Sun Java System Application Server Enterprise Edition 8.1 2005Q2 Administration Guide

ProcedureTo set the keypoint interval

Keypoint operations compress the transaction log file. The keypoint interval is the number of transactions between keypoint operations on the log. Keypoint operations can reduce the size of the transaction log files. A larger number of keypoint intervals (for example, 2048) results in larger transaction log files, but fewer keypoint operations, and potentially better performance. A smaller keypoint interval (for example, 256) results in smaller log files but slightly reduced performance due to the greater frequency of keypoint operations.

  1. In the tree component select the Configurations node.

  2. Select the instance to configure:

    • To configure a particular instance, select the instance’s config node. For example, the default instance, server, select the server-config node.

    • To configure the default settings for all instances, select the default-config node.

  3. Select the Transaction Service node.

  4. Enter the number of transactions between keypoint operations in the Keypoint Interval field.

    The default value is 2048.

  5. Click Save.

  6. Restart the Application Server.