Review “Upgrading from a previous version” for steps common to all database migrations.
Run sp_iqcheckdb to check the validity of your current databases. Repair any index and allocation problems. See “Verify your databases” for more information.
Shutdown your 12.x servers. See “Shutdown your 12.x server” for more information.
Run iqunload with the appropriate parameters to migrate your databases. See “Migrate your simplex database” for more information.
Start the migrated database in readonly mode. Update the appropriate configuration settings and database options. See “Start the 15.1 migrated database” for more information.
Use sp_iqcheckdb to verify the migrated database. See“Verify the migrated databases” for more information.
Complete any necessary post-migration tasks. See “Post-migration tasks” for more information.
