Vinod Siram – Page 7

Author: Vinod Siram

Protected: Shell : Automate killing Blocking Sessions

6 years ago by Vinod SiramOracle DB Admin

There is no excerpt because this is a protected post.

Oracle :Batch updates using PLSQL Blocks.

6 years ago by Vinod SiramOracle DB Admin

Oracle :Batch updates using PLSQL Blocks. In this article , we will learn how to update million records in a table using plsql blocks. Aim : To avoid Undo errors –> For every 200 transactions we are keeping commit to avoid snapshot too old error.… Read More

Protected: Shell :Automated Gathering Stats using Shell Scripting for STALE STATS.

6 years ago by Vinod SiramOracle DB Admin

There is no excerpt because this is a protected post.

Oracle:HEALTH CHECK REPORT(Capturing Archive information).

6 years ago by Vinod SiramOracle DB Admin

Oracle:HEALTH CHECK REPORT(Capturing Archive information). In this article we will implement to capture the Archive information using Shell script. Lets create a table which can store Archive information. Connect to SYS user and execute below statement.

CREATE TABLE DBMON.ARCHIVE_USAGE_HISTORY
(
  GENERATION_DATE  DATE                         NOT NULL,
  INST_ID          NUMBER                       NOT NULL,
  TOTAL_DAY_GB     NUMBER
)
TABLESPACE DATA01
RESULT_CACHE (MODE DEFAULT)
PCTUSED    0
PCTFREE    10
INITRANS   1
MAXTRANS   255
STORAGE    (
            INITIAL          64K
            NEXT             1M
            MAXSIZE          UNLIMITED
            MINEXTENTS       1
            MAXEXTENTS       UNLIMITED
            PCTINCREASE      0
            BUFFER_POOL      DEFAULT
            FLASH_CACHE      DEFAULT
            CELL_FLASH_CACHE DEFAULT
           )
LOGGING 
NOCOMPRESS 
NOCACHE
NOPARALLEL
MONITORING;

CREATE TABLE DBMON.ARCHIVE_USAGE_HISTORY

(

GENERATION_DATE DATE NOT NULL,

INST_ID NUMBER NOT NULL,

TOTAL_DAY_GB NUMBER

)

TABLESPACE DATA01

RESULT_CACHE (MODE DEFAULT)

PCTUSED 0

PCTFREE 10

INITRANS 1

MAXTRANS 255

STORAGE (

INITIAL 64K

NEXT 1M

MAXSIZE UNLIMITED

MINEXTENTS 1

MAXEXTENTS UNLIMITED

PCTINCREASE 0

BUFFER_POOL DEFAULT

FLASH_CACHE DEFAULT

CELL_FLASH_CACHE DEFAULT

)

LOGGING

NOCOMPRESS

NOCACHE

NOPARALLEL

MONITORING;

Create unique index and primary key on ARCHIVE_USAGE_HISTORY… Read More

Multiple Indexes On the Same Set Of Column in Oracle 12c

6 years ago by Vinod SiramOracle 12C New Features

Dear Readers, In this article, we will see the following Multiple Indexes On the Same Set Of Column in Oracle 12c. You can create multiple indexes on the same set of columns but only one of the indexes can be visible at a time and… Read More

Oracle :How to find Historical TOP SQL’s

6 years ago by Vinod SiramOracle DB Admin

Oracle :How to find Historical TOP SQL’s. In this article we will see how to find out historical TOP SQL’s. The SQL Query to find Historical Top SQL’s.

set lines 235
set numwidth 20
set pages 3000
col execs for 999,999,999
col avg_etime for 999,999.999
col avg_lio for 999,999,999.9
col begin_interval_time for a30
col node for 99999
set feedback off
break on plan_hash_value on startup_time skip 1
break on plan_hash_value on TIME 
break on TIME
col time for a30

