Upgrading a Db2 12 GDPS Continuous Availability with zero data loss environment to a Db2 13 environment

If you are using the GDPS Continuous Availability with zero data loss solution with Db2 12, you need to modify your Db2 data sharing groups when you migrate to Db2 13.

1. Migrate all members of the proxy data sharing group to Db2 13 function level V13R1M100 by following these steps. Suppose that the proxy data sharing group has n members. If n>1, follow steps 1.a through 1.g. If n=1, follow steps 1.a, 1.b, 1.d, 1.e, and 1.g.

   For i=1 to n:

   1. Stop replication on member i of the proxy data sharing group.
   2. Upgrade the replication product on member i as necessary for use with Db2 13.
   3. To decrease the amount of time that replication is unavailable, on another active member of the proxy data sharing group, start the replication that was previously running on member i. Do this only if your environment can support additional replication without significantly degrading the performance of the replication that is already running on the other active member.
   4. Migrate member i of the proxy data sharing group to Db2 13 function level V13R1M100. See Migrating to Db2 13 for detailed instructions.
   5. On proxy data sharing group member i, which you migrated in step 1.d, apply all Db2 13 PTFs that meet these criteria:
      • The associated APARs indicate that the PTFs are for proxy data sharing group members in a GDPS Continuous Availability with zero data loss environment.
      • You have not already applied the PTFs as part of the migration to function level V13R1M100.

      Contact IBM® Support if you need assistance in identifying those PTFs.

      Tip: Although you can apply all PTFs that are for GDPS Continuous Availability with zero data loss on the proxy data sharing group members without affecting functionality, applying only the PTFs that are intended for proxy members decreases the number of unnecessary PTFs on those members.
   6. On the member on which you started replication in step 1.c, stop the replication for member i.
   7. Restart replication on member i of the proxy data sharing group.
2. Migrate all members of the source and target data sharing groups, one member at a time, to Db2 13 function level V13R1M100.
3. On the source and target data sharing groups that you migrated in step 2, apply all Db2 13 PTFs that meet these criteria:
   • The associated APARs indicate that the PTFs are only for source data sharing group members, or for source and proxy data sharing group members, in a GDPS Continuous Availability with zero data loss environment.
   • You have not already applied the PTFs as part of the migration to function level V13R1M100.

   Contact IBM Support if you need assistance in identifying those PTFs.

   Tip: Although you can apply all PTFs that are for GDPS Continuous Availability with zero data loss on the source data sharing group members without affecting functionality, applying only the PTFs that are intended for source members decreases the number of unnecessary PTFs on those members.
4. Activate higher Db2 13 function levels on the source, target, and proxy data sharing groups, in any order. For detailed instructions, see Activating Db2 13 function level 500 or higher.