Si la dernière date à laquelle le job a tourné est antérieure à la dernière date de démarrage de la base c’est que l’arrêt s’est mal passé.
Dans ce cas en effet Oracle arrête tous les ordonnancements. La solution est de faire un arrêt relance propre de la base
Les scripts se basent sur l’activité AWR pour faire leur diagnostique, en toute logique leur utilisation est soumise à licence.
set serveroutput on
DECLARE
tsn VARCHAR2(40);
tss NUMBER(10);
aex BOOLEAN;
unr NUMBER(5);
rgt BOOLEAN;
retval BOOLEAN;
BEGIN
retval := dbms_undo_adv.undo_info(tsn, tss, aex, unr, rgt);
dbms_output.put_line('Undo Tablespace Is: ' || tsn);
dbms_output.put_line('Undo Tablespace Size Is: ' || TO_CHAR(tss));
IF aex THEN
dbms_output.put_line('Undo Autoextend Is Set To: TRUE');
ELSE
dbms_output.put_line('Undo Autoextend Is Set To: FALSE');
END IF;
dbms_output.put_line('Undo Retention Is: ' || TO_CHAR(unr));
IF rgt THEN
dbms_output.put_line('Undo Guarantee Is Set To: TRUE');
ELSE
dbms_output.put_line('Undo Guarantee Is Set To: FALSE');
END IF;
END;
/
Résultat
Undo Tablespace Is: UNDOTBS1
Undo Tablespace Size Is: 32768
Undo Autoextend Is Set To: TRUE
Undo Retention Is: 900
Undo Guarantee Is Set To: FALSE
Estimer le meilleur paramétrage pour “undo_retention” Entre 2 dates
SELECT dbms_undo_adv.best_possible_retention(SYSDATE-1/24, SYSDATE)
FROM dual;
En général
SELECT dbms_undo_adv.best_possible_retention
FROM dual;
Entre 2 snapshots AWR
SELECT dbms_undo_adv.best_possible_retention(10, 20)
FROM dual;
Pour voir quelle catégorie d’outlines est utilisée au niveau instance il suffit de suivre La note metalink (internal only, you don’t have access) ou de retrouver ses diverses transcription oveurzeunaitte comme par exemple sur le site Oracle Guy ou le blog El Caro histoire de rester sur Blogger.
Donc que est l’intérêt de ce post ??? Le français de France allons, pour les dba qui se vrillent l’œil dès que la Perfide Albion vient envahir leur champ de vision
Alors comment qu’on fait Madame ?
Simplissime, on sort le code hexa d’une partie de la SGA (ou de l’UGA si des fois on fait ça au niveau session) L’enfance de l’art non ?
Les Instructions qui vont bien :
SQL> oradebug setmypid
SQL> oradebug dumpvar sga sgauso
les résultats sont pour le moins cocaces
qolprm sgauso_ [20014F44, 20014F68) = 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000 00000000
Qui signifie : “FALSE” … Oui c’est pas forcément évident
qolprm sgauso_ [8001304C, 80013070) = 00000001 00074445 4641554C 54000000 ...
Qui signifie : “DEFAULT” … Sachant que DEFAULT fait 7 lettres et qu’en hexadécimal DEFAULT s’écrit 4445 4641554c 54, on commence à comprendre, on la refait doucement :
qolprm sgauso_ [8001304C, 80013070) = 00000001 00074445 4641554C 54000000 ...
7 D E F A U L T
OK ?
Le package dbms_metadata existe depuis la version 9i et permet de regénerer les commandes DDL relatives aux objets ORACLE … Maintenant, pour l’utilisation et la liste des focntion au choix : RTFM ou RTFDB (DB pour Donald B le bien connu copiste en chef de la documentation Oracle) ce qui, au final revient à peu près au même. Cependant, souvent sa sortie contient des informations dont on se passerait bien, comme la gestion des extents ou autres alors qu’on utilise la plupart du temps les paramètres par défaut du tablespace.
exec dbms_metadata.set_transform_param( DBMS_METADATA.SESSION_TRANSFORM, 'SQLTERMINATOR', TRUE );
exec dbms_metadata.set_transform_param( DBMS_METADATA.SESSION_TRANSFORM, 'STORAGE', false);
select dbms_metadata.get_ddl('TABLE','WRH$_SQL_PLAN',USER) from sys.dual ;
DBMS_METADATA.GET_DDL('TABLE','WRH$_SQL_PLAN',USER)
--------------------------------------------------------------------------
CREATE TABLE "SYS"."WRH$_SQL_PLAN"
( "SNAP_ID" NUMBER,
"DBID" NUMBER NOT NULL ENABLE,
[...]
