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5 Cards in this Set

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How can you start and stop CRS in 10g R1
1) Shut down all application services running which access the database
2) Shutdown all database instances using:-
$ORACLE_HOME/bin/srvctl stop -d database prod
3) If ASM is being used, stop ASM on each node using:-
$ORACLE_HOME/bin/srvctl stop asm -n node1
4) Stop all nodeapps on all nodes using:-
5) Shut down CRS from root user. The previous commands need to be run as oracle user. Use:-
/etc/init.d/init.crs stop
How can you start and stop CRS in 10g R2
$ORA_CRS_HOME/bin/crsctl stop
What is node applications
GSD, Listener, VIP and Oracle Notification Services are together known as node applications. These are automatically configured on each node.
What is CRS_STAT
Queries or displays the status of various componenets that are controlled by the CRS. The output will show GSD, VIP, ONS and OEM resource status.
What is OCR?
OCR is the RAC config information repository that manages information about the cluster node list and instance-to-node mapping information. Processes that makes up the CRS and other Cluster aware application use this repository to share information among them. Its contents include but are not limited to the following..
1) Node membership information
2) Database instance, node and other mapping information
3) Service charactericts
4) Characteristics of any third party applications controlled by CRS..10g R2 and later.