In the Credentials property page, you specify the host credentials and database credentials. The Management Agent uses the host credentials to launch the SQL*Plus executable, and uses database credentials to connect to the target database and run the SQL script. The job can use either the preferred credentials for hosts and databases, or you can specify other credentials that override the preferred credentials.

• Use Preferred Credentials —

  Select this choice if you want to use the preferred credentials for the targets for your SQL Script job. The credentials used for both host and database are those you specify in the drop-down. If you choose Normal Database Credentials, your normal database preferred credentials are used. If you choose SYSDBA Database Credentials, the SYSDBA preferred credentials are used. For both cases, the host credentials associated with the database target are used. Each time the job executes, it picks up the current values of your preferred credentials.

• Named Credentials —

  Select this choice if you want to override the preferred credentials for all targets, then enter the named credentials you want the job to use on all targets.

  Many IT organizations require that passwords be changed on regular intervals. You can change the password of any preferred credentials using this option. Jobs and corrective actions that use preferred credentials automatically pick up these new changes, because during execution, Enterprise Manager uses the current value of the credentials (both user name and password). Named credentials are also centrally managed. A change to a named credential is propagated to all jobs or corrective actions that use it.

  For corrective actions, if you specify preferred credentials, Enterprise Manager uses the preferred credentials of the last Enterprise Manager user who edited the corrective action. For this reason, if a user attempts to edit the corrective action that a first user initially specified, Enterprise Manager requires this second user to specify the credentials to be used for that corrective action.