How to run 3 shell scripts in parallel within datastage

[sourabhverma]

Hi All,

I am having a requirement wherein i have to execute 3 shell scripts in parallel after one of the parallel job gets completed. So for that, I have created one sequencer where i have attached the parallel job & after that i have attached 3 Eecute_Command stage for executing 3 shell scripts in parallel.

The thing is that even though the execute command stages are attached after the parallel job with the same trigger condition ,they are getting executed sequentially.

Is there any configuration setting i need to take care or are there any other factors.

Any help is appreciated.

[srinivas.g]

Just use Sequencer activity between job and execute command actvites.

[chulett]

Explain exactly what you mean by "i have attached 3 Execute_Command stage for executing 3 shell scripts in parallel."

[sourabhverma]

Hi All, Thanks for the reply.

Yes i already tried using sequencer activity in between but even then, no parallel execution of scripts.

The design is like :

one DS job -> Sequencer -> 3 links each one having Execute_Command.

I hope the design is clear now.

[chulett]

We've discusses this a few times lately. Since there's no background activity for commands, they are blocking operations. From what I recall, you may be able to build three other Sequence jobs that each have a single Execute Command stage in them and run those just after the Sequencer.

Or a single script to run the three scripts, one after the other in the background, but then you could have a control issue with knowing when all three are complete.

[sourabhverma]

Thanks chulett,

I basically created separate sequencer for each of the shell script & called according to my requirment & i got what i wanted to do.