Connectivity requirements in a Parallel Sysplex

Db2 data sharing requires that all Db2-related resources reside on shared disks. These resources include the Db2 catalog and directory and any user data, and the integrated catalog for Db2 data sets.

Also, all the members' logs and bootstrap data sets (BSDSs) must be on shared disks for recovery purposes. A member that performs recovery must have access to the logs of other members in the group.

Recommendation: Place work files on shared disks for the following reasons:
  • A member stays connected to its work file even if you need to restart the member on another processor.
  • You can create or drop a work file table space from any other member in the data sharing group.
Ensure that you have physical connectivity by checking the following connections:
  • Verify that one user-integrated catalog facility exists for cataloging the data sets of a data sharing group, and that you can access this catalog from each z/OS® system in the Parallel Sysplex®.
  • Verify connectivity to the following entries from each system on which a member resides:
    • A set of Db2 target libraries
    • A single Db2 catalog
    • A single Db2 directory
    • All databases that are shared
    • All log data sets
    • All BSDS data sets
    • All coupling facilities used by the data sharing group
    • User integrated catalog facility catalogs for shared databases