An Oracle Java Cloud Service instance can fail suddenly and issue password expiry error messages.
This failure occurs because the user password for the infrastructure repository schemas is set to expire 180 days after an Oracle Java Cloud Service instance is created. WebLogic Server generates the following error messages:
Received exception while creating connection for pool X: ORA-28001: the password has expired
java.sql.SQLException: ORA-01017: invalid username/password; logon denied
Another symptom of this problem is that a patch precheck, restoration, or scale out operation may fail.
Note:By default the schema password is set to Weblogic Administrator password during the provisioning of the Oracle Java Cloud Service instance.