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Troubleshooting: Slow DBMS_WORKLOAD_REPLAY.PROCESS_CAPTURE (Doc ID 1536143.1)

Last updated on JUNE 30, 2021

Applies to:

Oracle Database Cloud Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 11.2.0.1.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
Database Replay

Purpose

Troubleshooting slow database replay preprocessing of captured workload.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Background
 Do's and Don'ts
 Estimation of Time for Preprocessing
 SQL to calculate the percentage of the capture files that have been processed:
 SQL to calculate an estimate in minutes of time remaining before processing is completed.
 Parallelism
 Setting SYSTEM Tablespace to Autoextend
 Slow Queries during Preprocessing
 FULL TABLE SCAN on WRR$_REPLAY_DEP_GRAPH_TMP
 High resources for SQL on WRR$_REPLAY_DEPENDENCIES_TMP
 Suboptimal Plan for DELETE on WRR$_REPLAY_SCN_ORDER_TMP
 Other Slow Queries
 Disabling Preprocessing of Object_id
References

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