If you anticipate the need to return data to the version of Sybase IQ being used before the upgrade, follow the guidelines in this section to ensure that IQ files are saved before you upgrade.
Sybase recommends that you install Sybase IQ 12.6 to
a separate location from the directory where you installed previous Sybase IQ software.
Do the following before the upgrade to ensure that you can restore:
Perform an IQ backup, as described in Chapter 13, “Backup and Data Recovery” in Sybase IQ System Administration Guide.
When you install Sybase IQ, install it in another directory, and follow the upgrade steps.
If, after you upgrade, you need to go back to the previous version, then:
Ensure that the environment variables are changed to point at the older installation directories.
Start the utility database and restore the backup that was done prior to the upgrade.
Stop the utility database and start the database that was restored.
