Oracle 數據字典 說明

一.官網上有關數據字典的信息

 

關於Oracle 的數據字典,官網的文檔上有詳細的說明,地址:

       Data Dictionary and Dynamic Performance Views

      http://download.oracle.com/docs/cd/E11882_01/server.112/e10713/datadict.htm#CNCPT2140

 

Overview of the Data Dictionary

An important part of an Oracle database is its data dictionary, which is a read-only set of tables that provides administrative metadata about the database. A data dictionary contains information such as the following:

·         The definitions of every schema object in the database, including default values for columns and integrity constraint information

·         The amount of space allocated for and currently used by the schema objects

·         The names of Oracle Database users, privileges and roles granted to users, and auditing information related to users (see "User Accounts")

The data dictionary is a central part of data management for every Oracle database. For example, the database performs the following actions:

·         Accesses the data dictionary to find information about users, schema objects, and storage structures

·         Modifies the data dictionary every time that a DDL statement is issued (see "Data Definition Language (DDL) Statements")

Because Oracle Database stores data dictionary data in tables, just like other data, users can query the data with SQL. For example, users can run SELECT statements to determine their privileges, which tables exist in their schema, which columns are in these tables, whether indexes are built on these columns, and so on.

Contents of the Data Dictionary

The data dictionary consists of the following types of objects:

·         Base tables

These underlying tables store information about the database. Only Oracle Database should write to and read these tables. Users rarely access the base tables directly because they are normalized and most data is stored in a cryptic format.

·         Views

These views decode the base table data into useful information, such as user or table names, using joins and WHERE clauses to simplify the information. These views contain the names and description of all objects in the data dictionary. Some views are accessible to all database users, whereas others are intended for administrators only.

Typically, data dictionary views are grouped in sets. In many cases, a set consists of three views containing similar information and distinguished from each other by their prefixes, as shown in Table 6-1. By querying the appropriate views, you can access only the information relevant for you.

Data Dictionary View Sets

Prefix

User Access

Contents

Notes

DBA_

Database administrators

All objects

Some DBA_ views have additional columns containing information useful to the administrator.

ALL_

All users

Objects to which user has privileges

Includes objects owned by user. These views obey the current set of enabled roles.

USER_

All users

Objects owned by user

Views with the prefix USER_ usually exclude the column OWNER. This column is implied in the USER_ views to be the user issuing the query.

 

Not all views sets have three members. For example, the data dictionary contains a DBA_LOCK view but no ALL_LOCK view.

The system-supplied DICTIONARY view contains the names and abbreviated descriptions of all data dictionary views. The following query of this view includes partial sample output:

SQL> SELECT * FROM DICTIONARY ORDER BY TABLE_NAME;

TABLE_NAME                     COMMENTS

------------------------------ ----------------------------------------

ALL_ALL_TABLES                 Description of all object and relational

                               tables accessible to the user

 ALL_APPLY                      Details about each apply process that

                               dequeues from the queue visible to the

                               current user

 

Views with the Prefix DBA_

Views with the prefix DBA_ show all relevant information in the entire database. DBA_ views are intended only for administrators.

For example, the following query shows information about all objects in the database:

SELECT OWNER, OBJECT_NAME, OBJECT_TYPE FROM   DBA_OBJECTS ORDER BY OWNER, OBJECT_NAME;

Views with the Prefix ALL_

Views with the prefix ALL_ refer to the user's overall perspective of the database. These views return information about schema objects to which the user has access through public or explicit grants of privileges and roles, in addition to schema objects that the user owns.

For example, the following query returns information about all the objects to which you have access:

SELECT OWNER, OBJECT_NAME, OBJECT_TYPE FROM   ALL_OBJECTS ORDER BY OWNER, OBJECT_NAME;

Because the ALL_ views obey the current set of enabled roles, query results depend on which roles are enabled, as shown in the following example:

SQL> SET ROLE ALL;
Role set.
SQL> SELECT COUNT(*) FROM ALL_OBJECTS;
COUNT(*)
----------
68295
SQL> SET ROLE NONE;
Role set.
SQL> SELECT COUNT(*) FROM ALL_OBJECTS;
COUNT(*)
----------
53771

Application developers should be cognizant of the effect of roles when using ALL_ views in a stored procedure, where roles are not enabled by default.

