Installation of the DB2 user exit program

DB2 allows for the presence of a single user exit program to manage archiving of database log files. Both SAP and NetBackup deliver user exit programs for exclusive use by DB2. The user exit program resides in the DB2 database directory as db2uext2.

The use of the NetBackup user exit program is required because it automatically archives log files to a storage unit. It also enables on-demand recovery of log files by DB2.

Take precautions when installing SAP to prevent overwriting the NetBackup user exit program. Always preserve the NetBackup db2uext2 file before installing SAP and restore afterwards.