50.Oracle杂记——Oracle常用动态视图V$ENQUEUE_LOCK

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50.Oracle杂记——Oracle常用动态视图V$ENQUEUE_LOCK

视图v$enqueue_lock显示了被enqueue 状态对象拥有的所有锁。

视图描述如下:

idle> desc v$enqueue_lock;

 Name                                                                  Null?    Type

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

 ADDR                                                                                 RAW(8)

 KADDR                                                                              RAW(8)

 SID                                                                           NUMBER

 TYPE                                                                                  VARCHAR2(2)

 ID1                                                                           NUMBER

 ID2                                                                           NUMBER

 LMODE                                                                             NUMBER

 REQUEST                                                                         NUMBER

 CTIME                                                                               NUMBER

 BLOCK                                                                               NUMBER

 CON_ID                                                                           NUMBER

各个列的含义描述如下:

ADDR:锁状态对象的地址

 KADDR:锁的地址

 SID :持有或获取锁的会话ID

 TYPE:锁类型

 ID1 :锁的参数1

 ID2 :锁的参数2

 LMODE:会话持有锁的模式

 REQUEST:进程请求锁的模式

 CTIME:当前模式批准的时间

 BLOCK:是否阻塞其他锁

 CON_ID:容器ID

 

 

 

 

 

 

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