FROMV$RESOURCE_LIMIT S WHERES.RESOURCE_NAMEIN('enqueue_resources', 'enqueue_locks', 'dml_locks', 'processes', 'processes'); 排队锁使用单独的数组而不是排队资源数组来管理排队锁,通过查询x$ksqeq(内核服务排队对象)或v$enqueue_lock视图来看到这种结构。 v$equeue_lock视图(除TX和TM锁) SELECTS.ADDR,...
Coordinates plug-in operation of transportable tablespaces enq: PR - contention Synchronizes process startup enq: PS - contention Parallel Execution Server Process reservation and synchronization enq: PT - contention Synchronizes access to ASM PST metadata enq: PV - syncstart Synchronizes slave start_...
Synchronizes space management activities in dictionary-managed tablespaces enq: SU - contention Serializes access to SaveUndo Segment enq: SW - contention Coordinates the 'alter system suspend' operation enq: TA - contention Serializes operations on undo segments and undo tablespaces enq: TB - SQ...
enq: CT - readingLock held to ensure that change tracking data remains in existence until a reader is done with it enq: CT - CTWR process start/stopLock held to ensure that only one CTWR process is started in a single instance enq: CT - state change gate 1Lock held while enabling or ...
[转帖]一篇来自网络的关于“enqueue”events的简短参考,供自己和各位同学参考:EnqueueTypeDescriptionenq:AD-allocateAUSynchronizesaccessestoaspecificOSM(Or
Synchronizes space management activities in dictionary-managed tablespaces enq: SU - contention Serializes access to SaveUndo Segment enq: SW - contention Coordinates the 'alter system suspend' operation enq: TA - contention Serializes operations on undo segments and undo tablespaces enq: TB - SQ...
enq: ST – contentionSynchronizes space management activities in dictionary-managed tablespaces enq: SU – contentionSerializes access to SaveUndo Segment enq: SW – contentionCoordinates the ‘alter system suspend’ operation enq: TA – contentionSerializes operations on undo segments and undo tablespaces...
enq: DR - contentionSerializes the active distributed recovery operation enq: DS - contentionPrevents a database suspend during LMON reconfiguration enq: DT - contentionSerializes changing the default temporary table space and user creation enq: DV - contentionSynchronizes access to lower-version Diana...
WHERE S.RESOURCE_NAME IN ('enqueue_resources', 'enqueue_locks', 'dml_locks', 'processes', 'processes'); 排队锁使用单独的数组而不是排队资源数组来管理排队锁,通过查询x$ksqeq(内核服务排队对象)或v$enqueue_lock视图来看到这种结构。 v$equeue_lock视图(除TX和TM锁) ...
WHERE S.RESOURCE_NAME IN ('enqueue_resources', 'enqueue_locks', 'dml_locks', 'processes', 'processes'); 排队锁使用单独的数组而不是排队资源数组来管理排队锁,通过查询x$ksqeq(内核服务排队对象)或v$enqueue_lock视图来看到这种结构。 v$equeue_lock视图(除TX和TM锁) ...