Re-enabling Db2 data sharing

Re-enabling Db2 data sharing involves a subset of the original tasks that were required to enable data sharing. You cannot use the enabling process of installation to re-enable Db2 data sharing.

About this task

The following output from the original Db2 data sharing enabling procedure remains intact after disabling Db2 data sharing and does not need to be re-created or re-specified:
  • Data sharing subsystem parameters (output from the CLIST processing when enabling data sharing)
  • XCF definitions
  • Coupling facility definitions
  • RACF® definitions
  • Db2 catalog and directory

Procedure

To re-enable Db2 data sharing:

  1. Edit the JCL in job DSNTIJGF.

    DSNTIJGF is a change log inventory job that sets up the BSDS of the surviving member for data sharing.

  2. Run job DSNTIJGF.
  3. Change the IRLM procedure to SCOPE=GLOBAL.
  4. Start the surviving member with the subsystem parameters that were used when data sharing was originally enabled.

    During startup, you are asked to start all other members that were not quiesced at the time that you disabled Db2 data sharing. You must start all these members.

  5. Edit and run job DSNTIJFT on the surviving member to re-create the work file database for data sharing.

    See the directions in the prologue of job DSNTIJFT for information about editing this job to re-enable Db2 data sharing.