 

Views with the Prefix USER_

The views most likely to be of interest to typical database users are those with the prefix USER_. These views:

·         Refer to the user's private environment in the database, including metadata about schema objects created by the user, grants made by the user, and so on

·         Display only rows pertinent to the user, returning a subset of the information in the ALL_ views

·         Has columns identical to the other views, except that the column OWNER is implied

·         Can have abbreviated PUBLICsynonyms for convenience

For example, the following query returns all the objects contained in your schema:

SELECT OBJECT_NAME, OBJECT_TYPE FROM   USER_OBJECTS ORDER BY OBJECT_NAME;

The DUAL Table

DUAL is a small table in the data dictionary that Oracle Database and user-written programs can reference to guarantee a known result. The dual table is useful when a value must be returned only once, for example, the current date and time. All database users have access to DUAL.

The DUAL table has one column called DUMMY and one row containing the value X. The following example queries DUAL to perform an arithmetical operation:

SQL> SELECT ((3*4)+5)/3 FROM DUAL;

((3*4)+5)/3

-----------

 5.66666667

 

Oracle Dual 表詳解

http://blog.csdn.net/tianlesoftware/archive/2009/11/04/4764326.aspx

 

 

二.數據字典

 

Oracle數據字典是有表和視圖組成,存儲有關數據庫結構信息的一些數據庫對象。數據庫字典描述了實際數據是如何組織的。比如一個表的創建者信息,創建時間信息,所屬表空間信息,用戶訪問權限信息等。對它們可以象處理其他數據庫表或視圖一樣進行查詢,但不能進行任何修改。它們存放在SYSTEM表空間中,當用戶在對數據庫中的數據進行操作時遇到困難就可以訪問數據字典來查看詳細的信息。用戶可以用SQL語句訪問數據庫數據字典。

 

Oracle數據庫字典通常是在創建和安裝數據庫時被創建的,Oracle數據字典是Oracle數據庫系統工作的基礎,沒有數據字典的支持,Oracle數據庫系統就不能進行任何工作。數據字典中的表是不能直接被訪問的,但是可以訪問數據字典中的視圖。

 

 

2.1 數據字典內容包括:

1,數據庫中所有模式對象的信息,如表、視圖、簇、及索引等。

2,分配多少空間,當前使用了多少空間等。

3,列的缺省值。

4,約束信息的完整性。

5,Oracle用戶的名字。

6,用戶及角色被授予的權限。

7,用戶訪問或使用的審計信息。

8,其它產生的數據庫信息。

 

2.2  數據字典分爲數據字典表數據字典視圖

2.2. 1 數據字典表

       數據字典表裏的數據是Oracle系統存放的系統數據,而普通表存放的是用戶的數據。爲了方便的區別這些表,這些表的名字都是用"$"結尾,這些表屬於SYS用戶。

       數據字典表由$ORACLE_HOME/rdbms/admin/sql.bsq 腳本創建, 這個腳本里又調用了其他的腳本來創建這些數據字典表。 在那些創建腳本里有基表的創建SQL。 感興趣的自己打開看看。

 

       Oracle 對數據字典表的說明:

       These underlying tables store information about the database. Only Oracle Database should write to and read these tables. Users rarely access the base tables directly because they are normalized and most data is stored in a cryptic format.

 

       這些數據字典表,只有Oracle 能夠進行讀寫。

 

       SYS用戶下的這些數據字典表,存放在system 表空間下面,表名都用"$"結尾,爲了便於用戶對數據字典表的查詢, Oracle對這些數據字典都分別建立了用戶視圖,這樣即容易記住,還隱藏了數據字典表表之間的關係,Oracle針對這些對象的範圍,分別把視圖命名爲DBA_XXXX, ALL_XXXX和USER_XXXX。

      

       關於這3類視圖,下面有介紹。

 

       Oracle爲了便於彙總數據字典表的信息,把所有的數據字典都彙集到dictionary表裏了,通過對這個表的查詢,我們可以很方便的找到數據庫提供的數據字典。

 

2.2.2  數據字典視圖

       動態性能視圖由腳本:$ORACLE_HOME/rdbms/admin/catalog.sql 創建, 該腳本也只是一個總的調用,在該腳本里由調用了其他的腳本。 感興趣的可以自己打開看一下,在那些腳本里,可以看到視圖的創建SQL.

