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Don Burleson Blog 







Speed of crsctl stop crs vs. crsctl stop cluster

Oracle Database Tips by Donald BurlesonSeptember 19, 2015

 I need to quickly bounce my RAC cluster and I wonder which is faster, using "crs stop cluster" or "crs stop crs".  Which of these commands is faster?


Answer:   In 11gR2 and beyond, you can start the HA Service Daemon (OHASD) and Clusterware stack in two ways:

Approach 1 - a single step process

     $ crsctl start crs


Approach 2 - Start it in a two-step process.  Here we start the HA service (HAS):

     $ crsctl start has

then, you start the clusterware stack by with crsctl start cluster:

     $ crsctl start cluster -all

Which is faster? Who knows? Try it on your cluster and see my notes on using the crsctl command.

Also see my notes on crsctl modify resource commands.


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