ORA-28001 the password has expired error in Solaris Cluster
By Onur Bingul on Oct 31, 2012
Solaris Cluster start or stop Oracle database using credentials of a specified user in Oracle Database.
If you have issues with starting of Oracle Database resource and see ORA-28001 error message in /var/adm/messages it means that database user's who is used by Solaris Cluster to start Oracle database, password has expired.
To resolve the issue reset the password of the Oracle database user
SQL> alter user user_name identified by password
and change connection string in Solaris Cluster using following command
-bash-3.2 # /usr/cluster/bin/clresource set -p Connect_string="user/password" oracle_resource