       這是因爲這個腳本會創建動態視圖,所以在做DB 升級的時候,也需要執行這個腳本,重新創建視圖。

 

       數據字典視圖分2類:靜態數據字典(靜態性能視圖) 和 動態數據字典(動態性能視圖)

 

2.2.2.1 靜態數據字典(靜態性能視圖)

       靜態數據字典中的視圖分爲三類,它們分別由三個前綴夠成:user_*、 all_*、 dba_*。

user_*該視圖存儲了關於當前用戶所擁有的對象的信息。(即所有在該用戶模式下的對象)

all_*該試圖存儲了當前用戶能夠訪問的對象的信息, 而不是當前用戶擁有的對象。(與user_*相比,all_* 並不需要擁有該對象,只需要具有訪問該對象的權限即可)

dba_*該視圖存儲了數據庫中所有對象的信息。(前提是當前用戶具有訪問這些數據庫的權限,一般來說必須具有管理員權限)

 

       這些視圖由SYS用戶創建的,所以使用需要加上SYS,爲了方便, Oracle爲每個數據字典表的視圖頭建立了同名字的公共同義詞(public synonyms). 這樣簡單的處理就省去了寫sys.的麻煩。

 

 

示例:

1user_tables主要描述當前用戶擁有的所有表的信息,主要包括表名、表空間名、簇名等。通過此視圖可以清楚瞭解當前用戶可以操作的表有哪些。

SQL>select * from user_tables;

       2user_indexes 查詢該用戶擁有哪些索引。

SQL>select index_name from user_indexes;

       3user_views 查詢該用戶擁有哪些視圖

SQL>select view_name from user_views;

       4user_objects查詢該用戶擁有哪些數據庫對象,對象包括表、視圖、存儲過程、觸發器、包、索引、序列、JAVA文件等。

SQL>select object_name from user_objects;

       5user_users主要描述當前用戶的信息,主要包括當前用戶名、帳戶id、帳戶狀態、表空間名、創建時間等。

SQL>select * from user_users;

       6all_objects查詢某一用戶下的所有表、過程、函數等信息。

SQL>select owner , object_name ,object_type from all_objects

 

 

2.2.2.2  動態數據字典(動態性能視圖)

       除了靜態數據字典中三類視圖,其他的字典視圖中主要的是V$視圖,之所以這樣叫是因爲他們都是以V$或GV$開頭的。這些視圖會不斷的進行更新,從而提供了關於內存和磁盤的運行情況,所以我們只能對其進行只讀訪問而不能修改它們。

 

Throughout its operation, Oracle Database maintains a set of virtual tables that record current database activity. These views are calleddynamic performance views because they are continuously updated while a database is open and in use. The views, also sometimes called V$ views

 

V$視圖是基於X$虛擬視圖的。V$視圖是SYS用戶所擁有的,在缺省狀況下,只有SYS用戶和擁有DBA系統權限的用戶可以看到所有的視圖,沒有DBA權限的用戶可以看到USER_和ALL_視圖,但不能看到DBA_視圖。與DBA_,ALL,和USER_視圖中面向數據庫信息相反,這些視圖可視的給出了面向實例的信息。      

       動態性能表用於記錄當前數據庫的活動,只存於數據庫運行期間,實際的信息都取自內存和控制文件。 DBA可以使用動態視圖來監視和調節數據。

 

關於動態性能視圖,參考:

       Oracle 動態性能視圖

       http://blog.csdn.net/tianlesoftware/archive/2010/09/04/5863191.aspx

 

 

2.3 視圖家族

 

