Reverting from ISM 2.2 to ISM 1.0

When you revert the database server to an earlier version, do not revert to ISM 1.0. All versions of the database server, up through Version 9.3, support ISM 2.2. Also, ISM 2.2 is year-2000 compliant, but ISM 1.0 is not. Versions of the database server without ON–Bar are not compatible with ISM.

• Because the database server installers install ISM, be sure to preserve the ISM 2.2 directory by renaming it.
• To install the earlier database server version, follow the instructions in the IBM Informix: Installation Guide.
• To revert to the earlier database server version, follow the instructions in the IBM Informix: Migration Guide.
• To restore the ISM directory, copy the new ISM files to the directory that you renamed earlier and rename the directory to its original name.

If you need to revert the database server and perform a point-in-time restore of the earlier database server version, ISM 2.2 might have the original backups in its catalog (if you followed the procedure in this manual for upgrading ISM). If the backups are no longer in the ISM catalog, recover the catalogs from the backup media after you revert the database server.