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Oracle RAC Propagation Window Results in SiteMinder Errors

Symptom:

Oracle RAC nodes propagate changes within 7 seconds. SiteMinder may read and write objects to a policy store, user store, session store, or audit store at a greater frequency. As a result, the default Oracle RAC propagation window can result in SiteMinder errors. These errors occur because the write operation was made into one node and the read operation, to which the write operation has not yet been propagated to, was made to another node.

Solution:

Configure the following setting in the Oracle RAC cluster:

MAX_COMMIT_PROPAGATION_DELAY=0

Note: For more information about configuring this setting, see the Oracle documentation.