select * from 
(
select ss.instance_number node,sql_id,
to_Char(begin_interval_time,'MM-DD-YY HH24:MI') Time,
sum(nvl(executions_delta,0)) execs,
round(sum((elapsed_time_delta/decode(nvl(executions_delta,0),0,1,executions_delta))/1000000 ),2) avg_etime,
round(sum((buffer_gets_delta/decode(nvl(buffer_gets_delta,0),0,1,executions_delta))),2) AVG_LIO,
round(sum((DISK_READS_DELTA/decode(nvl(DISK_READS_DELTA,0),0,1,executions_delta))),2) AVG_PHR ,
round(sum((ROWS_PROCESSED_DELTA/decode(nvl(ROWS_PROCESSED_DELTA,0),0,1,executions_delta))),2) AVG_ROWS ,
round(sum((CPU_TIME_DELTA/decode(nvl(CPU_TIME_DELTA,0),0,1,executions_delta))/1000000),2) AVG_CPU,
round(sum(CPU_TIME_DELTA)/1000000,2) TOTAL_CPU_TIME,
RANK() OVER (PARTITION BY to_Char(begin_interval_time,'MM-DD-YY HH24:MI') ORDER BY sum(CPU_TIME_DELTA)*1000000 desc ) RANK
from DBA_HIST_SQLSTAT S, DBA_HIST_SNAPSHOT SS
where
ss.snap_id = S.snap_id and ss.snap_id > (select max(snap_id)-1000 from DBA_HIST_SNAPSHOT )
and ss.instance_number = S.instance_number
and executions_delta > 0
and begin_interval_time between to_date('27-JAN-2019 04:20','DD-MON-YYYY HH24:MI') and to_date('31-JAN-2019 06:30','DD-MON-YYYY HH24:MI')
group by
ss.instance_number,sql_id, to_Char(begin_interval_time,'MM-DD-YY HH24:MI')
order by to_Char(begin_interval_time, 'MM-DD-YY HH24:MI'),sum(CPU_TIME_DELTA)*1000000,sum((CPU_TIME_DELTA/decode(nvl(CPU_TIME_DELTA,0),0,1,executions_delta))/1000000) 
)
where RANK<=10;

set lines 235

set numwidth 20

set pages 3000

col execs for 999,999,999

col avg_etime for 999,999.999

col avg_lio for 999,999,999.9

col begin_interval_time for a30

col node for 99999

set feedback off

break on plan_hash_value on startup_time skip 1

break on plan_hash_value on TIME

break on TIME

col time for a30

select * from

(

select ss.instance_number node,sql_id,

to_Char(begin_interval_time,'MM-DD-YY HH24:MI') Time,

sum(nvl(executions_delta,0)) execs,

round(sum((elapsed_time_delta/decode(nvl(executions_delta,0),0,1,executions_delta))/1000000 ),2) avg_etime,

round(sum((buffer_gets_delta/decode(nvl(buffer_gets_delta,0),0,1,executions_delta))),2) AVG_LIO,

round(sum((DISK_READS_DELTA/decode(nvl(DISK_READS_DELTA,0),0,1,executions_delta))),2) AVG_PHR ,

round(sum((ROWS_PROCESSED_DELTA/decode(nvl(ROWS_PROCESSED_DELTA,0),0,1,executions_delta))),2) AVG_ROWS ,

round(sum((CPU_TIME_DELTA/decode(nvl(CPU_TIME_DELTA,0),0,1,executions_delta))/1000000),2) AVG_CPU,

round(sum(CPU_TIME_DELTA)/1000000,2) TOTAL_CPU_TIME,

RANK() OVER (PARTITION BY to_Char(begin_interval_time,'MM-DD-YY HH24:MI') ORDER BY sum(CPU_TIME_DELTA)*1000000 desc ) RANK

from DBA_HIST_SQLSTAT S, DBA_HIST_SNAPSHOT SS

where

ss.snap_id = S.snap_id and ss.snap_id > (select max(snap_id)-1000 from DBA_HIST_SNAPSHOT )

and ss.instance_number = S.instance_number

and executions_delta > 0

and begin_interval_time between to_date('27-JAN-2019 04:20','DD-MON-YYYY HH24:MI') and to_date('31-JAN-2019 06:30','DD-MON-YYYY HH24:MI')

group by

ss.instance_number,sql_id, to_Char(begin_interval_time,'MM-DD-YY HH24:MI')

order by to_Char(begin_interval_time, 'MM-DD-YY HH24:MI'),sum(CPU_TIME_DELTA)*1000000,sum((CPU_TIME_DELTA/decode(nvl(CPU_TIME_DELTA,0),0,1,executions_delta))/1000000)

)

where RANK<=10;

Output : In screenshot Output in Text Format :

