Controlling Db2 databases and buffer pools
You can use various commands to control Db2 databases and buffer pools. The commands that you issue depend on the type of action that you want to take.
Procedure
To
control databases and buffer pools:
Issue the START DATABASE, STOP DATABASE, or DISPLAY DATABASE
commands. 
- START DATABASE
- Makes a database or individual partitions available. Also removes pages from the logical page list (LPL).
- DISPLAY DATABASE
- Displays status, user, and locking information for a database.
- STOP DATABASE
- Makes a database or individual partitions unavailable after existing users have quiesced. Db2 also closes and deallocates the data sets.