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Patching systems without downtime (for Pega Platform version 8.4 and later)

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For releases 8.4 and later, the Pega zero-downtime split-schema patch scripts use a new rules schema and temporary data schema and the patch migration script moves the rules between the appropriate schemas.

For details about the difference between a major upgrade, a minor upgrade, and a patch, see Pega Platform patches.

Use the out-of-place patch process for zero-downtime patches

Complete your patch without downtime using the out-of-place patch process. Patch installation is zero-downtime and includes only rule changes observed between the patch and the current version. Patches are reversible.

While the out-of-place patch process is the recommended method, you might prefer to apply the patch in-place, which applies the patch without using the temporary data schema. In-place patchs involve down time. For details, see, Applying a patch in-place.

  • Applying a patch without downtime

    The Pega patch process is zero-downtime for highly available systems when you use the out-of-place process so you can continue working in your application while you patch your system.

  • Applying a patch in-place

    Apply a patch in-place on systems that do not require minimal downtime.

  • Post-patch tasks

    This section describes additional tasks to perform after the new rules schema and the existing data schema have been upgraded.

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