Encrypting and decrypting user-managed data sets using z/OS DFSMS data set encryption

To encrypt data sets for user-managed table spaces or index spaces, use IDCAMS to define the shadow data sets with the KEYLABEL option.

1. Use the DFSMS Access Method Services DEFINE CLUSTER command to define the shadow data sets for the table space and index spaces with the appropriate KEYLABEL option.
2. Run the REORG utility with the SHRLEVEL CHANGE option on the table space.