 NODE SQL_ID        TIME                                  EXECS    AVG_ETIME        AVG_LIO              AVG_PHR             AVG_ROWS              AVG_CPU       TOTAL_CPU_TIME                 RANK
------ ------------- ------------------------------ ------------ ------------ -------------- -------------------- -------------------- -------------------- -------------------- --------------------
     1 7kmbrw7q8hn4g 01-27-19 14:00                           60         .010           78.0                    0                    1                  .01                  .32                   10
     1 3wrrjm9qtr2my                                           1         .390          482.0                    0                    2                  .37                  .37                    9
     1 4y1y43113gv8f                                         601         .000           50.6                    0                15.18                    0                  .54                    8
     1 7hu2k3a31b6j7                                         614         .000           79.2                    0                15.45                    0                  .57                    7
     1 6wrwqq7jkmv3w                                           1         .730          506.0                    0                    6                  .72                  .72                    6
     1 3xjw1ncw5vh27                                          21         .040       24,029.0                    0                    0                  .04                  .85                    5
     1 74cpnuu24wmx7                                           3         .470       18,446.3                    0                    2                  .42                 1.27                    4
     1 6mcpb06rctk0x                                           1        3.180      594,799.0                    9                    0                 3.03                 3.03                    3
     1 381t19fqhxdgp                                           1        5.180       28,698.0                    2                   75                 5.07                 5.07                    2
     1 b6usrg82hwsa3                                           1       11.360      314,544.0                   22                    0                11.21                11.21                    1
     1 39k4gf5t0831y 01-27-19 15:00                           14         .000           10.4                    0                    0                    0                  .02                   10
     1 22356bkgsdcnh                                          12         .000             .0                    0                    1                    0                  .03                    9
     1 357cru8xpxh55                                          60         .000            3.0                    0                    0                    0                  .04                    8
     1 c9umxngkc3byq                                          60         .000             .0                    0                    0                    0                  .05                    7
     1 6ajkhukk78nsr                                           1         .060        1,156.0                    0                    1                  .06                  .06                    6
     1 d9vzav10pcpfh                                          60         .000           60.0                    0                    1                    0                  .06                    5
     1 fuws5bqghb2qh                                          60         .000            9.0                    0                    0                    0                  .07                    4
     1 772s25v1y0x8k                                         120         .000             .0                    0                   28                    0                   .1                    3
     1 79vddxwy7qz3b                                           3         .070        3,009.3                    0                 6.67                  .07                   .2                    2
     1 7kmbrw7q8hn4g                                          60         .010           78.0                    0                    1                  .01                  .32                    1
     1 2fh3rvu66aaqa 01-30-19 18:09                            1         .210          369.0                   11                    1                   .1                   .1                   10
     1 7kmbrw7q8hn4g                                          11         .040          309.7                18.09                    1                  .01                  .11                    9
     1 a6ygk0r9s5xuj                                          10         .010           71.5                  1.2                    0                  .01                  .12                    8
     1 02577v815yp77                                           1         .220        4,909.0                  244                    1                  .13                  .13                    7
     1 4phvdvx32a3mf                                          10         .020          162.4                  3.3                    1                  .02                  .18                    6
     1 bxywuzvtp6wjg                                           1         .400        4,753.0                  166                    0                  .24                  .24                    5
     1 3wrrjm9qtr2my                                           1         .840        1,232.0                   56                    2                  .39                  .39                    4
     1 644jqx2hk7qg0                                           1         .600             .0                    0                    1                   .6                   .6                    3
     1 12a2xbmwn5v6z                                           1        1.720      881,392.0                 2643                 3796                  .71                  .71                    2
     1 f6cz4n8y72xdc                                           1        2.510      914,468.0                 2673                    1                  1.5                  1.5                    1

NODE SQL_ID TIME EXECS AVG_ETIME AVG_LIO AVG_PHR AVG_ROWS AVG_CPU TOTAL_CPU_TIME RANK

------ ------------- ------------------------------ ------------ ------------ -------------- -------------------- -------------------- -------------------- -------------------- --------------------

