ADDITIONS/ENHANCEMENTS IN RAC (DATABASE)

ADDITIONS/ENHANCEMENTS IN RAC (DATABASE)

What-If command evaluation

Using the new What-if command evaluation (-eval) option with srvctl, one can now determine the impact of running the command. This new addition to the srvctl command, will let you simulate the command without it actually being executed or making any changes to the current system. This is particularly useful in a situation when you want to make a change to an existing system and you’re not sure of the outcome.  Therefore, the command will provide the effect of making the change. The –eval option also can be used with crsctl command.

For example, if you want to know what will happen if you stop a particular database, you can use the following example:

$ ./srvctl stop database –d MYDB –eval

$ ./crsctl eval modify resource <resource_name> -attr “value”

Miscellaneous srvctl improvements

There are a few new additions to the srvctl command. The following demonstrates the new addition to stop/start database/instance resources on the cluster:

srvctl start database|instance –startoption NOMOUNT|MOUNT|OPEN

srvctl stop database|instance –stopoption NOMOUNT|MOUNT|OPEN

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