/* Andrey S. Nikolaev (Andrey.Nikolaev@rdtex.ru) https://andreynikolaev.wordpress.com Sessions waited for mutexes from DBA_HIST_ACTIVE_SESS_HISTORY Some columns were not printed to fit linesize 80. You can adjust this. BLKS - Blocking SID<span data-mce-type="bookmark" id="mce_SELREST_start" data-mce-style="overflow:hidden;line-height:0" style="overflow:hidden;line-height:0" ></span> LOC - mutex sleep Location_ID RFC - mutex RefCount usage: @mutex_awr_waits */ col sample_id noprint format 9999999 col sample_time format a17 col session_id heading "SID" format 9999 col session_serial# noprint format 9999 col event format a23 col blocking_sid heading "BLKS" format 9999 col shared_refcount noprint heading "RFC" format 99 col location_id heading "LOC" format 99 col sleeps noprint format 99999 col mutex_object format a15 set pagesize 50000 set wrap off SELECT sample_id,to_char(sample_time,'dd-mm-yy hh24:mi:ss') sample_time,session_id,session_serial#,sql_id,event,p1 IDN, FLOOR (p2/POWER(2,4*ws)) blocking_sid,MOD (p2,POWER(2,4*ws)) shared_refcount, FLOOR (p3/POWER (2,4*ws)) location_id,MOD (p3,POWER(2,4*ws)) sleeps, (select nvl(CASE WHEN (event LIKE 'library cache:%' AND p1 <= power(2,17)) THEN 'library cache bucket: '||p1 ELSE (SELECT kglnaobj FROM x$kglob WHERE kglnahsh=p1 AND (kglhdadr = kglhdpar) and rownum=1) END, (select substr(sql_text,1,1000) from dba_hist_sqltext where DBMS_UTILITY.SQLID_TO_SQLHASH(sql_id)=p1 and dbid=dba_hist_active_sess_history.dbid and rownum=1)) from dual) mutex_object FROM (SELECT DECODE (INSTR (banner, '64'), 0, '4', '8') ws FROM v$version WHERE ROWNUM = 1) wordsize, dba_hist_active_sess_history WHERE p1text='idn' AND session_state='WAITING' and rownum < 1000 ORDER BY sample_id desc; /* SQL> @mutex_awr_waits SAMPLE_TIME SID SQL_ID EVENT IDN BLKS LOC MUTEX_OBJECT ----------------- ----- ------------- ----------------------- ---------- ----- --- ------------ 19-09-17 02:25:29 1982 ahkdwaxwnhvwf cursor: pin S wait on X 2034790286 535 5 create table 19-09-17 03:04:26 1085 cu32d197864an cursor: pin S wait on X 1317212500 1835 5 WITH MONITOR_ 19-09-17 02:52:33 2868 37vwvqw8nq24a library cache: mutex X 919375363 1519 0 WRI$_REPT_SQL ... */