在生產庫停止DataGuard操作如下。
SQL> show parameter log_archive_dest_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2 string service="orcldg", SYNC AFFIRM
delay=0 optional compression=d
isable max_failure=0 max_conne
ctions=1 reopen=300 db_unique_
name="orcldg" net_timeout=10,
valid_for=(online_logfile,all_
roles)
log_archive_dest_20 string
log_archive_dest_21 string
log_archive_dest_22 string
log_archive_dest_23 string
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_24 string
log_archive_dest_25 string
log_archive_dest_26 string
log_archive_dest_27 string
log_archive_dest_28 string
log_archive_dest_29 string
SQL> show parameter log_archive_dest_state_2
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_state_2 string ENABLE
log_archive_dest_state_20 string enable
log_archive_dest_state_21 string enable
log_archive_dest_state_22 string enable
log_archive_dest_state_23 string enable
log_archive_dest_state_24 string enable
log_archive_dest_state_25 string enable
log_archive_dest_state_26 string enable
log_archive_dest_state_27 string enable
log_archive_dest_state_28 string enable
log_archive_dest_state_29 string enable
以下三種方式效果是一樣的。
SQL> alter system set log_archive_dest_state_2=defer;
System altered.
SQL> alter system set log_archive_dest_state_2=defer scope=both;
System altered.
SQL> alter system set log_archive_dest_state_2=defer scope=both sid='*';
System altered.
發現有報錯了。
DGMGRL> show configuration;
Configuration - dg_config
Protection Mode: MaxAvailability
Members:
orcl - Primary database
Error: ORA-16810: multiple errors or warnings detected for the database
orcldg - Physical standby database
Warning: ORA-16857: standby disconnected from redo source for longer than specified threshold
Fast-Start Failover: DISABLED
Configuration Status:
ERROR (status updated 45 seconds ago)
DGMGRL>
在生產庫啓動DataGuard如下：
重新修改數據庫參數爲enable
SQL> alter system set log_archive_dest_state_2=enable;
System altered.
狀態正常了。
DGMGRL> show configuration;
Configuration - dg_config
Protection Mode: MaxAvailability
Members:
orcl - Primary database
orcldg - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS (status updated 7 seconds ago)
日常運維工作，這些過程要熟悉，熟練，懂原理，多動手。每天進步一點點。