Create Oracle RAC databases

The Oracle RAC databases must be created manually before configuring WebSphere Portal.

All databases must be created using UNICODE Database and National character sets such as UTF8, AL32UTF8, or AL16UTF16.

IBM recommends that all databases to be used with WebSphere Portal are configured in Dedicated Server Mode.

Determine if your Oracle RAC server will be remote or local to the WebSphere Portal installation.

If using an earlier version of Oracle RAC (9i or earlier), ensure that Oracle RAC JVM is also installed.

After installing the database software for WebSphere Portal, set the buffer pools allocated to the Oracle RAC database in order for WebSphere Portal to communicate with the IBM Java Content Repository database. Use the following recommended values as a guide. Refer to the Oracle product documentation for information on how to set the buffer pools. Recommended initial buffer pool sizes are:

db_block_size = 8192 db_cache_size = 300M db_files = 1024 log_buffer = 65536 open_cursors = 1500 pga_aggregate_target = 200M pre_page_sga = true processes = 300 shared_pool_size = 200M

For IBM Java Content Repository, the open_cursors value may need to be increased based on the table count in the IBM Java Content Repository schema.


Prerequisites

Installing Oracle RAC

Create users


Parent topic:

Configure WebSphere Portal to use Oracle RAC


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Create users


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Modifying database properties