Choosing a Persistence Store

Two types of persistent storage are supported for passivation and checkpointing of the SFSB state:

• The local file system - Allows a single server instance to recover the SFSB state after a failure and restart. This store also provides passivation and activation of the state to help control the amount of memory used. This option is not supported in a production environment that requires SFSB state persistence. This is the default storage mechanism.

• The high-availability database (HADB) - Allows a cluster of server instances to recover the SFSB state if any server instance fails. The HADB is also used as the passivation and activation store. Use this option in a production environment that requires SFSB state persistence. For information about how to set up and configure this database, see the description of the configure-ha-cluster command in the Sun Java System Application Server Enterprise Edition 8.2 Reference Manual.

Choose the persistence store in one of the following ways:

• To use the local file system, first disable availability. Select the Availability Service component under the relevant configuration in the Administration Console. Uncheck the Instance Level Availability box. Then select the EJB Container component and edit the Session Store Location value. The default is domain-dir/session-store.

• To use the HADB, select the Availability Service component under the relevant configuration in the Administration Console. Check the Instance Level Availability box. To enable availability for the EJB container, select the EJB Container Availability tab, then check the Availability Service box.

For more information, see the Sun Java System Application Server Enterprise Edition 8.2 High Availability Administration Guide.