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Configuring SAP HANA System Replication

For more information about the replication features that SAP supports, Go to the SAP website, HANA System Replication.

Important

  • If you have Commvault Service Pack 10 or earlier and you have a multinode SAP HANA database, then you must set the first node to a node that can successfully run hdbsql commands. After a "takeover" event, you must update the order of the nodes to ensure that you can run backups from the CommCell Console or from the Commvault scheduler. You can perform this operation by using the Commvault command line interface. For more information, see Modifying SAP HANA Instances Using the Commvault Command Line Interface.

  • For Commvault Service Pack 11 or higher, the Commvault SAP HANA agent automatically detects and manages SAP HANA takeovers for streaming backups, so you no longer need to make manual changes. In the case of IntelliSnap backups, you must change the order of the physical nodes to keep the current primary node as the first node for the SAP HANA instance. For backups to work in a SAP HANA replication system, verify that the operationMode is registered as logreplay. For more information, see KB article 59784.

Backups that you perform from SAP HANA Studio are not affected by the node order as long as the node appears on the instance details (Instance Properties dialog box, Details tab, Hana Database Instances box).

When you fail over the HANA service from node1 to node2, run a full backup of the database.

Procedure

  1. Install the SAP HANA agent on all the primary and secondary nodes or VMs that are part of the same SID.

  2. Create a pseudo client and add all the nodes to that pseudo client. The order must be the primary node and the secondary nodes.

    For information on creating the client on a clustered and non-clustered setup, see Configuring SAP HANA for a Multi-Node or Clustered Environment.

What to Do Next

In SAP HANA Studio, configure backint for the database.

For backups to work after a SAP HANA takeover, create a the SAP HANA HDBUSERSTORE key to connect to the SAP HANA database. For more information, see Creating the SAP HANA HDBUSERSTORE KEY.

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