Before you upgrade Oracle ERP history data, verify the Data archive version, the accelerator version, the source connection, and the history database indexes. To increase performance of the database and the upgrade scripts, gather statistics for the history database.
Complete the following tasks:
Verify that you have Data Archive version 5.3 or later. You cannot use these instructions to upgrade the history data if you have an older version of Data Archive.
Verify that you have the most recent version of the accelerator. If you do not have the most recent version of the accelerator, contact Informatica Global Customer Support.
Verify the source connection. Do not change the source connection to reflect the updated version of the application. For example, if you upgrade from Oracle E-Business Suite 11.5.10 to R12, the application version for the source connection is Oracle Applications 11.5.10.
Verify that all indexes exist in the history database and that the indexes are valid. If indexes do not exist or are not valid, run the Create Indexes job.
Gather database statistics for the history database. Gathering database statistics optimizes the database and increases performance of the upgrade scripts.