1 7kmbrw7q8hn4g 01-27-19 14:00 60 .010 78.0 0 1 .01 .32 10

1 3wrrjm9qtr2my 1 .390 482.0 0 2 .37 .37 9

1 4y1y43113gv8f 601 .000 50.6 0 15.18 0 .54 8

1 7hu2k3a31b6j7 614 .000 79.2 0 15.45 0 .57 7

1 6wrwqq7jkmv3w 1 .730 506.0 0 6 .72 .72 6

1 3xjw1ncw5vh27 21 .040 24,029.0 0 0 .04 .85 5

1 74cpnuu24wmx7 3 .470 18,446.3 0 2 .42 1.27 4

1 6mcpb06rctk0x 1 3.180 594,799.0 9 0 3.03 3.03 3

1 381t19fqhxdgp 1 5.180 28,698.0 2 75 5.07 5.07 2

1 b6usrg82hwsa3 1 11.360 314,544.0 22 0 11.21 11.21 1

1 39k4gf5t0831y 01-27-19 15:00 14 .000 10.4 0 0 0 .02 10

1 22356bkgsdcnh 12 .000 .0 0 1 0 .03 9

1 357cru8xpxh55 60 .000 3.0 0 0 0 .04 8

1 c9umxngkc3byq 60 .000 .0 0 0 0 .05 7

1 6ajkhukk78nsr 1 .060 1,156.0 0 1 .06 .06 6

1 d9vzav10pcpfh 60 .000 60.0 0 1 0 .06 5

1 fuws5bqghb2qh 60 .000 9.0 0 0 0 .07 4

1 772s25v1y0x8k 120 .000 .0 0 28 0 .1 3

1 79vddxwy7qz3b 3 .070 3,009.3 0 6.67 .07 .2 2

1 7kmbrw7q8hn4g 60 .010 78.0 0 1 .01 .32 1

1 2fh3rvu66aaqa 01-30-19 18:09 1 .210 369.0 11 1 .1 .1 10

1 7kmbrw7q8hn4g 11 .040 309.7 18.09 1 .01 .11 9

1 a6ygk0r9s5xuj 10 .010 71.5 1.2 0 .01 .12 8

1 02577v815yp77 1 .220 4,909.0 244 1 .13 .13 7

1 4phvdvx32a3mf 10 .020 162.4 3.3 1 .02 .18 6

1 bxywuzvtp6wjg 1 .400 4,753.0 166 0 .24 .24 5

1 3wrrjm9qtr2my 1 .840 1,232.0 56 2 .39 .39 4

1 644jqx2hk7qg0 1 .600 .0 0 1 .6 .6 3

1 12a2xbmwn5v6z 1 1.720 881,392.0 2643 3796 .71 .71 2

1 f6cz4n8y72xdc 1 2.510 914,468.0 2673 1 1.5 1.5 1

ORACLE :Comparing parameter files from two different databases.

6 years ago by Vinod SiramOracle DB Admin

Comparing parameter files from two different databases. In this article we will learn how to compare two parameter files from two different databases. AIM : To make changes on orcl to look like prod we need to follow below procedure Source : Server name … Read More

Protected: Oracle : File System Cleanup

6 years ago by Vinod SiramOracle DB Admin

There is no excerpt because this is a protected post.

Oracle : SQLTREND.sql

6 years ago by Vinod SiramOracle DB Admin

/**********************************************************************
 * File:        sqlhistory.sql
 * Type:        SQL*Plus script
 * Author:      Tim Gorman (Evergreen Database Technologies, Inc.)
 * Date:        29sep08
 *
 * Description:
 *      SQL*Plus script to query the "history" of a specified SQL
 *      statement, using its "SQL ID" across all database instances
 *      in a database, using the AWR repository.  This report is useful
 *      for obtaining an hourly perspective on SQL statements seen in
 *      more aggregated reports.
 *
 * Modifications:
 *      TGorman 29sep08 adapted from the earlier STATSPACK-based
 *                      "sphistory.sql" script
 *********************************************************************/
set echo off
set feedback off timing off verify off pagesize 100 linesize 130 recsep off
set serveroutput on size 1000000 format wrapped trimout on trimspool on
col phv heading "Plan|Hash Value"
col snap_time format a12 truncate heading "Snapshot|Time"
col execs format 999,990 heading "Execs"
col lio_per_exec format 999,999,999,990.00 heading "Avg LIO|Per Exec"
col pio_per_exec format 999,999,999,990.00 heading "Avg PIO|Per Exec"
col cpu_per_exec format 999,999,999,990.00 heading "Avg|CPU (secs)|Per Exec"
col ela_per_exec format 999,999,999,990.00 heading "Avg|Elapsed (secs)|Per Exec"
col sql_text format a64 heading "Text of SQL statement"
clear breaks computes
ttitle off
btitle off

accept V_SQL_ID prompt "Enter the SQL_ID: "
accept V_NBR_DAYS prompt "Enter number of days (backwards from this hour) to report (default: ALL): "

