Oracle Clusterware Diagnosis - Expert Oracle RAC Performance Diagnostics and Tuning - page 556

Lock Info:
Write Locks:none
ReadLocks:|STATE INITED||INITIAL CHECK DONE|
<----------END OF JOINT ---------->

<------Aliases: ------->
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The preceding output is the state dump of the CRS activity, listing all the current resident resources and their
current thread IDs. The descriptions of the parameters are self-explanatory. For example:
RESTART_ATTEMPT - Number of times Oracle Clusterware attempts a restart a resource on a node before
attempting to relocate the resource to another node (if specified)
SCRIPT_TIMEOUT - Seconds (default 60) to wait for a return from the action script
CHECK_INTERVAL - The time (in seconds) between repeated executions of a resource's action program
UPTIME_THRESHOLD - The time (in seconds) that the resource should be functional before the clusterware
considers it as a stable resource.

4. Verifying the Oracle Clusterware version

[root@ssky3l11p1 ~]# /u01/app/12.1.0/grid/bin/crsctl query crs softwareversion
Oracle Clusterware version on node [ssky3l11p1] is [12.1.0.1.0]
The preceding output shows the current version of Oracle Clusterware installed and available on the cluster.

5. Verifying the current version of Oracle Clusterware being used

[root@ssky3l11p1 ~]# /u01/app/12.1.0/grid/bin/crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [12.1.0.1.0]

6. Debugging. Oracle Clusterware has several modular sub-components that perform

specific actions on behalf of the cluster services. To debug the activities performed by
these modules and sub-components, the crsctl utility provides several options.
a. Few of the CRS modules and the functionalities performed are listed in Table 16-3 .

Table 16-3. CRS Modules

Modules Functions / Description

CRSUI User interface module

CRSCOMM Communication module

CRSRTI Resource management module

CRSMAIN Main module/driver

CRSPLACE

CRS placement module

CRSAPP CRS application

CRSRES CRS resources

CRSOCR OCR interface/engine

CRSTIMER Various CRS-related timers

CRSEVT

CRS-EVM/event interface module

CRSD CRS daemon