB) TX bytes:397060(387.7 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:362354 errors:0 dropped:0 overruns:0 frame:0
TXpackets:317019 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:225392102 (214.9 MiB) TXbytes:176257622 (168.0 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:109574 errors:0 dropped:0 overruns:0 frame:0
TXpackets:109574 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:38990474 (37.1 MiB) TXbytes:38990474 (37.1 MiB)
[root@felix1 ~]#
節點2主機IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:9191 errors:0 dropped:0 overruns:0 frame:0
TXpackets:6516 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:1220035 (1.1 MiB) TX bytes:1032175(1007.9 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:322182 errors:0 dropped:0 overruns:0 frame:0
TXpackets:360040 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:177507704 (169.2 MiB) TXbytes:226075671 (215.6 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:75326 errors:0 dropped:0 overruns:0 frame:0
TXpackets:75326 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:45743962 (43.6 MiB) TXbytes:45743962 (43.6 MiB)
[root@felix2 ~]#
2.4 查看節點1宕機後連接會話信息
各回話信息：
會話1：
1）對insert語句，未發生故障轉移。
SCOTT > select instance_name from v$instance;
SELECT * FROM taf_test WHERE DEPTNO=30;
INSTANCE_NAME
--------------------------------
felix1
SCOTT >insert into taf_test select * fromtaf_test;
14 rows created.
SCOTT >select instance_namefrom v$instance;
select instance_name fromv$instance
*
ERROR at line 1:
ORA-03113: end-of-file oncommunication channel
Process ID: 11585
Session ID: 43 Serial number:123
ERROR:
ORA-03114: not connected toORACLE
SCOTT >
會話2：
1)此時對於select語句，該會話也未發生故障轉移。
SCOTT > select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix1
SCOTT >SELECT * FROM taf_test WHERE DEPTNO=30;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7654 MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7900JAMES CLERK 76981981:12:0300:00:00 950 30
6 rows selected.
SCOTT >select instance_namefrom v$instance;
select instance_name fromv$instance
*
ERROR at line 1:
ORA-03113: end-of-file oncommunication channel
Process ID: 11587
Session ID: 78 Serial number:115
ERROR:
ORA-03114: not connected toORACLE
SCOTT >
會話3：
SCOTT > select instance_name from v$instance;
INSTANCE_NAME
--------------------------------
felix1
SCOTT >SELECT * FROM taf_test WHERE SAL=1500;
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
SCOTT >select instance_namefrom v$instance;
select instance_name fromv$instance
*
ERROR at line 1:
ORA-03113: end-of-file oncommunication channel
Process ID: 11606
Session ID: 80 Serial number: 61
ERROR:
ORA-03114: not connected toORACLE
SCOTT >
2.5 節點1宕機後集羣信息
[root@felix2 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.FRA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.LISTENER.lsnr
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.OCRVOTING.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.asm
ONLINE ONLINE felix1 Started
ONLINE ONLINE felix2 Started
ora.gsd
OFFLINE OFFLINE felix1
OFFLINE OFFLINE felix2
ora.net1.network
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.ons
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.registry.acfs
ONLINE ONLINE felix1
ONLINE ONLINE felix2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE felix1
ora.cvu
1 ONLINE ONLINE felix2
ora.felix.db
1 ONLINE ONLINE felix2 Open
2 OFFLINE OFFLINE InstanceShutdown
ora.felix.felix_taf.svc
1 ONLINE ONLINE felix2
2 ONLINE OFFLINE
ora.felix.server_taf.svc
1 ONLINE OFFLINE
2 ONLINE ONLINE felix2
ora.felix.server_taf2.svc
1 ONLINE ONLINE felix2
ora.felix1.vip
1 ONLINE ONLINE felix1
ora.felix2.vip
1 ONLINE ONLINE felix2
ora.oc4j
1 ONLINE ONLINE felix1
ora.scan1.vip
1 ONLINE ONLINE felix1
[root@felix2 ~]#
2.6 節點1宕機後各主機IP信息：
節點1主機IP信息：
[root@felix1 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:13609 errors:0 dropped:0 overruns:0 frame:0
TXpackets:2508 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:1880760 (1.7 MiB) TX bytes:443499(433.1 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:376330 errors:0 dropped:0 overruns:0 frame:0
TXpackets:327765 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:234527568 (223.6 MiB) TXbytes:181535431 (173.1 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inetaddr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:111294 errors:0 dropped:0 overruns:0 frame:0
TXpackets:111294 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:40338783 (38.4 MiB) TXbytes:40338783 (38.4 MiB)
[root@felix1 ~]#
節點2主機IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:10176 errors:0 dropped:0 overruns:0 frame:0
TXpackets:7267 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:1344890 (1.2 MiB) TX bytes:1157602(1.1 MiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:333365 errors:0 dropped:0 overruns:0 frame:0
TXpackets:373430 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:182725657 (174.2 MiB) TXbytes:234748837 (223.8 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:80730 errors:0 dropped:0 overruns:0 frame:0
TXpackets:80730 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:50339855 (48.0 MiB) TXbytes:50339855 (48.0 MiB)
[root@felix2 ~]#
總結：當節點1爲Preferredinstances並且節點2爲Availableinstances的時候，當節點1宕機（shutdownabort）故障發生後，不會發生故障轉移（無論是DML還是DQL語句），並且VIP不做漂移動作。
2.7 節點2宕機後連接會話信息
（開了八個同樣的查詢會話）
會話1：
select查詢語句的會話未發生故障轉移。
SCOTT >
INSTANCE_NAME
--------------------------------
felix2
SCOTT >
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7654MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7900JAMES CLERK 76981981:12:0300:00:00 950 30
6 rows selected.
