Fix the error below and try again.
Error is authentication failed.
changed password in schema, updated the same password in adminconsole, em. Still BI_PLATFORM schema get locked.
There is a MOS document about how to uninstall Essbase in OBIEE 11g, and there is an Oracle blog post pointing to a MOS document on how to change passwords (all the password) so that your Essbase will work just fine.
Just trying to find the link to the second one (so you can finish changing the password in the places you misses).