在Oracle的絕大多數數據字典視圖中都有象DBA_TABLES,ALL_TABLES和USER_TABLES這樣的視圖家族。Oracle中有超過100個視圖家族,下表列出了最重要和最常用的視圖家族,需要注意的是每個視圖家族都有一個DBA_,一個ALL_ 和一個USER_視圖。

 

視圖家族

描述

COL_PRIVS

包含了表的列權限,包括授予者、被授予者和權限

EXTENTS

數據範圍信息,比如數據文件,數據段名(segment_name)和大小

INDEXES

索引信息,比如類型、唯一性和被涉及的表

IND_COLUMNS

索引列信息,比如索引上的列的排序方式

OBJECTS

對象信息,比如狀態和DDL time

ROLE_PRIVS

角色權限,比如GRANT和ADMIN選項

SEGMENTS

表和索引的數據段信息,比如tablespace和storage

SEQUECNCES

序列信息,比如序列的cache、cycle和ast_number

SOURCE

除觸發器之外的所有內置過程、函數、包的源代碼

SYNONYMS

別名信息,比如引用的對象和數據庫鏈接db_link

SYS_PRIVS

系統權限,比如grantee、privilege、admin選項

TAB_COLUMNS

表和視圖的列信息,包括列的數據類型

TAB_PRIVS

表權限,比如授予者、被授予者和權限

TABLES

表信息,比如表空間(tablespace),存儲參數(storage parms)和數據行的數量

TRIGGERS

觸發器信息,比如類型、事件、觸發體(trigger body)

USERS

用戶信息,比如臨時的和缺省的表空間

VIEWS

視圖信息,包括視圖定義

 

在Oracle中還有一些不常用的數據字典表,但這些表不是真正的字典家族,他們都是一些重要的單一的視圖。這些視圖見下表:

 

視圖名稱

描述

USER_COL_PRIVS_MADE

用戶授予他人的列權限

USER_COL_PRIVS_RECD

用戶獲得的列權限

USER_TAB_PRIVS_MADE

用戶授予他人的表權限

USER_TAB_PRIVS_RECD

用戶獲得的表權限

 

 

2.4 查看數據字典

       我們通過dictionary 字典來查看所有的視圖和其描述。 該表只有2個字段:表名和描述

      

SQL> desc dictionary

 名稱                                      是否爲空? 類型

 ----------------------------------------- -------- -------------------------

 TABLE_NAME                                         VARCHAR2(30)

 COMMENTS                                           VARCHAR2(4000)

 

我們可以用以下SQL來查看所有數據字典對象:

SQL>select * from dictionary;

 

Oracle 11g中有2592個對象。

SQL> select count(*) from dictionary;

COUNT(*)

----------

2592

 

部分數據如下表:

視圖名

描述

ALL_CATALOG

All tables, views, synonyms, sequences accessible to the user

ALL_COL_COMMENTS

Comments on columns of accessible tables and views

ALL_COL_GRANTS_MADE

Grants on columns for which the user is owner or grantor

ALL_COL_GRANTS_RECD

Grants on columns for which the user or PUBLIC is the grantee

ALL_COL_PRIVS

Grants on columns for which the user is the grantor, grantee, owner, or an enabled role or PUBLIC is the grantee

