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Merge pull request #1163 from oracle-devrel/uschwinn-dbreplaydebug
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‎data-platform/core-converged-db/real-application-testing/db-replay/README.md

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@@ -23,6 +23,8 @@ For more details on the usage in ADB refer to the [documentation](https://docs.o
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- [Testing Guide](https://docs.oracle.com/en/database/oracle/oracle-database/19/ratug/database-replay.html#GUID-C5CAF3E6-0F1C-4BD6-BC03-F71744AD600E)
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- [PL/SQL Packages and Types Reference - DBMS_WORKLOAD_CAPTURE](https://docs.oracle.com/en/database/oracle/oracle-database/19/arpls/DBMS_WORKLOAD_CAPTURE.html#GUID-77C6507C-3DE6-4FB4-B180-530BEB840BE8)
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- [PL/SQL Packages and Types Reference - DBMS_WORKLOAD_REPLAY](https://docs.oracle.com/en/database/oracle/oracle-database/19/arpls/DBMS_WORKLOAD_REPLAY.html#GUID-FE03A123-2257-41FF-BA90-AD0114DC1A4F)
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- [Database Replay monitor report (dbms_wrr_report) (Doc ID 2696765.1)](https://support.oracle.com/epmos/faces/SearchDocDisplay?_adf.ctrl-state=1dcdrnc7m4_53&_afrLoop=462946945372255)
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- [Scripts to Debug Slow Replay (Doc ID 760402.1)](https://support.oracle.com/epmos/faces/DocumentDisplay?_afrLoop=462075676937267&id=760402.1&_adf.ctrl-state=1dcdrnc7m4_53)
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- [Test Workloads with Oracle Real Application Testing - Autonomous Database](https://docs.oracle.com/en/cloud/paas/autonomous-database/serverless/adbsb/autonomous-real-application-testing.html#GUID-EB8F065E-5FBB-480D-BAF6-5A0446740073)
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- [PL/SQL Packages and Types Reference for Autonomous Database - DBMS_CLOUD_ADMIN](https://docs.oracle.com/en/cloud/paas/autonomous-database/serverless/adbsb/dbms-cloud-admin.html#GUID-D76B229E-781E-45C0-9F14-CAF30F9E6E3B)
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‎data-platform/core-converged-db/real-application-testing/db-replay/files/README.md

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@@ -59,8 +59,14 @@ Start WRCs in the background on the replay machine or a separate machine (e.g. $
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- Replay report: replayreport.sql
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- Import capture AWRs: importAWR.sql
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- ComparePeriod report: comparereplayreport.sql
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(Note: it may be useful to generate an additional AWR spanning the replay period.)
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(Note: it may be useful to generate an additional AWR spanning the replay period.)
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### 5) Debug Database Replay (optional, only in the case you discover slow replays)
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- debug slow replay in dba_alert_history: debug_slow_replay_alert.sql
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- debug WRC sessions with gv$workload_replay_thread and gv$session: debug_wrc_sessions.sql
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- debug wrc waits with gv$workload_replay_thread: debug_wrc_wait.sql
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- debug slow replay info report: debug_slow_replay_info.sql
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- monitoring report using dbms_wrr_report (see also Doc ID 2696765.1): monitor_with_dbms_wrr_report.sql
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# License
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‎data-platform/core-converged-db/real-application-testing/db-replay/files/debug_slow_replay_alert.sql

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-- debug slow replay in alert
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set linesize 9999
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col object_name format a20
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col reason format a100
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col creation_time format a20
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select object_name, reason, to_char(creation_time,'MM-DD-YYYY HH24:MM:SS') as creation_time
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from dba_alert_history
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where reason_id between 160 and 165
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order by creation_time
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/
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‎data-platform/core-converged-db/real-application-testing/db-replay/files/debug_slow_replay_info.sql

