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  • ORA4030 PGA Usage Diagnostic Script

    REM  Locate the top PGA user
    
    set lines 75
    set pages 999
    set serveroutput on
    
    spool topuser.out
    
    select * from gv$version;
    
    declare a1 number;
                a2 number;
                a3 varchar2(30);
                a4 varchar2(30);
                a5 number;
                a6 number;
                a7 number;
                a8 number;
                blankline varchar2(70);
    
    cursor code is select pid, spid, substr(username,1,20) "USER" , substr(program,1,30) "Program",
    PGA_USED_MEM, PGA_ALLOC_MEM, PGA_FREEABLE_MEM, PGA_MAX_MEM
    from v$process where pga_alloc_mem=
    (select max(pga_alloc_mem) from v$process
    where program not like '%LGWR%');
    
    begin
      blankline:=chr(13);
      open code;
      fetch code into a1, a2, a3, a4, a5, a6, a7, a8;
    
      dbms_output.put_line(blankline);
      dbms_output.put_line('               Top PGA User');
      dbms_output.put_line(blankline);
    
      dbms_output.put_line('PID:   '||a1||'             '||'SPID:   '||a2);
      dbms_output.put_line('User Info:           '||a3);
      dbms_output.put_line('Program:            '||a4);
      dbms_output.put_line('PGA Used:            '||a5);
      dbms_output.put_line('PGA Allocated:        '||a6);
      dbms_output.put_line('PGA Freeable:             '||a7);
      dbms_output.put_line('Maximum PGA:            '||a8);
    
    end;
    /
    
    set lines 132
    col value format 999,999,999,999,999
    
    select * from v$pgastat;
    
    spool off
    
    REM
    REM  Investigate memory from the database side
    REM
    
    col TTL format 999,999,999,999 heading "Total Memory"
    
    break on report
    compute sum on report of TTL
    
    select bytes TTL from v$sgainfo where name='Maximum SGA Size'
    union
    select value from v$pgastat where name='total PGA allocated'
    /
    
    set lines 132
    set pages 999
    
    spool workareaoverview.out
    
    REM overview of PGA usage
    
    col name format a40 head "Name"
    col value format 999,999,999 head "Total"
    col unit format a10 head "Units"
    col pga_size format a25 head "PGA Size"
    col optimal_executions format 999,999,999,999 head "Optimal"
    col onepass_executions format 999,999,999,999 head "One-Pass"
    col multipasses_executions format 999,999,999,999 head "Multi-Pass"
    col optimal_count format 999,999,999,999 head "Optimal Count"
    col optimal_perc format 999 head "Optimal|PCT"
    col onepass_count format 999,999,999,999 head "One-Pass Count"
    col onepass_perc format 999 head "One|PCT"
    col multipass_count format 999,999,999,999 head "Multi-Pass Count"
    col multipass_perc format 999 head "Multi|PCT"
    
    col sid format 999,999 Head "SID"
    col operation format a30 head "Operation"
    col esize format 999,999,999 head "Expected Size"
    col mem format 999,999,999 head "Actual Mem"
    col "MAX MEM" format 999,999,999 head "Maximum Mem"
    col pass format 999,999 head "Passes"
    col tsize format 999,999,999,999,999 head "Temporary|Segment Size"
    
    spool workareaoverview.out
    
    SELECT  name,  decode(unit, 'bytes', trunc(value/1024/1024), value) value ,
    decode(unit, 'bytes', 'MBytes', unit) unit FROM V$PGASTAT
    /
    
    REM Review workarea buckets to see how efficient memory is utilized
    REM  Ideal to see OPTIMAL EXECUTIONS vs. ONE-PASS and Multi-PASS
    
    select case when low_optimal_size < 1024*1024
    then to_char(low_optimal_size/1024,'999999') || 'kb  0
    order by low_optimal_size
    /
    
    REM Review workarea buckets as percentages overall
    REM      this script assuming 64K optimal size
    
    SELECT optimal_count, round(optimal_count*100/total, 2) optimal_perc,
           onepass_count, round(onepass_count*100/total, 2) onepass_perc,
           multipass_count, round(multipass_count*100/total, 2) multipass_perc
    FROM
           (SELECT decode(sum(total_executions), 0, 1, sum(total_executions)) total,
                   sum(OPTIMAL_EXECUTIONS) optimal_count,
                   sum(ONEPASS_EXECUTIONS) onepass_count,
                   sum(MULTIPASSES_EXECUTIONS) multipass_count
            FROM   v$sql_workarea_histogram
            WHERE  low_optimal_size > 64*1024)
    /
    
    REM   Review current activity in Work Areas
    
    SELECT to_number(decode(SID, 65535, NULL, SID)) sid,
           operation_type OPERATION,trunc(EXPECTED_SIZE/1024) ESIZE,
           trunc(ACTUAL_MEM_USED/1024) MEM, trunc(MAX_MEM_USED/1024) "MAX MEM",
           NUMBER_PASSES PASS, trunc(TEMPSEG_SIZE/1024) TSIZE
    FROM V$SQL_WORKAREA_ACTIVE
    ORDER BY 1,2
    /
    
    alter session set NLS_DATE_FORMAT='DD-MON-YYYY HH24:MI:SS';
    select sysdate from dual;
    
    select * from v$pgastat;
    
    col time form a30
    col name form a30
    select a.BEGIN_INTERVAL_TIME time, b.*
    from DBA_HIST_SNAPSHOT a, DBA_HIST_PGASTAT b
    where a.SNAP_ID=b.SNAP_ID
    and b.name='total PGA allocated'
    order by a.BEGIN_INTERVAL_TIME desc
    /
    
    show parameter parallel_execution_message_size
    
    show parameter memory
    
    show parameter pga
    
    
    
    spool off
    clear col
    
    
    
    #collect AIX info
    
    ls -al $ORACLE_HOME/bin/oracle >> /tmp/support.txt
    oslevel -s
    whoami >> /tmp/support.txt
    ulimit -a >> /tmp/support.txt
    svmon -O unit=MB >> /tmp/support.txt
    /usr/sbin/lsps -a >> /tmp/support.txt
    /usr/sbin/lsattr -HE -l sys0 -a realmem >> /tmp/support.txt
    ipcs -m >> /tmp/support.txt
    
    opatch lsinventory -detail
    
    #collect Linux info
    
    arch
    cat /etc/issue
    whoami
    ulimit -a
    df -h /dev/shm
    ipcs -ma
    cat /etc/sysctl.conf
    cat /proc/meminfo
    cat /proc/swaps
    cat /proc/vmstat
    opatch lsinventory -detail
    
    
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  • 原文地址:https://www.cnblogs.com/macleanoracle/p/2967290.html
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