"OTHER_XML" CLOB,
CONSTRAINT "WRH$_SQL_PLAN_PK" PRIMARY KEY ("DBID", "SQL_ID", "PLAN_HASH_VALUE", "ID")
USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "SYSAUX" ENABLE
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "SYSAUX"
LOB ("OTHER_XML") STORE AS BASICFILE (
TABLESPACE "SYSAUX" ENABLE STORAGE IN ROW CHUNK 8192 RETENTION
NOCACHE LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT))
exec dbms_metadata.set_transform_param( DBMS_METADATA.SESSION_TRANSFORM, 'SQLTERMINATOR', TRUE ); PL/SQL procedure successfully completed. exec dbms_metadata.set_transform_param( DBMS_METADATA.SESSION_TRANSFORM, 'STORAGE', false); PL/SQL procedure successfully completed.
select dbms_metadata.get_ddl('TABLE','WRH$_SQL_PLAN',USER) from sys.dual ;
DBMS_METADATA.GET_DDL('TABLE','WRH$_SQL_PLAN',USER)
--------------------------------------------------------------------------
CREATE TABLE "SYS"."WRH$_SQL_PLAN"
( "SNAP_ID" NUMBER,
"DBID" NUMBER NOT NULL ENABLE,
[...]
"OTHER_XML" CLOB,
CONSTRAINT "WRH$_SQL_PLAN_PK" PRIMARY KEY ("DBID", "SQL_ID", "PLAN_HASH_VALUE", "ID")
USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
TABLESPACE "SYSAUX" ENABLE
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
NOCOMPRESS LOGGING
TABLESPACE "SYSAUX"
LOB ("OTHER_XML") STORE AS BASICFILE (
TABLESPACE "SYSAUX" ENABLE STORAGE IN ROW CHUNK 8192 RETENTION
NOCACHE LOGGING ) ;
tar cpf "-" <source> | gzip -c9 | ssh <utilisateur>@<serveur distant> 'gzip -cd | tar xpf "-"'
Putty est un client multiprotocole pour windows diponible sur le site putty.org. La sauvegarde de sa configuration n’est plus très facile depuis qu’il ne s’appuie plus sur un fichier de configuration mais sur la base de registre de Windows. Le script suivant permet la sauvegarde des la configuration putty dans un fichier reg
@ECHO OFF
regedit /s putty.reg
regedit /s puttyrnd.reg
start /w putty.exe
regedit /ea new.reg HKEY_CURRENT_USERSoftwareSimonTathamPuTTY
copy new.reg putty.reg
del new.reg
regedit /s puttydel.reg
Le script a été trouvé dans la doc PuTTY et utilise deux fichiers de paramètre puttyrnd.reg et puttydel.reg. leur utilisation est expliquée sur le site de la doc
export SRVM_TRACE=true
unset SRVM_TRACE
#!/bin/ksh
QSTAT=-u
AWK=/usr/bin/nawk
# +----------------------------------------------------------------------------+
# | TABLE HEADER |
# +----------------------------------------------------------------------------+
$AWK
'BEGIN {printf "%-45s %-10s %-18sn", "HA Resource", "Target", "State";
printf "%-45s %-10s %-18sn", "-----------", "------", "-----";}'
# +----------------------------------------------------------------------------+
# | TABLE BODY |
# +----------------------------------------------------------------------------+
$ORA_CRS_HOME/bin/crs_stat $QSTAT | $AWK
'BEGIN { FS="="; state = 0; }
$1~/NAME/ {appname = $2; state=1;}
$1~/TARGET/ && state == 1 {apptarget = $2; state=2;}
$1~/STATE/ && state == 2 {appstate = $2; state=3;}
state == 3 {printf "%-45s %-10s %-18sn", appname, apptarget, appstate; state=0;}
state == 0 {next;}'
Résultat :
HA Resource Target State
----------- ------ -----
ora.TESTRAC.TESTRAC1.inst ONLINE ONLINE on rac01
ora.TESTRAC.TESTRAC2.inst ONLINE ONLINE on rac02
ora.TESTRAC.db ONLINE ONLINE on rac02
ora.TOTO.TOTO1.inst ONLINE ONLINE on rac01
ora.TOTO.TOTO2.inst ONLINE ONLINE on rac02
ora.TOTO.db ONLINE ONLINE on rac02
ora.rac01.ASM1.asm ONLINE ONLINE on rac01
ora.rac01.ASM_LIST_rac01.lsnr ONLINE ONLINE on rac01
ora.rac01.gsd ONLINE ONLINE on rac01
ora.rac01.ons ONLINE ONLINE on rac01
ora.rac01.vip ONLINE ONLINE on rac01
ora.rac02.ASM2.asm ONLINE ONLINE on rac02
ora.rac02.ASM_LIST_rac02.lsnr ONLINE ONLINE on rac02
ora.rac02.gsd ONLINE ONLINE on rac02
ora.rac02.ons ONLINE OFFLINE
ora.rac02.vip ONLINE ONLINE on rac02
Le script original auquel il faut passer en paramètre le nom de la ressource de laquelle on souhaite avoir l’état :
#!/bin/ksh