variable v_nbr_days number

spool sqlhistory_&&V_SQL_ID

declare
        cursor get_phv(in_sql_id in varchar2, in_days in integer)
        is
        select  ss.plan_hash_value,
                min(s.begin_interval_time) min_time,
                max(s.begin_interval_time) max_time,
                min(s.snap_id) min_snap,
                max(s.snap_id) max_snap,
                sum(ss.executions_delta) sum_execs,
                sum(ss.disk_reads_delta) sum_disk_reads,
                sum(ss.buffer_gets_delta) sum_buffer_gets,
                sum(ss.cpu_time_delta)/1000000 sum_cpu_time,
                sum(ss.elapsed_time_delta)/1000000 sum_elapsed_time
        from    dba_hist_sqlstat        ss,
                dba_hist_snapshot       s
        where   ss.dbid = s.dbid
        and     ss.instance_number = s.instance_number
        and     ss.snap_id = s.snap_id
        and     ss.sql_id = in_sql_id
        and     ss.executions_delta > 0
        and     s.begin_interval_time >= sysdate-in_days
        group by ss.plan_hash_value
        order by sum_elapsed_time desc;
        --
        cursor get_xplan(in_sql_id in varchar2, in_phv in number)
        is
        select  plan_table_output
        from    table(dbms_xplan.display_awr(in_sql_id, in_phv, null, 'ALL -ALIAS'));
        --
        v_prev_plan_hash_value  number := -1;
        v_text_lines            number := 0;
        v_errcontext            varchar2(100);
        v_errmsg                varchar2(100);
        v_display_sql_text      boolean;
        --
begin
        --
        v_errcontext := 'query NBR_DAYS from DUAL';
        select  decode('&&V_NBR_DAYS','',10,to_number(nvl('&&V_NBR_DAYS','10')))
        into    :v_nbr_days
        from    dual;
        --
        v_errcontext := 'open/fetch get_phv';
        for phv in get_phv('&&V_SQL_ID', :v_nbr_days) loop
                --
                if get_phv%rowcount = 1 then
                        --
                        dbms_output.put_line('+'||
                                rpad('-',12,'-')||
                                rpad('-',10,'-')||
                                rpad('-',10,'-')||
                                rpad('-',12,'-')||
                                rpad('-',15,'-')||
                                rpad('-',15,'-')||
                                rpad('-',12,'-')||
                                rpad('-',12,'-')||'+');
                        dbms_output.put_line('|'||
                                rpad('Plan HV',12,' ')||
                                rpad('Min Snap',10,' ')||
                                rpad('Max Snap',10,' ')||
                                rpad('Execs',12,' ')||
                                rpad('LIO',15,' ')||
                                rpad('PIO',15,' ')||
                                rpad('CPU',12,' ')||
                                rpad('Elapsed',12,' ')||'|');
                        dbms_output.put_line('+'||
                                rpad('-',12,'-')||
                                rpad('-',10,'-')||
                                rpad('-',10,'-')||
                                rpad('-',12,'-')||
                                rpad('-',15,'-')||
                                rpad('-',15,'-')||
                                rpad('-',12,'-')||
                                rpad('-',12,'-')||'+');
                        --
                end if;
                --
                dbms_output.put_line('|'||
                        rpad(trim(to_char(phv.plan_hash_value)),12,' ')||
                        rpad(trim(to_char(phv.min_snap)),10,' ')||
                        rpad(trim(to_char(phv.max_snap)),10,' ')||
                        rpad(trim(to_char(phv.sum_execs,'999,999,990')),12,' ')||
                        rpad(trim(to_char(phv.sum_buffer_gets,'999,999,999,990')),15,' ')||
                        rpad(trim(to_char(phv.sum_disk_reads,'999,999,999,990')),15,' ')||
                        rpad(trim(to_char(phv.sum_cpu_time,'999,990.00')),12,' ')||
                        rpad(trim(to_char(phv.sum_elapsed_time,'999,990.00')),12,' ')||'|');
                --
                v_errcontext := 'fetch/close get_phv';
                --
        end loop;
        dbms_output.put_line('+'||
                rpad('-',12,'-')||
                rpad('-',10,'-')||
                rpad('-',10,'-')||
                rpad('-',12,'-')||
                rpad('-',15,'-')||
                rpad('-',15,'-')||
                rpad('-',12,'-')||
                rpad('-',12,'-')||'+');
        --
        v_errcontext := 'open/fetch get_phv';
        for phv in get_phv('&&V_SQL_ID', :v_nbr_days) loop
                --
                if v_prev_plan_hash_value <> phv.plan_hash_value then
                        --
                        v_prev_plan_hash_value := phv.plan_hash_value;
                        v_display_sql_text := FALSE;
                        --
                        v_text_lines := 0;
                        v_errcontext := 'open/fetch get_xplan';
                        for s in get_xplan('&&V_SQL_ID', phv.plan_hash_value) loop
                                --
                                if v_text_lines = 0 then
                                        dbms_output.put_line('.');
                                        dbms_output.put_line('========== PHV = ' ||
                                                phv.plan_hash_value ||
                                                '==========');
                                        dbms_output.put_line('First seen from "'||
                                                to_char(phv.min_time,'MM/DD/YY HH24:MI:SS') ||
                                                '" (snap #'||phv.min_snap||')');
                                        dbms_output.put_line('Last seen from  "'||
                                                to_char(phv.max_time,'MM/DD/YY HH24:MI:SS') ||
                                                '" (snap #'||phv.max_snap||')');
                                        dbms_output.put_line('.');
                                        dbms_output.put_line(
                                                rpad('Execs',15,' ')||
                                                rpad('LIO',15,' ')||
                                                rpad('PIO',15,' ')||
                                                rpad('CPU',15,' ')||
                                                rpad('Elapsed',15,' '));
                                        dbms_output.put_line(
                                                rpad('=====',15,' ')||
                                                rpad('===',15,' ')||
                                                rpad('===',15,' ')||
                                                rpad('===',15,' ')||
                                                rpad('=======',15,' '));
                                        dbms_output.put_line(
                                                rpad(trim(to_char(phv.sum_execs,'999,999,999,990')),15,' ')||
                                                rpad(trim(to_char(phv.sum_disk_reads,'999,999,999,990')),15,' ')||
                                                rpad(trim(to_char(phv.sum_buffer_gets,'999,999,999,990')),15,' ')||
                                                rpad(trim(to_char(phv.sum_cpu_time,'999,999,990.00')),15,' ')||
                                                rpad(trim(to_char(phv.sum_elapsed_time,'999,999,990.00')),15,' '));
                                        dbms_output.put_line('.');
                                end if;
                                --
                                if v_display_sql_text = FALSE and
                                   s.plan_table_output like 'Plan hash value: %' then
                                        --
                                        v_display_sql_text := TRUE;
                                        --
                                end if;
                                --
                                if v_display_sql_text = TRUE then
                                        --
                                        dbms_output.put_line(s.plan_table_output);
                                        --
                                end if;
                                --
                                v_text_lines := v_text_lines + 1;
                                --
                        end loop;
                        --
                end if;
                --
                v_errcontext := 'fetch/close get_phv';
                --
        end loop;
        --
exception
        when others then
                v_errmsg := sqlerrm;
                raise_application_error(-20000, v_errcontext || ': ' || v_errmsg);
end;
/

