3. Stage 1--Define and Create the Test Environment : Post Installation Tasks : Controlling Checkpoint Disk Space
 
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Controlling Checkpoint Disk Space
Because “big data” databases can be large, it may be prudent to set the number of checkpoints maintained by the system. This can be done with the alterdb command utility.
For example, the following command configures pocdb to maintain one checkpoint only:
alterdb -keep=1 pocdb