FAQ – Automatic Undo Management (AUM) / System Managed Undo (SMU) (Doc ID 461480.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 9.0.1.4 to 18.3.0.0.0 [Release 9.0.1 to 18]Oracle Database Cloud Schema Service - Version N/A and laterOrac…

Troubleshooting ORA-30036 - Unable To Extend Undo Tablespace (Doc ID 460481.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.2 [Release 9.2 to 11.2]Oracle Database - Enterprise Edition - Version 11.2.0.3 to 11.2.0.3 [Re…

ORA-01555 When Max Query Length Is Less Than Undo Retention, small or 0 Seconds (Doc ID 1131474.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.2 [Release 10.2 to 11.2]Oracle Database - Enterprise Edition - Version 11…

Master Note: High Undo Space Usage (Doc ID 1578639.1) APPLIES TO: Oracle Database Cloud Schema Service - Version N/A and laterOracle Database Exadata Cloud Machine - Version N/A and laterOracle Cloud Infrastructure - Database Service - Version N/A an…

Undo Related Wait Events & Known Issues (Doc ID 1575701.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 9.2.0.8 to 11.2.0.4 [Release 9.2 to 11.2]Oracle Database Cloud Schema Service - Version N/A and laterOracle Database Exadata Express…

Troubleshooting Guide (TSG) - ORA-01552: Cannot Use System Rollback Segment for Non-System Tablespace (Doc ID 1579215.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 9.2.0.1 and laterOracle Database Cloud Schema Service - Version N/A an…

使用aum( Automatic Undo Management) 时遇到 ORA-01555错误--- 原因和解决方式. 參考原文: ORA-01555 Using Automatic Undo Management - Causes and Solutions (Doc ID 269814.1) 适用于: Oracle Database - Enterprise Edition - Version 9.0.1.0 and later Information in this document…

How To Size UNDO Tablespace For Automatic Undo Management (Doc ID 262066.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 9.2.0.1 to 11.2.0.4 [Release 9.2 to 11.2]Oracle Database Cloud Schema Service - Version N/A and laterOracle Databas…

Automatic Tuning of Undo Retention Common Issues (Doc ID 1579779.1) APPLIES TO: Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.4 [Release 10.2 to 11.…

最近遇到了这个案例,官方文档已有详尽的分析.介绍,特转载在此,方便以后查看! Full UNDO Tablespace In 10gR2 and above (SQL> select count(status) from dba_undo_extents where status = 'EXPIRED'; COUNT(STATUS) ------------- 20SQL> select count(status) from dba_undo_extents where status = 'A…