# +----------------------------------------------------------------------------+
# | Jeffrey M. Hunter |
# | jhunter@idevelopment.info |
# | www.idevelopment.info |
# |----------------------------------------------------------------------------|
# | Copyright (c) 1998-2008 Jeffrey M. Hunter. All rights reserved. |
# |----------------------------------------------------------------------------|
# | DATABASE : Oracle |
# | FILE : rac_crs_stat |
# | CLASS : UNIX Shell Scripts |
# | PURPOSE : This KSH script will query all CRS resources using the crs_stat |
# | script. The report will be a formatted version of the |
# | crs_stat -t command, but in tabular form with resource name |
# | and status. Filtering options are available by passing in a |
# | single string parameter to this script. This argument will be |
# | used to limit the output to HA resources whose names match |
# | that string. |
# | USAGE : rac_crs_stat.ksh [RESOURCE_KEY] |
# | NOTE : This script requires the environment $ORA_CRS_HOME to be set to |
# | your CRS installation. |
# | NOTE : As with any code, ensure to test this script in a development |
# | environment before attempting to run it in production. |
# +----------------------------------------------------------------------------+
# +----------------------------------------------------------------------------+
# | GLOBAL VARIABLES |
# +----------------------------------------------------------------------------+
RSC_KEY=$1
QSTAT=-u
AWK=/usr/bin/awk
# +----------------------------------------------------------------------------+
# | TABLE HEADER |
# +----------------------------------------------------------------------------+
$AWK
'BEGIN {printf "%-45s %-10s %-18sn", "HA Resource", "Target", "State";
printf "%-45s %-10s %-18sn", "-----------", "------", "-----";}'
# +----------------------------------------------------------------------------+
# | TABLE BODY |
# +----------------------------------------------------------------------------+
$ORA_CRS_HOME/bin/crs_stat $QSTAT | $AWK
'BEGIN { FS="="; state = 0; }
$1~/NAME/ && $2~/'$RSC_KEY'/ {appname = $2; state=1};
state == 0 {next;}
$1~/TARGET/ && state == 1 {apptarget = $2; state=2;}
$1~/STATE/ && state == 2 {appstate = $2; state=3;}
state == 3 {printf "%-45s %-10s %-18sn", appname, apptarget, appstate; state=0;}'
La table x$kvit donne une liste de paramètres dynamiques utilisés au moment du select.
La version 10g remonte la liste suivante :
select KVITTAG
, KVITDSC
, KVITVAL
from x$kvit
/
KVITTAG KVITDSC KVITVAL
-------------------- ---------------------------------------------------------------- ----------
ksbcpu number of logical CPUs in the system used by Oracle 2
ksbcpucore number of physical CPU cores in the system used by Oracle 0
ksbcpusocket number of physical CPU sockets in the system used by Oracle 0
ksbcpu_hwm high water mark of number of CPUs used by Oracle 2
ksbcpucore_hwm high water mark of number of CPU cores on system 0
ksbcpusocket_hwm high water mark of number of CPU sockets on system 0
ksbcpu_actual number of available CPUs in the system 2
ksbcpu_dr CPU dynamic reconfiguration supported 1
kcbnbh number of buffers 136551
kcbldq large dirty queue if kcbclw reaches this 25
kcbfsp Max percentage of LRU list foreground can scan for free 40
kcbcln Initial percentage of LRU list to keep clean 2
kcbnbf number buffer objects 750
kcbwst Flag that indicates recovery or db suspension 0
kcteln Error Log Number for thread open 0
kcvgcw SGA: opcode for checkpoint cross-instance call 0
kcvgcw SGA:opcode for pq checkpoint cross-instance call 0
La version 9i remonte la liste suivante :
KVITTAG KVITDSC KVITVAL
-------------------- ---------------------------------------------------------------- ----------
kcbnbh number of buffers 381120
kcbldq large dirty queue if kcbclw reaches this 25
kcbdsp Max percentage of LRU list dbwriter can scan for dirty 25
kcbfsp Max percentage of LRU list foreground can scan for free 40
kcbnbf number buffer objects 5000
kcbwst Flag that indicates recovery or db suspension 0
kcteln Error Log Number for thread open 0
kcvgcw SGA: opcode for checkpoint cross-instance call 0
La variable statistics level permet des stocker des statistiques dans certaines vues.