SCOTT >SELECT * FROM taf_test WHERE DEPTNO=30;
SELECT * FROM taf_test WHERE DEPTNO=30
*
ERROR at line 1:
ORA-03113: end-of-file oncommunication channel
Process ID: 4242
Session ID: 61 Serial number: 5
ERROR:
ORA-03114: not connected toORACLE
SCOTT >
會話2：
select查詢語句的會話未發生故障轉移。
SCOTT >
INSTANCE_NAME
--------------------------------
felix2
SCOTT >
EMPNOENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- -------------------- ---------------------------- ------------------ ---------- ---------- ----------
7499ALLEN SALESMAN 7698 1981:02:2000:00:00 1600 300 30
7521WARD SALESMAN 7698 1981:02:2200:00:00 1250 500 30
7654MARTIN SALESMAN 7698 1981:09:2800:00:00 1250 1400 30
7698BLAKE MANAGER 7839 1981:05:0100:00:00 2850 30
7844TURNER SALESMAN 7698 1981:09:0800:00:00 1500 0 30
7900JAMES CLERK 76981981:12:0300:00:00 950 30
6 rows selected.
SCOTT >SELECT * FROM taf_test WHERE DEPTNO=30;
SELECT * FROM taf_test WHERE DEPTNO=30
*
ERROR at line 1:
ORA-03113: end-of-file oncommunication channel
Process ID: 4246
Session ID: 56 Serial number: 43
ERROR:
ORA-03114: not connected toORACLE
SCOTT >
2.8 節點2宕機後集羣信息
[root@felix1 ~]# crsctl stat res -t
--------------------------------------------------------------------------------
NAME TARGET STATE SERVER STATE_DETAILS
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.FRA.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.LISTENER.lsnr
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.OCRVOTING.dg
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.asm
ONLINE ONLINE felix1 Started
ONLINE ONLINE felix2 Started
ora.gsd
OFFLINE OFFLINE felix1
OFFLINE OFFLINE felix2
ora.net1.network
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.ons
ONLINE ONLINE felix1
ONLINE ONLINE felix2
ora.registry.acfs
ONLINE ONLINE felix1
ONLINE ONLINE felix2
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.LISTENER_SCAN1.lsnr
1 ONLINE ONLINE felix1
ora.cvu
1 ONLINE ONLINE felix1
ora.felix.db
1 OFFLINE OFFLINE InstanceShutdown
2 ONLINE ONLINE felix1 Open
ora.felix.felix_taf.svc
1 ONLINE OFFLINE
2 ONLINE ONLINE felix1
ora.felix.server_taf.svc
1 ONLINE ONLINE felix1
2 ONLINE OFFLINE
ora.felix.server_taf2.svc
1 ONLINE ONLINE felix1
ora.felix1.vip
1 ONLINE ONLINE felix1
ora.felix2.vip
1 ONLINE ONLINE felix2
ora.oc4j
1 ONLINE ONLINE felix1
ora.scan1.vip
1 ONLINE ONLINE felix1
[root@felix1 ~]#
此時可以看出，節點2集羣層資源全部斷開（除了VIP資源）。
2.9 節點2宕機後各主機IP信息
節點1主機IP信息：
[root@felix1 ~]# ifconfig
eth0 Linkencap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.51 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:4170 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1593 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:508166 (496.2 KiB) TX bytes:252861(246.9 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.254 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth0:3 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.53 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.51 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:52967 errors:0 dropped:0 overruns:0 frame:0
TXpackets:66605 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:27484593 (26.2 MiB) TXbytes:48367458 (46.1 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.142.56 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:19045 errors:0 dropped:0 overruns:0 frame:0
TXpackets:19045 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:10148885 (9.6 MiB) TXbytes:10148885 (9.6 MiB)
[root@felix1 ~]#
節點2主機IP信息：
[root@felix2 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.52 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe7b:da59/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:3459 errors:0 dropped:0 overruns:0 frame:0
TXpackets:1449 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:415948 (406.1 KiB) TX bytes:238660(233.0 KiB)
eth0:1 Link encap:Ethernet HWaddr08:00:27:7B:DA:59
inet addr:192.168.10.54 Bcast:192.168.10.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:192.168.1.52 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fedf:c4f4/64 Scope:Link
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:66276 errors:0 dropped:0 overruns:0 frame:0
TXpackets:50944 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:47968867 (45.7 MiB) TXbytes:26668108 (25.4 MiB)
eth1:1 Link encap:Ethernet HWaddr08:00:27:DF:C4:F4
inet addr:169.254.138.193 Bcast:169.254.255.255 Mask:255.255.0.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UPLOOPBACK RUNNING MTU:16436 Metric:1
RXpackets:12860 errors:0 dropped:0 overruns:0 frame:0
TXpackets:12860 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RXbytes:8775183 (8.3 MiB) TX bytes:8775183(8.3 MiB)
[root@felix2 ~]#
總結：當節點1爲Preferredinstances並且節點2爲Availableinstances的時候，當節點2宕機（shutdownabort）故障發生後，不會發生故障轉移（無論是DML還是DQL語句），並且VIP不做漂移動作，但是此情況中節點2集羣層資源全部斷開（VIP除外）(此情況可與2.5的集羣信息做對比)。