ALL_COL_PRIVS_MADE

Grants on columns for which the user is owner or grantor

ALL_COL_PRIVS_RECD

Grants on columns for which the user, PUBLIC or enabled role is the grantee

ALL_CONSTRAINTS

Constraint definitions on accessible tables

ALL_CONS_COLUMNS

Information about accessible columns in constraint definitions

ALL_DB_LINKS

Database links accessible to the user

ALL_DEF_AUDIT_OPTS

Auditing options for newly created objects

ALL_DEPENDENCIES

Dependencies to and from objects accessible to the user

ALL_ERRORS

Current errors on stored objects that user is allowed to create

ALL_INDEXES

Descriptions of indexes on tables accessible to the user

ALL_IND_COLUMNS

COLUMNs comprising INDEXes on accessible TABLES

ALL_OBJECTS

Objects accessible to the user

ALL_REFRESH

All the refresh groups that the user can touch

ALL_REFRESH_CHILDREN

All the objects in refresh groups, where the user can touch the group

ALL_SEQUENCES

Description of SEQUENCEs accessible to the user

ALL_SNAPSHOTS

Snapshots the user can look at

ALL_SOURCE

Current source on stored objects that user is allowed to create

ALL_SYNONYMS

All synonyms accessible to the user

ALL_TABLES

Description of tables accessible to the user

ALL_TAB_COLUMNS

Columns of all tables, views and clusters

ALL_TAB_COMMENTS

Comments on tables and views accessible to the user

ALL_TAB_GRANTS_MADE

User's grants and grants on user's objects

ALL_TAB_GRANTS_RECD

Grants on objects for which the user or PUBLIC is the grantee

ALL_TAB_PRIVS

Grants on objects for which the user is the grantor, grantee, owner, or an enabled role or PUBLIC is the grantee

ALL_TAB_PRIVS_MADE

User's grants and grants on user's objects

ALL_TAB_PRIVS_RECD

Grants on objects for which the user, PUBLIC or enabled role is the grantee

ALL_TRIGGERS

Triggers accessible to the current user

ALL_TRIGGER_COLS

Column usage in user's triggers or in triggers on user's tables

ALL_USERS

Information about all users of the database

ALL_VIEWS

Text of views accessible to the user

USER_AUDIT_CONNECT

Audit trail entries for user logons/logoffs

USER_AUDIT_OBJECT

Audit trail records for statements concerning objects, specifically: table, cluster, view, index, sequence, [public] database link, [public] synonym, procedure, trigger, rollback segment, tablespace, role, user

USER_AUDIT_SESSION

 

