PL/I and COBOL invokes Batch Runtime methods for commit and rollback. For PL/I and COBOL applications, z/OS Batch Runtime offers callable procedures for commit and rollback of a transaction. Before committing the unit of work, z/OS Batch Runtime invokes the beforeCompletion method on the JDBC to indicate the start of the commit. (This in turn invokes the z/OS® RRS Commit_UR service to commit the transaction.) After the commit transaction is committed, z/OS Batch Runtime invokes the afterCompletion method on the JDBC to indicate the completion of the commit.

Before processing the rollback transaction, z/OS Batch Runtime invokes the beforeCompletion method on the JDBC to indicate the start of the rollback. (This in turn invokes the z/OS RRS Backout_UR service to back out the transaction.) After the rollback transaction is completed, z/OS Batch Runtime invokes the afterCompletion method on the JDBC to indicate completion of the rollback