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rem Script displays some informations that may be helpfull to analyze slow running RAT-Replays
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rem See also MOS-Note 760402.1
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set echo on
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set verify off
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set pagesize 200
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set lines 500 trimspool on pages 60
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spool debug_replay.txt
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col filter_set_name format a30
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col default_action format a20
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col synchronization format a10
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col connect_time_scale format 99999 heading "CONNECT|TIME|SCALE"
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col think_time_scale format 999999 heading "THINK|TIME|SCALE"
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col think_time_auto_correct format a8 heading " THINK| TIME| AUTO|CORRECT"
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col scale_up_multiplier format 99999 heading "SCALE|UP|MULTIPLIER"
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col start_time format a18
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col end_time format a18
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REM Replay Parameter
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select id repl, to_char(start_time,'DD-Mon HH24:MI:SS') start_time, to_char( end_time,'DD-Mon HH24:MI:SS') end_time,
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duration_secs, filter_set_namE, default_action, synchronization,
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connect_time_scale, think_time_scale, think_time_auto_correct, scale_up_multiplier
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-- , think_time, elapsed_time_diff
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from dba_workload_replays
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where id = (select max(id)
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from dba_workload_replays)
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/
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col capture_id format 9999
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col replay_id format 9999
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col start_time format a21
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col end_time format a21
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col current_time format a21
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col directory_path format a38
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col "% replayed" format 990.00
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col status format a15
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col r_dbtime_sec format 999G999G990D00
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col c_dbtime_sec format 999G999G990D00
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col repl_user_calls format 999G999G999G999
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col capt_user_calls format 999G999G999G999
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col capt_calls_total format 999G999G999G999
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col c_unreplayable format 999G999G999G999
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col repl_id format 99999
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col capt_id format 99999
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col begin_snap format 999999 heading "BEGIN|SNAP"
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col end_snap format 999999 heading "END|SNAP"
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col status format a15
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col "#Clients" format 99999999
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col Real_Time_Repl_Capture format a17 heading "Real-Time Repl/Capt"
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col DB_Time_Repl_Capture format 999G999D00 heading "% DB-Time Repl/Capt"
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col "%Calls repl'd" format 9990D00 Heading "%Calls|repl'd"
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col "% Replaytime" format 99G990D00 heading "% Replay|time"
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col "% Divergences" format 990D00
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col "User Calls" format 999G999G999G999G999
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col "Replay Divergences" format 999G999G999G999G999
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col max_repl_id new_value max_repl_id heading id
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col id format 9999
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col repl format 9999REM Replay Progress
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select r.id repl, r.capture_id capt,
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r.status,
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-- r.name,
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r.awr_begin_snap begin_snap, r.awr_end_snap end_snap, r.num_clients "#Clients" ,
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lpad(trunc((nvl(r.end_time,sysdate) - r.start_time) * (24 * 60 * 60)/3600),2,'0') ||':'|| lpad(trunc(mod((nvl(r.end_time,sysdate) - r.start_time) * (24 * 60 * 60),3600) / 60 ),2,'0') ||':'||lpad(mod((nvl(r.end_time,sysdate) - r.start_time) * (24 * 60 * 60),60),2,'0')
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|| '/' ||
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lpad(trunc((nvl(c.end_time,sysdate) - c.start_time) * (24 * 60 * 60)/3600),2,'0') ||':'|| lpad(trunc(mod((nvl(c.end_time,sysdate) - c.start_time) * (24 * 60 * 60),3600) / 60 ),2,'0') ||':'||lpad(mod((nvl(c.end_time,sysdate) - c.start_time) * (24 * 60 * 60),60),2,'0') "Real_Time_Repl_Capt" ,
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round(r.user_calls / (c.user_calls) * 100,2) "%Calls repl'd",
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round( (nvl(r.end_time,sysdate) - r.start_time) /
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(nvl(c.end_time,sysdate) - c.start_time )* 100,3) "% Replaytime",
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r.USER_CALLS repL_user_calls, c.user_calls capt_user_calls,
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c.user_calls_total capt_calls_total,
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c.user_calls_unreplayable c_unreplayable,
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round((r.dbtime / c.dbtime * 100),2) "DB_Time_Repl_Capture"
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--, elapsed_time_diff, elapsed_time_diff / (1000 * 1000) ela_diff_sec
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from dba_workload_replays r , dba_workload_captures c
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where c.id = r.capture_id
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and r.id = (select max(id) from dba_workload_replays)
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/
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REM Query to Obtain Information on Blocking Sessions with gv$workload_replay_thread
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col inst_id format 99999
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col sid format 99999
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col spid format a6
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col blocking_session_status format a15 heading 'BS'
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col blocking_instance format 99 heading 'BI'
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col blocking_session format 99999 heading 'BLKSID'
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col session_type format a11
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col event format a31
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col file_name format a21
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col file_id format 9999999999999999999
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col call_counter format 9999999
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col wait_for_scn format 99999999999999 heading 'WAITING FOR'
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col wfscn format 99999999999999 heading 'WFSCN'
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col commit_wait_scn format 99999999999999 heading 'CWSCN'
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col post_commit_scn format 99999999999999 heading 'PCSCN'
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col clock format 99999999999999999999 heading 'CLOCK'
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col next_ticker format 999999999999999999999 heading 'NEXT TICKER'
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select wrt.inst_id, wrt.sid, wrt.serial#, wrt.spid,
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s.BLOCKING_SESSION_STATUS, s.BLOCKING_INSTANCE,
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s.blocking_session,
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wrt.session_type, wrt.event,
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wrt.file_name, wrt.file_id, wrt.call_counter,
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wrt.wait_for_scn,
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greatest(wrt.dependent_scn, wrt.statement_scn) as wfscn,
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wrt.commit_wait_scn, wrt.post_commit_scn,
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wrt.clock, wrt.next_ticker
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from gv$workload_replay_thread wrt, gv$session s
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where wrt.sid = s.sid
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and wrt.serial# = s.serial#
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order by inst_id, sid
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/
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spool off
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col repl_id format 9999999
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col capt format 9999
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col "Real_Time_Repl_Capt" format a20

