see http://ashmasters.com for information on
Oracle Active Session History (ASH)

also see Tanel Poder's ash scripts at
http://blog.tanelpoder.com/files/scripts/ash/

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• load_awr - physical and logical reads per sec from AWR with snapshot time

• top10_sql_with_events_from_AWR.sql - top 10 SQL queries with events per AWR snapshot

• topsql - top 10 sql per last N minutes from ASH

• aas_by_hour - display AAS (based on ASH) for number of days at specific time

• aas_15min - display AAS (based on AWR) for all AWR snapshots calculated per 15 min spilt with split between CPU and WAIT

• event_histograms_delta_from_AWR.sql - event histograms deltas between AWR snapshots

• topaas - display OEM like graph based on sampling and v$session view - NO DIAGNOSTIC PACK required ======= queries contained in repository

• ash_bbw.sql - buffer busy wait analysis

• ash_enq.sql - enqueue wait analays

• ash_graph.sql - basic ASH load chart in ASCII art more for demo purposes

• ash_graph_waits.sql - basic ASH load chart in ASCII art with top 2 waits per bucket

• ash_graph_waits_histash.sql - ASH load chart from DBA_HIST_ACTIVE_SESS_HISTORY only

• ash_graph_histash_by_dbid.sql - ASH load chart from DBA_HIST_ACTIVE_SESS_HISTORY only, input DBID

• ash_graph_histash_by_dbid_program.sql - ASH load chart from DBA_HIST_ACTIVE_SESS_HISTORY only, input DBID and PROGRAM

• ash_graph_histash_by_dbid_sqlid.sql - ASH load chart from DBA_HIST_ACTIVE_SESS_HISTORY only, input DBID and a SQL_ID

• ash_io_sizes.sql - I/O sizes from ASH

• ash_sql_elapsed.sql - use ASH to find longest running SQL

• ash_sql_elapsed_hist.sql - use ASH to find longest running SQL, give histogram of execution times

• ash_sql_elapsed_hist_longestid.sql - use ASH to find longest running SQL, give histogram of execution times and execution id of longest running query

• ash_top_procedure.sql - top procedures and who they call

• ash_top_session.sql - top SESSION from ASH ordered by time broke into wait, I/O and CPU time

• ash_top_sql.sql - top SQL from ASH ordered by time broke into wait, I/O and CPU time

• ash_top_sql_w_top_obj.sql - top SQL from ASH ordered by time broke into wait, I/O and CPU time, include top object for I/O waits

• latency_eventmetric.sql - wait event latency from V$EVENTMETRIC, ie last 60 seconds

• latency_system_event.sql - wait event latency from DBA_HIST_SYSTEM_EVENT

• latency_waitclassmetric.sql - User I/O latency from V$WAITCLASSMETRIC, ie over last 60 seconds

upstream/master