What's New in This Guide

This section introduces the documentation updates for release 25.2.1xx.

Release 25.2.101 - G39117-05, February 2026

Made minor editorial changes in the document.

Release 25.2.101 - G39117-04, February 2026

Installation Updates

Updated the Downloading cnDBTier Package section to use fixed, hardcoded names, reducing manual effort and enabling compatibility with the new OSO ALR config feature.

Upgrade Updates

Added the section Verifying the Schema Upgrade to verify that the schema upgrade was successful and has been replicated across the georeplication sites.

Release 25.2.101 - G39117-03, December 2025

Made editorial changes in the Fault Recovery chapter.

Release 25.2.101 - G39117-02, November 2025

Updated the release number to "25.2.101" in the entire document.

Release 25.2.100 - G39117-01, November 2025

General Updates
  • Updated the release number to "25.2.100" in the entire document.
  • Updated the Oracle Error Correction Policy table in the Oracle Error Correction Policy section.
Installation Updates
  • Added the following global configuration parameters to support automated certificate lifecycle management in the Global Parameters section:
    • /global/tls/autoReloadTLS/enable
    • /global/tls/autoReloadTLS/cronjobExpression
    • /global/ndbappTLS/autoReloadTLS/enable
    • /global/ndbappTLS/autoReloadTLS/cronjobExpression
  • Added the following global configuration parameters to support georeplication recovery in the Global Parameters section:
    • /global/geoReplicationRecovery/parallelTransferAndRecovery/enable
    • /global/geoReplicationRecovery/parallelTransferAndRecovery/localTransfer/backupThreadPoolSize
    • /global/geoReplicationRecovery/parallelTransferAndRecovery/localTransfer/checksumThreadPoolSize
    • /global/geoReplicationRecovery/parallelTransferAndRecovery/remoteTransfer/backupThreadPoolSize
    • /global/geoReplicationRecovery/parallelTransferAndRecovery/remoteTransfer/checksumThreadPoolSize
Upgrade Updates

Updated the Upgrading cnDBTier Clusters section to mention that ASM can be enabled for both internal and external communication or can be enabled only for external communication using the global.istioSidecarInject.mode parameter.
Configuration Updates

Added the Changing Authentication Plugins in MySQL section that provides instructions on how to replace the deprecated authentication plugin with caching_sha2_password using the dbtchplugin plugin.