‎data-platform/core-converged-db/real-application-testing/db-replay/files/debug_wrc_session.sql

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-- debug WRC sessions
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set linesize 500 pagesize 200
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col inst_id format 99999
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col sid format 99999
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col spid format a6
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col blocking_session_status format a15 heading 'BLOCKING'
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col blocking_instance format 99 heading 'BI'
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col blocking_session format 99999 heading 'BLKSID'
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col session_type format a11
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col event format a31
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col file_name format a21
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col file_id format 9999999999999999999
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col call_counter format 9999999
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col wait_for_scn format 99999999999999 heading 'WAITING FOR'
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col wfscn format 99999999999999 heading 'WFSCN'
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col commit_wait_scn format 99999999999999 heading 'CWSCN'
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col post_commit_scn format 99999999999999 heading 'PCSCN'
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col clock format 99999999999999999999 heading 'CLOCK'
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col next_ticker format 999999999999999999999 heading 'NEXT TICKER'
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select wrt.inst_id, wrt.sid, wrt.serial#, wrt.spid,
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s.BLOCKING_SESSION_STATUS, s.BLOCKING_INSTANCE,
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s.blocking_session,
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wrt.session_type, wrt.event,
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wrt.file_name, wrt.file_id, wrt.call_counter,
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wrt.wait_for_scn,
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greatest(wrt.dependent_scn, wrt.statement_scn) as wfscn,
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wrt.commit_wait_scn, wrt.post_commit_scn,
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wrt.clock, wrt.next_ticker
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from gv$workload_replay_thread wrt, gv$session s
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where wrt.sid = s.sid
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and wrt.serial# = s.serial#
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order by inst_id, sid
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;
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‎data-platform/core-converged-db/real-application-testing/db-replay/files/debug_wrc_wait.sql

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-- debug WRC waits
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column event format a40
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select event, count(*), min(wait_for_scn)
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from gv$workload_replay_thread
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where session_type = 'REPLAY'
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group by event;

‎data-platform/core-converged-db/real-application-testing/db-replay/files/monitor_with_dbms_wrr_report.sql

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/* Database Replay monitor report (dbms_wrr_report) (Doc ID 2696765.1)
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Identify percentage progress of replay,
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the slowest streams or sessions in the replay,
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waiter and blocker in the replay,
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and highest Database Wait Event during the replay
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Refer to Doc ID 2696765.1 for more information*/
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-- Step 1: Identify replay id from dba_workload_replays
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select id from dba_workload_replays where status = 'IN PROGRESS';
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-- step 2: Run procedure dbms_wrr_report.replay
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set serveroutput on
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exec dbms_wrr_report.replay(&replayid);

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