DAC Client using pmrep and pmcmd

How to Verify that the DAC Client is able to use pmrep and pmcmd
From a Windows command prompt, execute pmrep and then pmcmd. The test is
successful if the pmrep and pmcmd prompts appear.
If pmrep and pmcmd are not recognized, then:
■ Ensure Service Pack 4 has been applied to Informatica PowerCenter 8.1.1.
■ Verify that the INFA_DOMAINS_FILE variable points to the domains.infa file
located in the Informatica directory.
■ Verify that the PATH variable includes the path to the Informatica binaries
(\Informatica\PowerCenter\client\bin), and that pmrep.exe and pmcmd.exe
exist in the \bin folder.

I am getting 'no ocijdbc10 in java.library.path when I try to login thro' DAC client

For DAC, Oracle client 10i is pre-requisite. You won't get this error once you
install 10i.