Analyzes how statistics are gathered and provides actionable recommendations to improve the accuracy of the query optimizer.

-- Wait events (system level) SELECT event, total_waits, time_waited, average_wait FROM V$SYSTEM_EVENT WHERE wait_class != 'Idle' ORDER BY time_waited DESC;

Use AWR to collect and process performance metrics. For 12.2, you can now capture AWR data specifically for Pluggable Databases (PDBs) in multitenant environments.

Use ASH for "near real-time" diagnostics to find transient performance spikes that AWR might miss.

Use EXPLAIN PLAN or DBMS_XPLAN to analyze how the optimizer executes queries.

Oracle Database 12c Release 2 Performance Tuning Tips And Techniques -oracle Press- Direct

Analyzes how statistics are gathered and provides actionable recommendations to improve the accuracy of the query optimizer.

-- Wait events (system level) SELECT event, total_waits, time_waited, average_wait FROM V$SYSTEM_EVENT WHERE wait_class != 'Idle' ORDER BY time_waited DESC; Analyzes how statistics are gathered and provides actionable

Use AWR to collect and process performance metrics. For 12.2, you can now capture AWR data specifically for Pluggable Databases (PDBs) in multitenant environments. Analyzes how statistics are gathered and provides actionable

Use ASH for "near real-time" diagnostics to find transient performance spikes that AWR might miss. Analyzes how statistics are gathered and provides actionable

Use EXPLAIN PLAN or DBMS_XPLAN to analyze how the optimizer executes queries.

This website uses cookies to improve the functionality of our website and for analytics and advertising. Click here to learn more. By continuing to browse, you agree to use our cookies.