Identifying the Data That is Failing to Replicate

Determine the specific subscriptions and columns that are failing to replicate.

1. Use isql to log in to the primary or destination SAP Replication Server.
   If you cannot log in to an SAP Replication Server, then it is down.
2. Run rs_subcmp to find out which data in a suspect subscription is failing to replicate.
   rs_subcmp logs in to the primary and destination data servers and compares the subscription’s data in the primary and destination tables. rs_subcmp can compare tables at SAP ASE data servers only. To compare tables at a non-SAP ASE data server, you can use a program equivalent to bcp out on the non-SAP ASE data server and bcp out on the SAP ASE data servers, then use the UNIX diff command to compare the output.
   • If rs_subcmp displays inconsistent rows, note the columns and rows that are not being replicated.
   • If only text, unitext, and image columns are not being replicated, these columns may have inconsistent replication status.
   • If no data exists for subscribed columns, the subscription has not materialized.
   • If rs_subcmp fails, one or both of the data servers are down:

     • If the primary data server is down, the SAP ASE log may be corrupt or full. The data server may also have an operating system or hardware error.

     • If the destination data server is down, there may be a Data Server Interface (DSI) problem, or an operating system or hardware error.

3. Use rs_subcmp to check if other subscriptions on the same data server are replicating:

   • If no other subscriptions are replicating, it is likely that a problem exists with that data server rather than with a particular subscription.

   • If all other subscriptions are replicating, then a problem may exist with that particular subscription.

4. Use rs_subcmp to check if other subscriptions on databases controlled by the same destination Replication Server are replicating. If replication is working for other databases controlled by the destination SAP Replication Server, then the problem is a specific database, database connection, or RepAgent. Perform these:
   • Look for orphaned transactions in the primary SAP Replication Server inbound queue for the database.
   • Troubleshoot RepAgents.
   • Troubleshoot database connections.

Once you have identified the data that is failing to replicate, verify that the SAP Replication Server threads are up.