La requête suivante permet de voir quelle vue est impactée, à quel niveau de statistique et si le calcul de la statistique peut être modifié au niveau session
select decode(ACTIVATION_LEVEL,1,'Typical','All') "A Level"
, Name
, decode(SESSION_CHANGEABLE,1,'Ok',' -') "Modif"
, decode(SESSION_STATUS,1,'On',' -') "Sess"
, decode(SYSTEM_STATUS,1,'On',' -') "Sys"
, VIEW_NAME
from x$prmsltyx
order by ACTIVATION_LEVEL
/
En 11gR2 on obtient
A Level NAME Mo Se Sy VIEW_NAME
------- ---------------------------------------------------------------- -- -- -- -------------------------
Typical Buffer Cache Advice - On On V$DB_CACHE_ADVICE
Typical V$IOSTAT_* statistics - On On
Typical Timed Statistics Ok On On
Typical MTTR Advice - On On V$MTTR_TARGET_ADVICE
Typical Adaptive Thresholds Enabled - On On
Typical Segment Level Statistics - On On V$SEGSTAT
Typical PGA Advice - On On V$PGA_TARGET_ADVICE
Typical Shared Pool Advice - On On V$SHARED_POOL_ADVICE
Typical Modification Monitoring - On On
Typical Longops Statistics - On On V$SESSION_LONGOPS
Typical Bind Data Capture - On On V$SQL_BIND_CAPTURE
Typical Ultrafast Latch Statistics - On On
Typical Threshold-based Alerts - On On
Typical Global Cache Statistics - On On
Typical Active Session History - On On V$ACTIVE_SESSION_HISTORY
Typical Undo Advisor, Alerts and Fast Ramp up - On On V$UNDOSTAT
Typical Streams Pool Advice - On On V$STREAMS_POOL_ADVICE
Typical Time Model Events Ok On On V$SESS_TIME_MODEL
Typical Plan Execution Sampling Ok On On V$ACTIVE_SESSION_HISTORY
Typical Automated Maintenance Tasks - On On
Typical SQL Monitoring Ok On On V$SQL_MONITORING
All Plan Execution Statistics Ok - - V$SQL_PLAN_STATISTICS
All Timed OS Statistics Ok - -
En 10g on obtient
A Level NAME Mo Se Sy VIEW_NAME
------- ---------------------------------------- -- -- -- ------------------------------
Typical Buffer Cache Advice - On On V$DB_CACHE_ADVICE
Typical Streams Pool Advice - On On V$STREAMS_POOL_ADVICE
Typical Timed Statistics Ok On On
Typical MTTR Advice - On On V$MTTR_TARGET_ADVICE
Typical Undo Advisor, Alerts and Fast Ramp up - On On V$UNDOSTAT
Typical Segment Level Statistics - On On V$SEGSTAT
Typical PGA Advice - On On V$PGA_TARGET_ADVICE
Typical Shared Pool Advice - On On V$SHARED_POOL_ADVICE
Typical Modification Monitoring - On On
Typical Longops Statistics - On On V$SESSION_LONGOPS
Typical Bind Data Capture - On On V$SQL_BIND_CAPTURE
Typical Ultrafast Latch Statistics - On On
Typical Threshold-based Alerts - On On
Typical Global Cache Statistics - On On
Typical Active Session History - On On V$ACTIVE_SESSION_HISTORY
All Plan Execution Statistics Ok - - V$SQL_PLAN_STATISTICS
All Timed OS Statistics Ok - -
En 9i on obtient
A Level NAME Mo Se Sy VIEW_NAME
------- ------------------------------ -- -- -- ------------------------------
Typical Buffer Cache Advice - On On V$DB_CACHE_ADVICE
Typical MTTR Advice - On On V$MTTR_TARGET_ADVICE
Typical Timed Statistics Ok On On
Typical PGA Advice - On On V$PGA_TARGET_ADVICE
Typical Shared Pool Advice - On On V$SHARED_POOL_ADVICE
Typical Segment Level Statistics - On On V$SEGSTAT
All Timed OS Statistics Ok - -
All Plan Execution Statistics Ok - - V$SQL_PLAN_STATISTICS