USER_AUDIT_STATEMENT

Audit trail records concerning grant, revoke, audit, noaudit and alter system

USER_AUDIT_TRAIL

Audit trail entries relevant to the user

USER_CATALOG

Tables, Views, Synonyms and Sequences owned by the user

USER_CLUSTERS

Descriptions of user's own clusters

USER_CLU_COLUMNS

Mapping of table columns to cluster columns

USER_COL_COMMENTS

Comments on columns of user's tables and views

USER_COL_GRANTS

Grants on columns for which the user is the owner, grantor or grantee

USER_COL_GRANTS_MADE

All grants on columns of objects owned by the user

USER_COL_GRANTS_RECD

Grants on columns for which the user is the grantee

USER_COL_PRIVS

Grants on columns for which the user is the owner, grantor or grantee

USER_COL_PRIVS_MADE

All grants on columns of objects owned by the user

USER_COL_PRIVS_RECD

Grants on columns for which the user is the grantee

USER_CONSTRAINTS

Constraint definitions on user's own tables

USER_CONS_COLUMNS

Information about accessible columns in constraint definitions

USER_CROSS_REFS

Cross references for user's views and synonyms

USER_DB_LINKS

Database links owned by the user

USER_DEPENDENCIES

Dependencies to and from a users objects

USER_ERRORS

Current errors on stored objects owned by the user

USER_EXTENTS

Extents comprising segments owned by the user

USER_FREE_SPACE

Free extents in tablespaces accessible to the user

USER_INDEXES

Description of the user's own indexes

USER_IND_COLUMNS

COLUMNs comprising user's INDEXes or on user's TABLES

USER_JOBS

All jobs owned by this user

USER_OBJECTS

Objects owned by the user

USER_OBJECT_SIZE

Sizes, in bytes, of various pl/sql objects

USER_OBJ_AUDIT_OPTS

Auditing options for user's own tables and views

USER_REFRESH

All the refresh groups

USER_REFRESH_CHILDREN

All the objects in refresh groups, where the user owns the refresh group

USER_RESOURCE_LIMITS

Display resource limit of the user

USER_ROLE_PRIVS

Roles granted to current user

USER_SEGMENTS

Storage allocated for all database segments

USER_SEQUENCES

Description of the user's own SEQUENCEs

USER_SNAPSHOTS

Snapshots the user can look at

USER_SNAPSHOT_LOGS

All snapshot logs owned by the user

USER_SOURCE

Source of stored objects accessible to the user

USER_SYNONYMS

The user's private synonyms

USER_SYS_PRIVS

System privileges granted to current user

USER_TABLES

Description of the user's own tables

USER_TABLESPACES

Description of accessible tablespaces

USER_TAB_AUDIT_OPTS

Auditing options for user's own tables and views

USER_TAB_COLUMNS

Columns of user's tables, views and clusters

USER_TAB_COMMENTS

Comments on the tables and views owned by the user

USER_TAB_GRANTS

Grants on objects for which the user is the owner, grantor or grantee

USER_TAB_GRANTS_MADE

All grants on objects owned by the user

USER_TAB_GRANTS_RECD

Grants on objects for which the user is the grantee

USER_TAB_PRIVS

Grants on objects for which the user is the owner, grantor or grantee

USER_TAB_PRIVS_MADE

All grants on objects owned by the user

USER_TAB_PRIVS_RECD

Grants on objects for which the user is the grantee

USER_TRIGGERS

Triggers owned by the user

USER_TRIGGER_COLS

Column usage in user's triggers

USER_TS_QUOTAS

Tablespace quotas for the user

USER_USERS

Information about the current user

USER_VIEWS

Text of views owned by the user

AUDIT_ACTIONS

Description table for audit trail action type codes. Maps action type numbers to action type names

COLUMN_PRIVILEGES

Grants on columns for which the user is the grantor, grantee, owner, or an enabled role or PUBLIC is the grantee

DICTIONARY

Description of data dictionary tables and views

DICT_COLUMNS

Description of columns in data dictionary tables and views

DUAL

 

GLOBAL_NAME

global database name

INDEX_HISTOGRAM

statistics on keys with repeat count

INDEX_STATS

statistics on the b-tree

RESOURCE_COST

Cost for each resource

ROLE_ROLE_PRIVS

Roles which are granted to roles

ROLE_SYS_PRIVS

System privileges granted to roles

ROLE_TAB_PRIVS

Table privileges granted to roles

SESSION_PRIVS

Privileges which the user currently has set

SESSION_ROLES

Roles which the user currently has enabled.

TABLE_PRIVILEGES

Grants on objects for which the user is the grantor, grantee, owner, or an enabled role or PUBLIC is the grantee

