You can configure and administer your databases in a clustered environment using DB2® high availability instance configuration utility (db2haicu). When you specify database manager instance configuration details to db2haicu, db2haicu communicates the required cluster configuration details to your cluster managing software.
DB2 instances that are configured in Version 9.1 for high availability by using the regdb2salin script are not supported on Versions 9.5 and later. Use the db2haicu utility to configure these instances for high availability.
Restrictions
There are some restrictions for using the DB2 high availability instance configuration utility (db2haicu). For more information, see: DB2 high availability instance configuration utility (db2haicu) restrictions.
Perform the following steps for each database manager instance:
DB2 high availability instance configuration utility (db2haicu) does not have a separate diagnostic log. You can investigate and diagnose db2haicu errors using the database manager diagnostic log, db2diag log file, and the db2pd tool. For more information, see: Troubleshooting DB2 High Availability Instance Configuration Utility (db2haicu)
In addition, the cluster manager that is used by the db2haicu utility is IBM® Tivoli® System Automation for Multiplatforms (SA MP). When troubleshooting cluster manager related issues, it is often necessary to collect trace diagnostic information for SA MP. For this reason, it is highly recommended that you configure trace spooling for SA MP. For more information about configuring trace spooling for SA MP, see http://www-01.ibm.com/support/docview.wss?uid=swg21375626. The IBM Tivoli System Automation for Multiplatforms (SA MP) data collection guide also has an appendix that describes trace spooling with different stanzas for the various subcomponents that make up the Reliable Scalable Cluster Technology (RSCT) and SA MP. To review the diagnostic data collection guide for SA MP, see http://www-01.ibm.com/support/docview.wss?uid=swg21634301