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Oracle AWR Automatic Workload Repository PDF

28 Pages·2012·1.03 MB·English
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Most books are stored in the elastic cloud where traffic is expensive. For this reason, we have a limit on daily download.

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Markus Schmidt 01.02.2012 © Essential Bytes 1 Automatismen Überblick In-Memory-Statistics Active Session History Snapshots und Baseline Auswertung Fazit 01.02.2012 © Essential Bytes 2 AUM : Automatic Undo Management (9i) ASSM: Automatic Segment Space Management (9i) ASMM: Automatic SGA Memory Management (10g) ASM: Automatic Storage Management (10g) AWR: Automatic Workload Repository (10g) ADDM: Automatic DB Diagnostic Monitor (10g) AMM: Automatic Memory Management (11g) … Server sammelt schon immer Laufzeitinformationen Einsehbar über V$-Views Statspack zur Auswertung Ab 10g neue Mechanismen  Zusätzliche Informationen  Periodische Speicherung durch MMON  Neue Auswertungsmöglichkeiten Repository in SYSAUX DBA_HIST_* STATISTICS_LEVEL= TYPICAL|BASIC ADDM interpretiert Daten und erstellt Vorschläge  DBA_ADVISOR_* Bsp: SELECT * FROM dictionary WHERE table_name LIKE '%ADVISOR%'; SELECT * FROM dba_advisor_findings; SELECT * FROM dba_advisor_recommendations; 5 verschiedene Statistik-Klassen mit kumulierten Werten Time-Model-Statistics (Verbrauch CPU-Zeit)  V$SYS_TIME_MODEL, V$SESS_TIME_MODEL System-Statistics  V$SYSSTAT, V$SESSTAT, V$MYSTAT OS Statistics  V$OSSTAT Wait Class Statistics  V$SYSTEM_EVENT SQL Statistics  V$SQL

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Most books are stored in the elastic cloud where traffic is expensive. For this reason, we have a limit on daily download.