Oracle GoldenGate for DB2 z/OS doesn't replicat DDL operations. Therefore, if you have any DDL changes, you need to follow the process to stop the replication, perform the DDL operations on the source and the target database, and restart the replication.
Please refer to Oracle support note: Add Column(s) to DB2 for z/OS table (Doc ID 969767.1) for the details. You can consider using GoldenGate Event Handler to automate the process.
Please refer to Oracle support note: Add Column(s) to DB2 for z/OS table (Doc ID 969767.1) for the details. You can consider using GoldenGate Event Handler to automate the process.