3 Replies Latest reply: May 20, 2013 5:09 AM by AshishShukla RSS

    stop/start cluster

    891445
      Which is the better one to stop/start the cluster 11.2.0.3;

      What is the difference b/n these commands below ?


      #crsctl start cluster
      # crsctl start has
      #crsctl start crs
        • 1. Re: stop/start cluster
          Balazs Papp
          http://docs.oracle.com/cd/E11882_01/rac.112/e16794/crsref.htm#CHDFEEEG
          http://docs.oracle.com/cd/E11882_01/rac.112/e16794/crsref.htm#CHDBIAAE

          apples and oranges

          crsctl stop cluster - cluster (RAC) command
          crsctl stop has - Oracle Restart command
          • 2. Re: stop/start cluster
            Santysharma-Oracle
            Hi,

            Please use crsctl stop/start crs for CRS operations on nodes. You can go for stop/start clusterware mode if maintenance is being done clusterwide.

            Regards,
            Sharma
            • 3. Re: stop/start cluster
              AshishShukla
              Hello,

              To understand the basic difference b/w all three commands, first you need to understand the daemon process architecture:

              There are four levels of daemons are there from 11.2 onward.

              Level-1 : OHASD'S Spawn_

              Here OHASD(Super Daemon process) will spawn itself and it will start :

              a) CSSDAGENT, b) CSSDMONITOR, c) ORAROOTAGENT and d) ORAAGENT


              Level-2: OHASD cssdagent, cssdmonitor, orarootagent and oraagent spawn_

              Here cssdagent, cssdmonitor, orarootagent and oraagent, they all will start:

              a) CSSD, b) CRSD, c) CTSSD, d) DISKMON, e) GIPCD, f) GPNPD, g) EVMD, h) MDNSD etc.     


              Level-3: CRSD spawns:_

              In this level CRSD will start again:

              a) ORAROOTAGENT and b) ORAAGENT


              Level-4: CRSD orarootagent and oraagent SPAWNS:_

              Both orarootagent and oraagent both will start all the resources like ASM, DB, LISTENER, VIPs etc.

              Now Answer for your question:

              *# CRSCTL STOP CLUSTER:*

              This command will stop all the resources being managed by CRSD's Oragent & Orarootagent.


              *# CRSCTL STOP CRS:*

              This command will stop entire gridInfra i.e all daemons.


              *# CRSCTL STOP HAS:*

              This command is similar like CRSCTL STOP CRS but better to use this command in standalone server having GridInfra.


              Thanks,
              Ashish Shukla

              Edited by: Ashish Shukla on May 20, 2013 3:39 PM