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  • Oracle Undo, A Deep Dive into DBA_UNDO_EXTENTS

    calendar May 11, 2024 · 3 min read · Oracle Database Database Administration Performance Tuning SQL Troubleshooting dba_undo_extents  ·
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    Oracle Undo: A Deep Dive into DBA_UNDO_EXTENTS

    Unlock the secrets of Oracle's undo mechanism with this in-depth guide to the DBA_UNDO_EXTENTS view. Learn how to analyze undo tablespace usage, interpret extent statuses (ACTIVE, UNEXPIRED, EXPIRED), and gain valuable insights for proactive database management. Avoid …


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SCRIPTS 115 ORACLE ADMINISTRATION RAC 12 ORACLE STRUCTURE TABLESPACE 11 ORACLE STRUCTURE FILES 10 ORACLE STRUCTURE OBJECTS 10 ORACLE ADMINISTRATION SESSION 9 ORACLE ADMINISTRATION ASM 8 ORACLE PERFORMANCE GENERAL 8 ORACLE PERFORMANCE WAITS 8 ORACLE ADMINISTRATION STATUS 7 ORACLE STRUCTURE CONSTRAINTS 7 ORACLE ADMINISTRATION USER 5 ORACLE PERFORMANCE LOCKS DML 4 ORACLE PERFORMANCE STATISTICS 4
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ORACLE ADMINISTRATION ASM8 ORACLE ADMINISTRATION INIT PARAMETERS3 ORACLE ADMINISTRATION RAC12 ORACLE ADMINISTRATION SESSION9 ORACLE ADMINISTRATION STATUS7 ORACLE ADMINISTRATION USER5 ORACLE PERFORMANCE GENERAL8 ORACLE PERFORMANCE LOCKS DML4 ORACLE PERFORMANCE STATISTICS4 ORACLE PERFORMANCE WAITS8 ORACLE STRUCTURE CONSTRAINTS7 ORACLE STRUCTURE FILES10 ORACLE STRUCTURE INDEXES2 ORACLE STRUCTURE OBJECTS10 ORACLE STRUCTURE REDO LOGS3 ORACLE STRUCTURE TABLESPACE11 ORACLE STRUCTURE UNDO4 SCRIPTS115
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Series

ADMIN GUIDE 116

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ORACLE 94 DATABASE 49 SQL 35 ADMINISTRATION 30 PERFORMANCE 20 DATABASE ADMINISTRATION 18 OPTIMIZATION 16 V$SESSION 12 DBA 11 ORACLE CLUSTERWARE 11 MANAGING 10 TABLESPACE 10 TROUBLESHOOTING 10 DBA_SEGMENTS 9
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$DATAFILE1 ACCOUNT1 ADMINISTRATION30 ALL_OBJECTS1 ALTER SESSION1 ASM2 ASM DISK UTILIZATION1 BACKUP1 CHARACTER-SET1 CLUSTER5 CLUSTER MANAGEMENT1 CONNECTED-USERS3 CONSTRAINTS3 DATA INTEGRITY3 DATA-MANAGEMENT8 DATABASE49 DATABASE ADMINISTRATION18 DATABASE MANAGEMENT2 DATABASE SIZE1 DATABASE START-UP1 DATAFILES5 DBA11 DBA_CONS_COLUMNS1 DBA_CONSTRAINTS6 DBA_DATA_FILES5 DBA_ERRORS1 DBA_EXTENTS1 DBA_FEATURE_USAGE_STATISTICS1 DBA_FREE_SPACE2 DBA_INDEXES1 DBA_LOCK1 DBA_OBJECTS7 DBA_ROLES1 DBA_ROLLBACK_SEGS1 DBA_SEGMENTS9 DBA_SOURCE1 DBA_TAB_COLUMNS1 DBA_TABLESPACES1 DBA_TEMP_FILES2 DBA_TS_QUOTAS1 DBA_UNDO_EXTENTS1 DBA_USERS1 DBMS_METADATA1 DBMS_STATS4 DBMS_STATS.GATHER_DATABASE_STATS1 DBMS_STATS.GATHER_SCHEMA_STATS1 DDL1 DEVELOPMENT1 DISK GROUP CREATION1 DISK INFORMATION4 DISK SPACE ANALYSIS1 DISKGROUP3 EXTERNAL REDUNDANCY1 FEATURES1 FREE SPACE1 GATHER_SYSTEM_STATS1 HOT-BACKUP1 I/O1 INSTALLED3 JAVA1 LAST-ACTIVITY1 LATCH1 LATCH CONTENTION1 MAINTENANCE1 MANAGEMENT8 MANAGING10 MODIFY1 MONITORING4 NLS_DATABASE_PARAMETERS1 OBJ$1 OBJECTS6 OIFCFG1 OPTIMIZATION16 ORACHECK1 ORACLE94 ORACLE - DATABASE ADMINISTRATION - SQL - DBA_CONSTRAINTS1 ORACLE ASM5 ORACLE ASM - ORACLE - DISK INFORMATION - STORAGE MANAGEMENT - DISKGROUP1 ORACLE CLUSTERWARE11 ORACLE CRS9 ORACLE DATABASE7 OSUSER1 PARAMETERS2 PEFORMANCE1 PERFORMANCE20 PERFORMANCE OPTIMIZATION3 PERFORMANCE TUNING9 PERFORMANCE-MONITORING4 PL SQL1 PLSQL1 PRIVILEGES1 PROCEDURE2 QUERY1 QUERY OPTIMIZATION1 QUOTAS1 RAC7 RECOVERY3 RESOURCE OPTIMIZATION3 ROLE PRIVILEGES1 ROLE_SYS_PRIVS1 ROLE_TAB_PRIVS1 SCHEMA SPACE USED1 SCRIPTING1 SCRIPTS1 SECURITY1 SEGMENTS3 SESSION-PID1 SESSIONS1 SESSIONS-SORTED1 SHOW2 SHOW ROLES1 SHOW_TABLE_ROLE_PRIVILEGES1 SHOW-USER-SQL5 SPACE USAGE1 SPACE USED1 SPFILE1 SQL35 SQL COMMANDS1 SQL TUTORIAL1 SQL-QUERIES1 SRVCTL3 START4 START-UP TIME1 STATISTICS MANAGEMENT1 STOP4 STORAGE2 STORAGE CAPACITY MONITORING1 STORAGE MANAGEMENT4 TABLESPACE10 TEMP2 TRACING2 TRANSACTIONS1 TROUBLESHOOTING10 TUNING2 UNDO_RETENTION1 USAGE2 USED SPACE1 USER4 USER SPACE1 USER$1 USERS2 V$ASM_OPERATION1 V$BACKUP1 V$CONTROLFILE3 V$DATAFILE7 V$DB_CACHE_ADVICE1 V$FILESTAT1 V$INSTANCE1 V$LOCK2 V$LOCKED_OBJECT1 V$LOG3 V$LOGFILE4 V$PARAMETER2 V$PROCESS2 V$SEGMENT_STATISTICS1 V$SESSION12 V$SESSION_LONGOPS1 V$SESSION_WAIT1 V$SESSTAT1 V$SQLAREA5 V$STATNAME2 V$SYSSTAT2 V$SYSTEM_EVENT2 V$TEMPFILE3 V$TRANSACTION1 V$WAITSTAT1 VDATAFILE2 X$BH1 X$KCBFWAITV1
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