ACCESSIBLE_COLUMNS

Synonym for ALL_TAB_COLUMNS

ALL_COL_GRANTS

Synonym for COLUMN_PRIVILEGES

ALL_JOBS

Synonym for USER_JOBS

ALL_TAB_GRANTS

Synonym for TABLE_PRIVILEGES

CAT

Synonym for USER_CATALOG

CLU

Synonym for USER_CLUSTERS

COLS

Synonym for USER_TAB_COLUMNS

DBA_AUDIT_CONNECT

Synonym for USER_AUDIT_CONNECT

DBA_AUDIT_RESOURCE

Synonym for USER_AUDIT_RESOURCE

DBA_REFRESH_CHILDREN

Synonym for USER_REFRESH_CHILDREN

DICT

Synonym for DICTIONARY

IND

Synonym for USER_INDEXES

OBJ

Synonym for USER_OBJECTS

SEQ

Synonym for USER_SEQUENCES

SM$VERSION

Synonym for SM_$VERSION

SYN

Synonym for USER_SYNONYMS

TABS

Synonym for USER_TABLES

V$ACCESS

Synonym for V_$ACCESS

V$ARCHIVE

Synonym for V_$ARCHIVE

V$BACKUP

Synonym for V_$BACKUP

V$BGPROCESS

Synonym for V_$BGPROCESS

V$CIRCUIT

Synonym for V_$CIRCUIT

V$COMPATIBILITY

Synonym for V_$COMPATIBILITY

V$COMPATSEG

Synonym for V_$COMPATSEG

V$CONTROLFILE

Synonym for V_$CONTROLFILE

V$DATABASE

Synonym for V_$DATABASE

V$DATAFILE

Synonym for V_$DATAFILE

V$DBFILE

Synonym for V_$DBFILE

V$DBLINK

Synonym for V_$DBLINK

V$DB_OBJECT_CACHE

Synonym for V_$DB_OBJECT_CACHE

V$DISPATCHER

Synonym for V_$DISPATCHER

V$ENABLEDPRIVS

Synonym for V_$ENABLEDPRIVS

V$FILESTAT

Synonym for V_$FILESTAT

V$FIXED_TABLE

Synonym for V_$FIXED_TABLE

V$LATCH

Synonym for V_$LATCH

V$LATCHHOLDER

Synonym for V_$LATCHHOLDER

V$LATCHNAME

Synonym for V_$LATCHNAME

V$LIBRARYCACHE

Synonym for V_$LIBRARYCACHE

V$LICENSE

Synonym for V_$LICENSE

V$LOADCSTAT

Synonym for V_$LOADCSTAT

V$LOADTSTAT

Synonym for V_$LOADTSTAT

V$LOCK

Synonym for V_$LOCK

V$LOG

Synonym for V_$LOG

V$LOGFILE

Synonym for V_$LOGFILE

V$LOGHIST

Synonym for V_$LOGHIST

V$LOG_HISTORY

Synonym for V_$LOG_HISTORY

V$MLS_PARAMETERS

Synonym for V_$MLS_PARAMETERS

V$MTS

Synonym for V_$MTS

V$NLS_PARAMETERS

Synonym for V_$NLS_PARAMETERS

V$NLS_VALID_VALUES

Synonym for V_$NLS_VALID_VALUES

V$OPEN_CURSOR

Synonym for V_$OPEN_CURSOR

V$OPTION

Synonym for V_$OPTION

V$PARAMETER

Synonym for V_$PARAMETER

V$PQ_SESSTAT

Synonym for V_$PQ_SESSTAT

V$PQ_SLAVE

Synonym for V_$PQ_SLAVE

V$PQ_SYSSTAT

Synonym for V_$PQ_SYSSTAT

V$PROCESS

Synonym for V_$PROCESS

V$QUEUE

Synonym for V_$QUEUE

V$RECOVERY_LOG

Synonym for V_$RECOVERY_LOG

V$RECOVER_FILE

Synonym for V_$RECOVER_FILE

V$REQDIST

Synonym for V_$REQDIST

V$RESOURCE

Synonym for V_$RESOURCE

V$ROLLNAME

Synonym for V_$ROLLNAME

V$ROLLSTAT

Synonym for V_$ROLLSTAT

V$ROWCACHE

Synonym for V_$ROWCACHE

V$SESSION

Synonym for V_$SESSION

V$SESSION_CURSOR_CACHE

Synonym for V_$SESSION_CURSOR_CACHE

V$SESSION_EVENT

Synonym for V_$SESSION_EVENT

V$SESSION_WAIT

Synonym for V_$SESSION_WAIT

V$SESSTAT

Synonym for V_$SESSTAT

V$SESS_IO

Synonym for V_$SESS_IO

V$SGA

Synonym for V_$SGA

V$SGASTAT

Synonym for V_$SGASTAT

V$SHARED_SERVER

Synonym for V_$SHARED_SERVER

V$SQLAREA

Synonym for V_$SQLAREA

V$STATNAME

Synonym for V_$STATNAME

V$SYSSTAT

Synonym for V_$SYSSTAT

V$SYSTEM_CURSOR_CACHE

Synonym for V_$SYSTEM_CURSOR_CACHE

V$SYSTEM_EVENT

Synonym for V_$SYSTEM_EVENT

V$THREAD

Synonym for V_$THREAD

V$TIMER

Synonym for V_$TIMER

V$TRANSACTION

Synonym for V_$TRANSACTION

V$TYPE_SIZE

Synonym for V_$TYPE_SIZE

V$VERSION

Synonym for V_$VERSION

V$WAITSTAT

Synonym for V_$WAITSTAT

V$_LOCK

Synonym for V_$_LOCK

 

 

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