How to Stop Oracle Data Guard Broker Using ALTER SYSTEM Command Purpose The command ALTER SYSTEM SET dg_broker_start=false stops the Oracle Data Guard broker by shutting down the Data Guard monitor (DMON) background process. This command is essential when you need to disable broker management temporarily for …

Oracle Enable FAL Tracing on Primary Database Purpose Enabling FAL (Fetch Archive Log) tracing on the primary database helps database administrators monitor and troubleshoot archive log gap resolution between primary and standby databases in Oracle Data Guard environments. This command activates detailed trace logging …

How to Disable and Enable Oracle Archive Log Destinations Purpose The Oracle commands for disabling and enabling archive log destinations allow database administrators to control the availability of archive destinations without removing the configuration. These commands are commonly used in Oracle Data Guard …

Register Missing Log File in Oracle Database The ALTER DATABASE REGISTER PHYSICAL LOGFILE command is used to manually register archived redo log files in an Oracle Data Guard environment, specifically for physical standby databases. This command becomes essential when automatic log registration fails or when gaps occur …

Generate Active Session History ASH Report in Oracle Database The Active Session History (ASH) report is a powerful diagnostic tool that helps database administrators analyze performance issues by capturing detailed snapshots of active database sessions every second. This report provides granular insights into what …

Oracle Time Model Queries: System and Session Performance Monitoring Purpose Oracle time model queries provide database administrators with powerful tools to measure and analyze where time is spent within the database system. These queries use two essential dynamic performance views that track accumulated time for …

Enable or Disable Oracle GATHER_STATS_JOB for Automatic Statistics Collection The GATHER_STATS_JOB is a critical Oracle Database scheduled job that automatically collects optimizer statistics to ensure the database query optimizer generates efficient execution plans. This job is enabled by default when creating a new …

Oracle AWR Create Baseline for Performance Monitoring DBMS_WORKLOAD_REPOSITORY.CREATE_BASELINE What is Oracle AWR Create Baseline The DBMS_WORKLOAD_REPOSITORY.CREATE_BASELINE procedure creates a baseline by preserving a specific range of AWR snapshots for future performance comparisons. A baseline protects performance …

How to Manually Take an AWR Snapshot in Oracle Database with dbms_workload_repository.create_snapshot What is Oracle AWR Snapshot Creation? Creating a manual AWR snapshot in Oracle Database allows database administrators to capture performance statistics at specific points in time, providing precise data for …

How to Change Oracle AWR Retention Period to 14 Days using dbms_workload_repository.modify_snapshot_settings Purpose The Oracle code changes the Automatic Workload Repository (AWR) retention period from the default 8 days to 14 days (two weeks). This allows database administrators to store performance snapshots for a …