Know more about RAC statistics and wait event

以下列出了RAC中的主要统计信息和等待事件：  

1. Statistics:

1.1 V$SYSSTAT, V$SESSTAT (join to V$STATNAME)

• gc cr blocks served
• gc cr block build time
• gc cr block flush time
• gc cr block send time
• gc current blocks served
• gc current block pin time
• gc current block flush time
• gc current block send time
• gc cr blocks received
• gc cr block receive time
• gc current blocks received
• gc current block receive time
• gc blocks lost
• gc claim blocks lost
• gc blocks corrupt
• global enqueue gets sync
• global enqueue gets async
• global enqueue get time
• global enqueue releases
• gcs messages sent
• ges messages sent
• global enqueue CPU used by this session
• gc CPU used by this session
• IPC CPU used by this session
• global undo segment hints helped (10.2)
• global undo segment hints were stale (10.2)

1.2 V$SYSMETRIC

• GC CR Block Received Per Second
• GC CR Block Received Per Txn
• GC Current Block Received Per Second
• GC Current Block Received Per Txn
• Global Cache Average CR Get Time
• Global Cache Average Current Get Time
• Global Cache Blocks Corrupted
• Global Cache Blocks Lost

1.3 V$SEGMENT_STATISTICS, V$SEGSTAT

• gc buffer busy
• gc cr blocks received
• gc current blocks received

1.4 DBA_HIST_SEG_STAT

• GC_CR_BLOCKS_SERVED_TOTAL
• GC_CR_BLOCKS_SERVED_DELTA
• GC_CU_BLOCKS_SERVED_TOTAL
• GC_CU_BLOCKS_SERVED_DELTA

1.5 V$GES_STATISTICS

• acks for commit broadcast(actual)
• acks for commit broadcast(logical)
• broadcast msgs on commit(actual)
• broadcast msgs on commit(logical)
• broadcast msgs on commit(wasted)
• dynamically allocated gcs resources
• dynamically allocated gcs shadows
• false posts waiting for scn acks
• flow control messages received
• flow control messages sent
• gcs assume cvt
• gcs assume no cvt
• gcs ast xid
• gcs blocked converts
• gcs blocked cr converts
• gcs compatible basts
• gcs compatible cr basts (global)
• gcs compatible cr basts (local)
• gcs cr basts to PIs
• gcs cr serve without current lock
• gcs dbwr flush pi msgs
• gcs dbwr write request msgs
• gcs error msgs
• gcs forward cr to pinged instance
• gcs immediate (compatible) converts
• gcs immediate (null) converts
• gcs immediate cr (compatible) converts
• gcs immediate cr (null) converts
• gcs indirect ast
• gcs lms flush pi msgs
• gcs lms write request msgs
• gcs msgs process time(ms)
• gcs msgs received
• gcs out-of-order msgs
• gcs pings refused
• gcs queued converts
• gcs recovery claim msgs
• gcs refuse xid
• gcs regular cr
• gcs retry convert request
• gcs side channel msgs actual
• gcs side channel msgs logical
• gcs undo cr
• gcs write notification msgs
• gcs writes refused
• ges msgs process time(ms)
• ges msgs received
• global posts dropped
• global posts queue time
• global posts queued
• global posts requested
• global posts sent
• implicit batch messages received
• implicit batch messages sent
• lmd msg send time(ms)
• lms(s) msg send time(ms)
• messages flow controlled
• messages queue sent actual
• messages queue sent logical
• messages received actual
• messages received logical
• messages sent directly
• messages sent indirectly
• messages sent not implicit batched
• messages sent pbatched
• msgs causing lmd to send msgs
• msgs causing lms(s) to send msgs
• msgs received queue time (ms)
• msgs received queued
• msgs sent queue time (ms)
• msgs sent queue time on ksxp (ms)
• msgs sent queued
• msgs sent queued on ksxp
• process batch messages received
• process batch messages sent

2. Wait Events:

在10g中RAC等待事件可以分为3类，下面列出了主要的等待事件包括一些undocumented wait event.

2.1. Real time only :

Those wait events are only defined while the process is waiting; after the wait is over, they are reclassified according to the outcome of the global cache operation. They should appear only on the following views: V$SESSION_WAIT, V$ACTIVE_SESSION_HISTORY, V$EVENT_HISTOGRAM.  

• gc cr request
• gc current request

2.2. Historical only:

These are events represent the outcome of a GC request (fixup events). They can appear in the following views: V$SESSION_EVENT, V$SYSTEM_EVENT, DBA_HIST_SYSTEM_EVENT, V$EVENTMETRIC.

• gc cr block 2-way
• gc cr block 3-way
• gc cr block busy
• gc cr block congested
• gc cr block lost
• gc cr block unknown
• gc cr grant 2-way
• gc cr grant busy
• gc cr grant congested
• gc cr grant unknown
• gc current block 2-way
• gc current block 3-way
• gc current block busy
• gc current block congested
• gc current block lost
• gc current block unknown
• gc current grant 2-way
• gc current grant busy
• gc current grant congested
• gc current grant unknown

2.3. Other events:

The remaining wait events may appear in any of the views listed before, namely: V$SESSION_WAIT, V$ACTIVE_SESSION_HISTORY, V$EVENT_HISTOGRAM, V$SESSION_EVENT, V$SYSTEM_EVENT, DBA_HIST_SYSTEM_EVENT, V$EVENTMETRIC.

• LMON global data update
• cr request retry
• gc assume
• gc block recovery request
• gc buffer busy
• gc claim
• gc cr cancel
• gc cr disk read
• gc cr disk request
• gc cr failure
• gc cr multi block request
• gc current cancel
• gc current multi block request
• gc current retry
• gc current split
• gc domain validation
• gc freelist
• gc prepare
• gc quiesce wait
• gc recovery free
• gc recovery quiesce
• gc remaster
• gcs ddet enter server mode
• gcs domain validation
• gcs drm freeze begin
• gcs drm freeze in enter server mode
• gcs enter server mode
• gcs log flush sync
• gcs remastering wait for read latch
• gcs remastering wait for write latch
• gcs remote message
• gcs resource directory to be unfrozen
• gcs to be enabled
• ges LMD suspend for testing event
• ges LMD to inherit communication channels
• ges LMD to shutdown
• ges LMON for send queues
• ges LMON to get to FTDONE
• ges LMON to join CGS group
• ges cached resource cleanup
• ges cancel
• ges cgs registration
• ges enter server mode
• ges generic event
• ges global resource directory to be frozen
• ges inquiry response
• ges lmd and pmon to attach
• ges lmd/lmses to freeze in rcfg - mrcvr
• ges lmd/lmses to unfreeze in rcfg - mrcvr
• ges master to get established for SCN op
• ges performance test completion
• ges pmon to exit
• ges process with outstanding i/o
• ges reconfiguration to start
• ges remote message
• ges resource cleanout during enqueue open
• ges resource cleanout during enqueue open-cvt
• ges resource directory to be unfrozen
• ges retry query node
• ges reusing os pid
• ges user error
• ges wait for lmon to be ready
• ges1 LMON to wake up LMD - mrcvr
• ges2 LMON to wake up LMD - mrcvr
• ges2 LMON to wake up lms - mrcvr 2
• ges2 LMON to wake up lms - mrcvr 3
• ges2 proc latch in rm latch get 1
• ges2 proc latch in rm latch get 2
• global cache busy
• global enqueue expand wait
• latch: KCL gc element parent latch
• latch: gcs resource hash
• latch: ges resource hash list