How can I change the docbase (repository) owner password?

You will need to do the following steps:

- Stop the Docbase (repository)
- Backup file dbpasswd.txt under /Documentum/dba/config//
- Modify dbpasswd.txt file with the new database password in plain text (without encrytion just like abraxis1234)
- Re-encrypt the dbpasswd.txt file:

cd $DM_HOME/bin means --> C:\Documentum\product\5.3\bin

dm_encrypt_password -docbase -rdbms -encrypt

- Start the Docbase (repository).