Alternative to change db password in Documentum:
Follow these steps to change the Repository owner password in Documentum Content Server
Hi Katharina,
I had the same issue with dm_change_password.local on Solaris which was initialy caused by a Solaris-Patch which changed the fundamental behaviour of password changes in the OS.
I opened a ticket with Documentum Support and thanks to their assitance they created a fix for me. I suggest you open a support ticket and ask for this fix. I don't know if it also applies to other Unix-Systems but this should be the best way to solve your issue.
Best regards,
Ralf