break on report
compute sum of execs on report
compute avg of lio_per_exec on report
compute avg of pio_per_exec on report
compute avg of cpu_per_exec on report
compute avg of ela_per_exec on report
ttitle center 'Summary Execution Statistics Over Time'
select  to_char(s.begin_interval_time, 'DD-MON HH24:MI') snap_time,
        ss.executions_delta execs,
        ss.buffer_gets_delta/decode(ss.executions_delta,0,1,ss.executions_delta) lio_per_exec,
        ss.disk_reads_delta/decode(ss.executions_delta,0,1,ss.executions_delta) pio_per_exec,
        (ss.cpu_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) cpu_per_exec,
        (ss.elapsed_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) ela_per_exec
from    dba_hist_snapshot       s,
        dba_hist_sqlstat        ss
where   ss.dbid = s.dbid
and     ss.instance_number = s.instance_number
and     ss.snap_id = s.snap_id
and     ss.sql_id = '&&V_SQL_ID'
and     ss.executions_delta > 0
and     s.begin_interval_time >= sysdate - :v_nbr_days
order by s.snap_id;
clear breaks computes

break on phv skip 1 on report
compute sum of execs on phv
compute avg of lio_per_exec on phv
compute avg of pio_per_exec on phv
compute avg of cpu_per_exec on phv
compute avg of ela_per_exec on phv
ttitle center 'Per-Plan Execution Statistics Over Time'
select  ss.plan_hash_value phv,
        to_char(s.begin_interval_time, 'DD-MON HH24:MI') snap_time,
        ss.executions_delta execs,
        ss.buffer_gets_delta/decode(ss.executions_delta,0,1,ss.executions_delta) lio_per_exec,
        ss.disk_reads_delta/decode(ss.executions_delta,0,1,ss.executions_delta) pio_per_exec,
        (ss.cpu_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) cpu_per_exec,
        (ss.elapsed_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) ela_per_exec
from    dba_hist_snapshot       s,
        dba_hist_sqlstat        ss
where   ss.dbid = s.dbid
and     ss.instance_number = s.instance_number
and     ss.snap_id = s.snap_id
and     ss.sql_id = '&&V_SQL_ID'
and     ss.executions_delta > 0
and     s.begin_interval_time >= sysdate - :v_nbr_days
order by ss.plan_hash_value, s.snap_id;
clear breaks computes

spool off
set verify on echo on feedback on
ttitle off

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/**********************************************************************

* File: sqlhistory.sql

* Type: SQL*Plus script

* Author: Tim Gorman (Evergreen Database Technologies, Inc.)

* Date: 29sep08

* Description:

* SQL*Plus script to query the "history" of a specified SQL

* statement, using its "SQL ID" across all database instances

* in a database, using the AWR repository. This report is useful

* for obtaining an hourly perspective on SQL statements seen in

* more aggregated reports.

