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  • Generate Active Session History ASH Report in Oracle Database

    calendar Oct 3, 2025 / Oct 7, 2025 · 6 min read · Oracle Database Performance Tuning ASH Reports Database Monitoring SQL Scripts Diagnostics AWR Session Analysis V$ACTIVE_SESSION_HISTORY  ·
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    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 …


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  • Oracle Time Model Queries: System and Session Performance Monitoring

    calendar Oct 2, 2025 / Oct 7, 2025 · 6 min read · Oracle Database Performance Tuning Time Model Statistics AWR Analysis Database Monitoring SQL Queries System Performance Session Analysis v$sess_time_model v$sys_time_model  ·
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    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 …


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  • Generate Active Session History ASH Report in Oracle Database
  • Oracle Time Model Queries: System and Session Performance Monitoring
  • Enable or Disable Oracle GATHER_STATS_JOB for Automatic Statistics Collection using dbms_scheduler
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  • Oracle AWR Create Baseline for Performance Monitoring DBMS_WORKLOAD_REPOSITORY.CREATE_BASELINE
  • List All Oracle AWR Baselines Using DBA_HIST_BASELINE
  • How to Manually Take an AWR Snapshot in Oracle Database with dbms_workload_repository.create_snapshot
  • How to Change Oracle AWR Retention Period to 14 Days using dbms_workload_repository

Categories

SCRIPTS 148 ORACLE ADMINISTRATION RAC 12 ORACLE PERFORMANCE AWR 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 STATISTICS 8 ORACLE PERFORMANCE WAITS 8 ORACLE ADMINISTRATION STATUS 7 ORACLE PERFORMANCE STATSPACK 7 ORACLE STRUCTURE CONSTRAINTS 7
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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 AWR12 ORACLE PERFORMANCE GENERAL8 ORACLE PERFORMANCE LOCKS DML4 ORACLE PERFORMANCE MEMORY3 ORACLE PERFORMANCE QUERY TUNING6 ORACLE PERFORMANCE STATISTICS8 ORACLE PERFORMANCE STATSPACK7 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 SCRIPTS148
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Series

