DSXchange

In Unix we have various process related to datastage as below.

1. ps -ef |grep dsrpc
2. ps -ef |grep slave
3. ps -ef |grep JobMon
4. ps -ef |grep dscs
5. ps -ef | grep phantom
6. ps -ef | grep osh
7. ps -ef | grep dsapi

Is there any manual or link which will give information about these process(dsrpc,slave,JobMon etc) like when the process will be started,which process are related to DataStage client connections, Job processes etc

http://www.dsxchange.com springs to mind!

Otherwise there's no single link or manual of which I'm aware; you will need to trawl through Information Center and developerWorks articles to gather all of the information you seek.

And, if you're on version 8.7 or later and using the DataStage Operations Console, there are even more processes than appear in your list.