What's New in This Guide

This section introduces the documentation updates for release 25.2.1xx.

Release 25.2.100 - G39115-03, November 2025

Metrics
Added the following built-in cnDBTier JVM heap metrics as these metrics can be accessed from cnDBTier:
  • jvm_memory_used_bytes
  • jvm_memory_committed_bytes
  • jvm_memory_max_bytes

Release 25.2.100 - G39115-02, November 2025

APIs

Added the following APIs in the cnDBTier Status APIs section.

  • http://base-uri/db-tier/replication/status/realtime
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}/remotesitename/{remoteSiteName}
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}/remotesitename/{remoteSiteName}/replgrourpid/{replGrourpId}

Release 25.2.100 - G39115-01, November 2025

Feature Updates
  • New Features:
    • Automatic Management of TLS Certificates

      Added the Support for Automated Certificate Lifecycle Management section that explains how to integrate cnDBTier with Oracle Communications Cloud Native Core, Certificate Management (OCCM) to support automation of certificate lifecycle management.

    • Application Service Mesh for External Communication

      Added the Application Service Mesh (ASM) for External Communication section that explains how to secure external communication through ASM (Application Service Mesh) by selectively applying Istio sidecar injection only to pods where external communication is involved.

APIs

Added the following APIs in the cnDBTier Status APIs

  • http://base-uri/db-tier/replication/status/realtime
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}/remotesitename/{remoteSiteName}
  • http://base-uri/db-tier/replication/status/realtime/sitename/{siteName}/remotesitename/{remoteSiteName}/replgrourpid/{replGrourpId}
Alerts

The "Recommended Actions" procedure for each of the alerts is elaborated for clear understanding. See cnDBTier Alerts.

Metrics
The following metrics are added in the cnDBTier Metrics:
  • Added the following Transaction Coordinator (TC) time track metrics to monitor the average event time:
    • db_tier_tc_time_track_stats_total_index_count
    • db_tier_tc_time_track_stats_total_index_time
    • db_tier_tc_time_track_stats_total_read_count
    • db_tier_tc_time_track_stats_total_read_time
    • db_tier_tc_time_track_stats_total_scan_count
    • db_tier_tc_time_track_stats_total_scan_time
    • db_tier_tc_time_track_stats_total_scan_fragments_count
    • db_tier_tc_time_track_stats_total_scan_fragments_time
    • db_tier_tc_time_track_stats_total_transaction_count
    • db_tier_tc_time_track_stats_total_transaction_time
    • db_tier_tc_time_track_stats_total_write_count
    • db_tier_tc_time_track_stats_total_write_time
  • Added the following metric to monitor the status of replication switchover:
    • DBTier Replication Switchover Status
Maintenance Procedures