Siebel Database Upgrade Guide > Basic Database Preparations for a Siebel Upgrade >
Exporting Siebel Interface Table Data
Upgrades from: All Supported Siebel releases.
Environments: Development, production test, production.
Databases: All databases.
Platforms: Windows, UNIX, IBM z/OS.
This topic is part of an upgrade process. See How to Perform a Siebel Database Upgrade.
During the upgrade process, your interface tables are dropped and then re-created. To retain data in your interface tables, use the appropriate tools for your RDBMS to export data before the upgrade and then import the data after you have completed the upgrade.
During the upgrade, all custom indexes on interface tables are dropped from both logical and physical schema.