The Ingres checkpoint template file, cktmpl.def, may change from release to release. If you have customized your checkpoint template file, you must review and verify your changes with the new Ingres version.

If you are upgrading from Ingres 6.4, or from OpenIngres 1.2, you must redo your template changes. The cktmpl.def file format has been expanded since Ingres 6.4 and is therefore not compatible. The OpenIngres 1.2 template file format is similar to the current one, but additional entries are required. Your old checkpoint template can serve as a guide.

Tip: If your checkpoint template was customized to do multiple location checkpoints in parallel, you may be able to remove this customization entirely. Ingres supports parallel checkpoint and rollforwarddb processing directly.

If upgrading from an Ingres II release, compare the revised checkpoint template against the one installed with the new Ingres version. The template customizations may no longer be necessary due to new features in checkpoint and rollforward. For example: newer versions of Ingres support parallel checkpoint and rollforwarddb processing, so a checkpoint template customized to do multiple location checkpoints in parallel need not be done.

For more information on the format of the checkpoint template files, see the Database Administrator Guide.