ADMIN GUIDE 148

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ORACLE 111 DATABASE 57 SQL 43 ADMINISTRATION 34 DATABASE ADMINISTRATION 30 PERFORMANCE 30 PERFORMANCE TUNING 24 DBA 23 ORACLE DATABASE 23 OPTIMIZATION 17 MONITORING 12 TROUBLESHOOTING 12 V$SESSION 12 ORACLE CLUSTERWARE 11
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$DATAFILE1 ACCOUNT1 ADMINISTRATION34 ALL_OBJECTS1 ALTER SESSION1 ANALYZE1 ASH REPORTS1 ASM2 ASM DISK UTILIZATION1 AUTOMATION1 AUTOTRACE1 AWR10 AWR ANALYSIS1 BACKUP1 BASELINE MANAGEMENT3 CHARACTER-SET1 CLUSTER5 CLUSTER MANAGEMENT1 CONNECTED-USERS3 CONSTRAINTS3 DATA INTEGRITY3 DATA-MANAGEMENT8 DATABASE57 DATABASE ADMINISTRATION30 DATABASE CLEANUP1 DATABASE MANAGEMENT2 DATABASE MONITORING8 DATABASE OPTIMIZATION3 DATABASE PERFORMANCE1 DATABASE SIZE1 DATABASE START-UP1 DATABASE TUNING2 DATAFILES5 DBA23 DBA SCRIPTS4 DBA TASKS1 DBA TOOLS1 DBA_CONS_COLUMNS1 DBA_CONSTRAINTS6 DBA_DATA_FILES5 DBA_ERRORS1 DBA_EXTENTS1 DBA_FEATURE_USAGE_STATISTICS1 DBA_FREE_SPACE2 DBA_HIST_BASELINE1 DBA_HIST_SNAPSHOT1 DBA_HIST_WR_CONTROL2 DBA_INDEXES1 DBA_LOCK1 DBA_OBJECTS7 DBA_ROLES1 DBA_ROLLBACK_SEGS1 DBA_SEGMENTS9 DBA_SOURCE1 DBA_TAB_COLUMNS1 DBA_TABLES2 DBA_TABLESPACES1 DBA_TEMP_FILES2 DBA_TS_QUOTAS1 DBA_UNDO_EXTENTS1 DBA_USERS1 DBMS SCHEDULER1 DBMS WORKLOAD REPOSITORY1 DBMS_METADATA1 DBMS_SCHEDULER1 DBMS_STATS5 DBMS_STATS.GATHER_DATABASE_STATS1 DBMS_STATS.GATHER_SCHEMA_STATS1 DBMS_WORKLOAD_REPOSITORY4 DDL1 DEVELOPMENT1 DIAGNOSTICS1 DISK GROUP CREATION1 DISK INFORMATION5 DISK SPACE ANALYSIS1 DISKGROUP4 EXECUTION PLAN1 EXPLAIN-PLAN2 EXPORT1 EXTERNAL REDUNDANCY1 FEATURES1 FREE SPACE1 GATHER_SYSTEM_STATS1 HASH1 HOT-BACKUP1 I/O1 IMPORT1 INDEX1 INSTALLED3 JAVA1 JOB SCHEDULING1 LAST-ACTIVITY1 LATCH1 LATCH CONTENTION1 MAINTENANCE1 MAINTENANCE TASKS1 MANAGEMENT8 MANAGING10 MEMORY1 MEMORY MANAGEMENT1 MEMORY TUNING1 MODIFY1 MONITORING12 NLS_DATABASE_PARAMETERS1 OBJ$1 OBJECTS6 OIFCFG1 OPTIMIZATION17 OPTIMIZER STATISTICS1 ORACHECK1 ORACLE111 ORACLE - DATABASE ADMINISTRATION - SQL - DBA_CONSTRAINTS1 ORACLE ADMINISTRATION2 ORACLE ASM6 ORACLE CLUSTERWARE11 ORACLE CRS9 ORACLE DATABASE23 ORACLE DBA3 ORACLE DIAGNOSTICS1 ORACLE PERFORMANCE2 ORACLE SCRIPTS1 ORACLE TUNING1 OSUSER1 PARAMETERS2 PEFORMANCE1 PERFORMANCE30 PERFORMANCE ANALYSIS4 PERFORMANCE OPTIMIZATION3 PERFORMANCE TUNING24 PERFORMANCE-MONITORING8 PGA1 PL SQL1 PL/SQL5 PLSQL1 PRIVILEGES1 PROCEDURE2 QUERY1 QUERY ANALYSIS1 QUERY OPTIMIZATION3 QUERY-TUNING2 QUOTAS1 RAC7 RDBMS1 RECOVERY3 RESOURCE OPTIMIZATION3 ROLE PRIVILEGES1 ROLE_SYS_PRIVS1 ROLE_TAB_PRIVS1 SCHEMA SPACE USED1 SCRIPTING1 SCRIPTS4 SECURITY1 SEGMENTS3 SESSION ANALYSIS2 SESSION-PID1 SESSIONS1 SESSIONS-SORTED1 SHARED POOL1 SHOW2 SHOW ROLES1 SHOW_TABLE_ROLE_PRIVILEGES1 SHOW-USER-SQL5 SNAPSHOT MANAGEMENT4 SNAPSHOTS1 SPACE USAGE1 SPACE USED1 SPFILE1 SQL43 SQL COMMANDS1 SQL OPTIMIZATION1 SQL PERFORMANCE2 SQL PLUS1 SQL QUERIES2 SQL QUERY1 SQL SCRIPTS7 SQL STATISTICS1 SQL TUTORIAL1 SRVCTL3 START4 START-UP TIME1 STATISTICS3 STATISTICS GATHERING1 STATISTICS MANAGEMENT2 STATSPACK7 STOP4 STORAGE2 STORAGE CAPACITY MONITORING1 STORAGE MANAGEMENT5 STORAGE OPTIMIZATION1 SYSTEM PERFORMANCE1 TABLE1 TABLESPACE10 TEMP2 TIME MODEL STATISTICS1 TRACING2 TRANSACTIONS1 TROUBLESHOOTING12 TUNING8 UNDO_RETENTION1 USAGE2 USED SPACE1 USER4 USER SPACE1 USER$1 USERS2 UTLXPLS1 V$ACTIVE_SESSION_HISTORY1 V$ASM_OPERATION1 V$BACKUP1 V$CONTROLFILE3 V$DATABASE1 V$DATAFILE7 V$DB_CACHE_ADVICE1 V$FILESTAT1 V$INSTANCE1 V$LOCK2 V$LOCKED_OBJECT1 V$LOG3 V$LOGFILE4 V$PARAMETER2 V$PROCESS2 V$SEGMENT_STATISTICS1 V$SESS_TIME_MODEL1 V$SESSION12 V$SESSION_LONGOPS1 V$SESSION_WAIT1 V$SESSTAT1 V$SGASTAT2 V$SQLAREA8 V$STATNAME2 V$SYS_TIME_MODEL1 V$SYSSTAT2 V$SYSTEM_EVENT2 V$TEMPFILE3 V$TRANSACTION1 V$WAITSTAT1 VDATAFILE2 WORKLOAD REPOSITORY3 X$BH1 X$KCBFWAITV1
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