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APPLIES TO:Oracle Database - Enterprise Edition - Version 11.2.0.2.0 and laterOracle Database Cloud Schema Service - Version N/A and later Oracle Database Exadata Express Cloud Service - Version N/A and later Oracle Database Exadata Cloud Machine - Version N/A and later Oracle Database Cloud Exadata Service - Version N/A and later Information in this document applies to any platform. PURPOSEThe purpose of this note is to answer frequently asked questions about the clusterware (Grid Infrastructure) resource ora.cvu. QUESTIONS AND ANSWERSWhat is ora.cvu?ora.cvu is a new resource introduced with Grid Infrastructure 11.2.0.2. The purpose of this resource is to invoke clusterware health checks at regular intervals. What does ora.cvu do?ora.cvu invokes the cluster verification utility. It executes the following command in the background. cluvfy comp health -_format
Where are the traces/logs of ora.cvu located?The logs related to ora.cvu are located under <GRID_HOME>/log/<node>/cvu/. There are two directories underneath: one for log file s(cvulog) and one for trace files (cvutrc). For 12.1.0.2 onward, it's in <ORACLE_BASE>/crsdata/<node>/cvu/cvulog and <ORACLE_BASE>/crsdata/<node>/cvu/cvutrc Is ssh user equivalence required for ora.cvu to run?Yes, it's required for grid user, ref: note 1943147.1 - Frequent sshd login by grid user in cluster nodes by ora.cvu resource How to check if ora.cvu is running?The status of the resource ora.cvu can be checked with the following command. $ crsctl stat res ora.cvu -t
-------------------------------------------------------------------------------- NAME TARGET STATE SERVER STATE_DETAILS -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.cvu 1 ONLINE ONLINE rac1 Is it expected that ora.cvu is running on only one node of the cluster?Yes, that's the correct behavior. If the node on which this resource is running goes down, it will relocate to another node of the cluster. How to stop/start ora.cvu?Customer should not stop ora.cvu without guidance from Oracle Development/Support. ora.cvu can be stopped using the "srvctl stop cvu". For example: $ srvctl stop cvu
$ srvctl status cvu CVU is enabled but is not running $ crsctl stat res ora.cvu -t -------------------------------------------------------------------------------- NAME TARGET STATE SERVER STATE_DETAILS -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.cvu 1 OFFLINE OFFLINE ora.cvu can be started using the "srvctl start cvu". For example: $ srvctl start cvu
$ srvctl status cvu CVU is enabled and running on node rac1 $ crsctl stat res ora.cvu -t -------------------------------------------------------------------------------- NAME TARGET STATE SERVER STATE_DETAILS -------------------------------------------------------------------------------- Cluster Resources -------------------------------------------------------------------------------- ora.cvu 1 ONLINE ONLINE rac1 The resource can be started/stopped with grid infrastructure user. The resource has to be enabled to be started. It is enabled by default. How to enable/disable ora.cvu?Customer should not disable ora.cvu without guidance from Oracle Development/Support. Follow below to enable/disable cvu and verify its status. Step 1: To enable cvu $ srvctl enable cvu
$ srvctl status cvu CVU is enabled but is not running $ crsctl stat res ora.cvu -p | grep ENABLED ENABLED=1 Step 2: To disable cvu $ srvctl disable cvu
$ srvctl status cvu CVU is disabled $ crsctl stat res ora.cvu -p | grep ENABLED ENABLED=0 The resource can be enabled/disbaled with grid Infrastructure user. Please note that CVU was stopped while executing this command.
Use of CHECK_RESULT parameter?You can view the result of the earlier execution of cvu in the check_result parameter. For example, $ crsctl stat res ora.cvu -p | grep CHECK_RESULT
CHECK_RESULTS=PRVF-7573 : Sufficient swap size is not available on node "rac1" [Required = 2.9218GB (3063714.0KB) ; Found = 2GB (2097144.0KB)], PRVF-7573 : Sufficient swap size is not available on node "rac2" [Required = 2.9218GB (3063714.0KB) ; Found = 2GB (2097144.0KB)] Known issues with ora.cvu
REFERENCESNOTE:316817.1 - Cluster Verification Utility (CLUVFY) FAQNOTE:1368033.1 - Windows: ora.CVU Health Check Leaves Processes Open And Exhaust Heap Memory (and processes) |