* Modifications:

* TGorman 29sep08 adapted from the earlier STATSPACK-based

* "sphistory.sql" script

*********************************************************************/

set echo off

set feedback off timing off verify off pagesize 100 linesize 130 recsep off

set serveroutput on size 1000000 format wrapped trimout on trimspool on

col phv heading "Plan|Hash Value"

col snap_time format a12 truncate heading "Snapshot|Time"

col execs format 999,990 heading "Execs"

col lio_per_exec format 999,999,999,990.00 heading "Avg LIO|Per Exec"

col pio_per_exec format 999,999,999,990.00 heading "Avg PIO|Per Exec"

col cpu_per_exec format 999,999,999,990.00 heading "Avg|CPU (secs)|Per Exec"

col ela_per_exec format 999,999,999,990.00 heading "Avg|Elapsed (secs)|Per Exec"

col sql_text format a64 heading "Text of SQL statement"

clear breaks computes

ttitle off

btitle off

accept V_SQL_ID prompt "Enter the SQL_ID: "

accept V_NBR_DAYS prompt "Enter number of days (backwards from this hour) to report (default: ALL): "

variable v_nbr_days number

spool sqlhistory_&&V_SQL_ID

declare

cursor get_phv(in_sql_id in varchar2, in_days in integer)

select ss.plan_hash_value,

min(s.begin_interval_time) min_time,

max(s.begin_interval_time) max_time,

min(s.snap_id) min_snap,

max(s.snap_id) max_snap,

sum(ss.executions_delta) sum_execs,

sum(ss.disk_reads_delta) sum_disk_reads,

sum(ss.buffer_gets_delta) sum_buffer_gets,

sum(ss.cpu_time_delta)/1000000 sum_cpu_time,

sum(ss.elapsed_time_delta)/1000000 sum_elapsed_time

from dba_hist_sqlstat ss,

dba_hist_snapshot s

where ss.dbid = s.dbid

and ss.instance_number = s.instance_number

and ss.snap_id = s.snap_id

and ss.sql_id = in_sql_id

and ss.executions_delta > 0

and s.begin_interval_time >= sysdate-in_days

group by ss.plan_hash_value

order by sum_elapsed_time desc;

cursor get_xplan(in_sql_id in varchar2, in_phv in number)

select plan_table_output

from table(dbms_xplan.display_awr(in_sql_id, in_phv, null, 'ALL -ALIAS'));

v_prev_plan_hash_value number := -1;

v_text_lines number := 0;

v_errcontext varchar2(100);

v_errmsg varchar2(100);

v_display_sql_text boolean;

begin

v_errcontext := 'query NBR_DAYS from DUAL';

select decode('&&V_NBR_DAYS','',10,to_number(nvl('&&V_NBR_DAYS','10')))

into :v_nbr_days

from dual;

v_errcontext := 'open/fetch get_phv';

for phv in get_phv('&&V_SQL_ID', :v_nbr_days) loop

if get_phv%rowcount = 1 then

dbms_output.put_line('+'||

rpad('-',12,'-')||

rpad('-',10,'-')||

rpad('-',12,'-')||

rpad('-',15,'-')||

rpad('-',12,'-')||

rpad('-',12,'-')||'+');

dbms_output.put_line('|'||

rpad('Plan HV',12,' ')||

rpad('Min Snap',10,' ')||

rpad('Max Snap',10,' ')||

rpad('Execs',12,' ')||

rpad('LIO',15,' ')||

rpad('PIO',15,' ')||

rpad('CPU',12,' ')||

rpad('Elapsed',12,' ')||'|');

dbms_output.put_line('+'||

rpad('-',12,'-')||

rpad('-',10,'-')||

rpad('-',12,'-')||

rpad('-',15,'-')||

rpad('-',12,'-')||

rpad('-',12,'-')||'+');

end if;

dbms_output.put_line('|'||

rpad(trim(to_char(phv.plan_hash_value)),12,' ')||

rpad(trim(to_char(phv.min_snap)),10,' ')||

rpad(trim(to_char(phv.max_snap)),10,' ')||

rpad(trim(to_char(phv.sum_execs,'999,999,990')),12,' ')||

rpad(trim(to_char(phv.sum_buffer_gets,'999,999,999,990')),15,' ')||

rpad(trim(to_char(phv.sum_disk_reads,'999,999,999,990')),15,' ')||

rpad(trim(to_char(phv.sum_cpu_time,'999,990.00')),12,' ')||

rpad(trim(to_char(phv.sum_elapsed_time,'999,990.00')),12,' ')||'|');

v_errcontext := 'fetch/close get_phv';

end loop;

dbms_output.put_line('+'||

rpad('-',12,'-')||

rpad('-',10,'-')||

rpad('-',12,'-')||

rpad('-',15,'-')||

rpad('-',12,'-')||

rpad('-',12,'-')||'+');

v_errcontext := 'open/fetch get_phv';

for phv in get_phv('&&V_SQL_ID', :v_nbr_days) loop

if v_prev_plan_hash_value <> phv.plan_hash_value then

v_prev_plan_hash_value := phv.plan_hash_value;

v_display_sql_text := FALSE;

v_text_lines := 0;

v_errcontext := 'open/fetch get_xplan';

for s in get_xplan('&&V_SQL_ID', phv.plan_hash_value) loop

if v_text_lines = 0 then

dbms_output.put_line('.');

