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Thursday, July 12, 2012

How to restart DataStage ?

Hi Friends, today I am going to share how to restart the server, what are the steps we have to take care while performing this task.

The order in which to stop all services is:

   1. Stop DataStage Engine
   2. Stop the ASB Agent
   3. Stop the WebSphere Application Server (WAS)

Here are the step-by-step instructions for each of the above.

   1. Stop DataStage Engine
          * Log into your UNIX machine as root
          * Make sure that no one is using DataStage.
          * Check if there are any processes left           
            ps -ef | grep -i phantom
            ps -ef | grep dsapi
            ps -ef | grep dscs

            These commands should not return any results. If they return results, it means that there are still some processes running. You can wait for the users to stop their processes or kill the processes (using kill -9 PID).
          * Check if dsrpc is running
            netstat -a | grep dsrpc

            If dsrpc is running, then you should get a line with the status LISTEN. If you get more lines it means that there are still some connections and you need to wait. If you see that dsrpc or other connections are in status WAIT then you also need to wait until this it disappears (you can also reboot the machine).
          * Stop DataStage Services using (you have to run this from $DSHOME)
            . ./dsenv
            bin/uv -admin -stop

          * Then see if there is any memory segment left:

            ipcs -mop | grep ade

            For 64-bit Linux, use: ipcs -qms -a

            If you get a result, take note of the PID and remove it (you will need root access)
                        ipcrm -m PID

          * Then, check the port again using
            netstat -a | grep dsrpc

            You should not get any result. If you get any results and the dsrpc is in WAIT state, then you need to wait until it disappears (you can also reboot the machine).

   2. Stop the ASB Agent (you need to be root user)
          * Go to <path to>/IBM/InformationServer/ASBNode/bin
          * Run ./NodeAgents.sh stop

            Type 'yes' if you receive the following message:
            rm: remove write-protected regular file `Agent.pid'?
           * Check the agent has stopped:
            ps -ef | grep -i agent
           * On Solaris it may be necessary to run this command if errors similar to this are returned when trying to start the agent.
            "com.ascential.acs.logging.agent.LoggingAgentSocketImpl.main(LoggingAgentSocketImpl.java:115) Caused by: java.net.BindException: Address already in use"
            /usr/ucb/ps -auxww | grep java

3. Stop the WebSphere Application Server (you need to be root user)

         *  Go to <path to>/IBM/InformationServer/ASBServer/bin
         *  Run ./MetadataServer.sh stop
         *  Be sure the java processes go away
         *  Now check there are no java processes left behind:
             ps -ef | grep java

            remove them if any exists with: > kill PID (NO -9)

The order in which to start all services is:

   1. Start WebSphere Application Server
   2. Start ASB Agent
   3. Start DataStage Engine

Here are the step-by-step instructions.

1.     Start WebSphere Application Server (you need to be root user)

o    Note: for AIX platform, do the following:
create a file in ASBServer/bin named MetadataServer_env.sh and add the following line:
ulimit -n 10240
o    Go to <path to>/IBM/InformationServer/ASBServer/bin
o    Run
./MetadataServer.sh run

2.     Start ASB Agent (you need to be root user)

o    Go to <path to>/IBM/InformationServer/ASBNode/bin
o    Run
./NodeAgents.sh start

3.     Start DataStage Engine (use the dsengine credential for your system, default/typical is dsadm)

o    Go to $DSHOME
o    . ./dsenv
o    Run
bin/uv -admin -start

njoy the simplicity.......
Atul Singh