You can improve performance for enterprise database feeds that have a high concurrent usage and that connect to a DB2® V9.1 database.
Slow connection times and bottlenecks might result for enterprise (JDBC) database feeds that connect to a DB2, V9.1 database that has high feed usage. Indicators include heavy I/O usage and slow connection times.
You can set the DB2 variable DB2_GRP_LOOKUP=token
to improve the connection times to the DB2 server. This setting creates an access token based on cached credentials. See this DB2 information center topic for instructions: Acquiring Windows® users' group information using an access token
Parent topic: Performance: imc3