dbms_output.put_line('========== PHV = ' ||

phv.plan_hash_value ||

'==========');

dbms_output.put_line('First seen from "'||

to_char(phv.min_time,'MM/DD/YY HH24:MI:SS') ||

'" (snap #'||phv.min_snap||')');

dbms_output.put_line('Last seen from "'||

to_char(phv.max_time,'MM/DD/YY HH24:MI:SS') ||

'" (snap #'||phv.max_snap||')');

dbms_output.put_line('.');

dbms_output.put_line(

rpad('Execs',15,' ')||

rpad('LIO',15,' ')||

rpad('PIO',15,' ')||

rpad('CPU',15,' ')||

rpad('Elapsed',15,' '));

dbms_output.put_line(

rpad('=====',15,' ')||

rpad('===',15,' ')||

rpad('=======',15,' '));

dbms_output.put_line(

rpad(trim(to_char(phv.sum_execs,'999,999,999,990')),15,' ')||

rpad(trim(to_char(phv.sum_disk_reads,'999,999,999,990')),15,' ')||

rpad(trim(to_char(phv.sum_buffer_gets,'999,999,999,990')),15,' ')||

rpad(trim(to_char(phv.sum_cpu_time,'999,999,990.00')),15,' ')||

rpad(trim(to_char(phv.sum_elapsed_time,'999,999,990.00')),15,' '));

dbms_output.put_line('.');

end if;

if v_display_sql_text = FALSE and

s.plan_table_output like 'Plan hash value: %' then

v_display_sql_text := TRUE;

end if;

if v_display_sql_text = TRUE then

dbms_output.put_line(s.plan_table_output);

end if;

v_text_lines := v_text_lines + 1;

end loop;

end if;

v_errcontext := 'fetch/close get_phv';

end loop;

exception

when others then

v_errmsg := sqlerrm;

raise_application_error(-20000, v_errcontext || ': ' || v_errmsg);

end;

break on report

compute sum of execs on report

compute avg of lio_per_exec on report

compute avg of pio_per_exec on report

compute avg of cpu_per_exec on report

compute avg of ela_per_exec on report

ttitle center 'Summary Execution Statistics Over Time'

select to_char(s.begin_interval_time, 'DD-MON HH24:MI') snap_time,

ss.executions_delta execs,

ss.buffer_gets_delta/decode(ss.executions_delta,0,1,ss.executions_delta) lio_per_exec,

ss.disk_reads_delta/decode(ss.executions_delta,0,1,ss.executions_delta) pio_per_exec,

(ss.cpu_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) cpu_per_exec,

(ss.elapsed_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) ela_per_exec

from dba_hist_snapshot s,

dba_hist_sqlstat ss

where ss.dbid = s.dbid

and ss.instance_number = s.instance_number

and ss.snap_id = s.snap_id

and ss.sql_id = '&&V_SQL_ID'

and ss.executions_delta > 0

and s.begin_interval_time >= sysdate - :v_nbr_days

order by s.snap_id;

clear breaks computes

break on phv skip 1 on report

compute sum of execs on phv

compute avg of lio_per_exec on phv

compute avg of pio_per_exec on phv

compute avg of cpu_per_exec on phv

compute avg of ela_per_exec on phv

ttitle center 'Per-Plan Execution Statistics Over Time'

select ss.plan_hash_value phv,

to_char(s.begin_interval_time, 'DD-MON HH24:MI') snap_time,

ss.executions_delta execs,

ss.buffer_gets_delta/decode(ss.executions_delta,0,1,ss.executions_delta) lio_per_exec,

ss.disk_reads_delta/decode(ss.executions_delta,0,1,ss.executions_delta) pio_per_exec,

(ss.cpu_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) cpu_per_exec,

(ss.elapsed_time_delta/1000000)/decode(ss.executions_delta,0,1,ss.executions_delta) ela_per_exec

from dba_hist_snapshot s,

dba_hist_sqlstat ss

where ss.dbid = s.dbid

and ss.instance_number = s.instance_number

and ss.snap_id = s.snap_id

and ss.sql_id = '&&V_SQL_ID'

and ss.executions_delta > 0

and s.begin_interval_time >= sysdate - :v_nbr_days

order by ss.plan_hash_value, s.snap_id;

clear breaks computes

spool off

set verify on echo on feedback on

ttitle off

DIFFERENCE BETWEEN ORACLE AND MySQL -07

6 years ago by Vinod SiramDifference Between Oracle and MySQL

DIFFERENCE BETWEEN ORACLE AND MySQL -07 Please refer my previous articles. Oracle vs MySQL DBA Checklist/Tasks(Article -06) Differences between Oracle and MySQL SNO ORACLE MySQL 1 In Oracle we have different ways of backup like Logical Backup and Physical backups In MySQL also we have… Read More