Performance Issue Tracking In Database Level.
Hi All,
I am sorry, actually i dont know whether this is the right question to ask in this forum. Below is my question.
We are working on Oracle 10g and are supposed to moved to 11G. My question is which text book will be best one for getting knowledge regarding database performance issue in broad level and monitoring and resolving the issues. Please suggest.
Edited by: 930254 on Aug 22, 2012 7:56 AM
Troubleshooting oracle performance ( Apres) is one book I found very useful along with the Oracle documentation (http://www.oracle.com/pls/db112/to_toc?pathname=server.112/e10822/toc.htm).
btw, please mark the thread as 'answered', if you feel you got your question answered. This will save the time of others who search for open questions to answer.
regards,
CSM
Similar Messages
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Tool for diagnosing performance issues in oracle database
Is there any tool to diagnose performance issues in queries and stored procedures in oracle similar to sql profiler for sql server
Thanksyou can use oem oracle enterprise manager to diagnose and monitor database .
Chapter 10: Monitoring and Tuning the Database(refer the link , oracle obe series, step by step procedures with screenshot presentation)
This chapter introduces you to some of the monitoring and tuning operations as performed through Enterprise Manager.
http://www.oracle.com/technology/obe/2day_dba/monitoring/monitoring.htm
refer: Monitoring and Tuning the Database
http://download.oracle.com/docs/cd/B14117_01/server.101/b10742/montune.htm
hope, this will helps you.
Edited by: rajeysh on Jul 14, 2010 9:28 PM -
Severe performance issues in production database
Hi Experts,
we have configured RMAN in our production database recently using some 3 party tool COMMVAULT.
Problem is just 47 GB database taking around 6 hrs of time to complted the bakcup job. Please let me know what could be the reason.
Further to this issues i found out some of few things, our application vendor commissioned this database server and it seems that they done some changes in TIMEZONE settings.
when i query against some of few dictionary tables for example dba_schedular_jobs i am getting the following error.
ORA-01882: timezone region %s not found
when ever i connect the database , the connection itself is very slow and suffering severe performance issues in my production database.
You help would be much appreciated.
Regards,
SalaiHi,
also let us know if you use asm or local file system for datafiles.
Your backup strategy will also be helpful:
Do you make compressed backups?
Full or incremental?
To where do you backup the database? To the local filesystem, SAN Volume, Offsite Storage, Tape storage?
Is there any other jobs running while the RMAN job is running?
Please post the stats that you have gathered over the time period when the backup is running.
Thanks. -
Performance issue after upgrading database 9i (9.2.0.5.0) to 10g (10.2.5.0)
Hi,
recently we have upraded our database from 9.2.0.5.0 to 10.2.5.0. After the upgrading of the database some of our SQL-statements, who gather data and fill it in an empty tabless,
shows a really bad performance in the new database version. We already have checked the explain plan it remains the same in both versions (full table scans on the corresponding tables)
E.g. a query running in the 9i database needs 17 minutes for completion in the 10g version it needs 15 hours.
We have checked the running session and have seen that the read of database blocks of the corresponding tables needs immense more time in the 10g version.
Are there any oracle parameter, hidden features we can adjust in 10g in order to get the same performance as in 9i?
thanks in advance
Here is this example with the above mentioned different response time:
(the object edv_belasgv_3_jahre is a view over 3 tables as an union all, each table has approximately 1 million records)
/* Formatted on 06.09.2012 19:09:08 (QP5 v5.136.908.31019) */
INSERT INTO mv_edv_belasgv_branche
SELECT gesellschaft,
erscheinungsdatum,
buchungsdatum,
code,
SUM (rechnungsnetto) AS rechnungsnetto,
SUM (rechnungsbetrag) AS rechnungsbetrag,
SUM (mehrwertsteuer) AS mehrwertsteuer
FROM (SELECT gesellschaft,
erscheinungsdatum,
buchungsdatum,
rechnungsnetto,
rechnungsbetrag,
mehrwertsteuer,
DECODE (
(SELECT branche1
FROM anzedv.edv_stammdaten t2
WHERE t1.gesellschaft = t2.gesellschaft
AND t1.kundennummer_sap = t2.kundennummer_sap
AND t1.unterkonto = t2.unterkonto),
NULL,
NULL,
DECODE (
(SELECT DISTINCT branche
FROM (SELECT *
FROM anzedv.edv_zuordnung_branche_rubrik
WHERE branche IS NOT NULL)
WHERE (SELECT branche1
FROM anzedv.edv_stammdaten t2
WHERE t1.gesellschaft = t2.gesellschaft
AND t1.kundennummer_sap =
t2.kundennummer_sap
AND t1.unterkonto = t2.unterkonto) LIKE
branche || '%'),
NULL,
'sonstige',
(SELECT DISTINCT branche
FROM (SELECT *
FROM anzedv.edv_zuordnung_branche_rubrik
WHERE branche IS NOT NULL)
WHERE (SELECT branche1
FROM anzedv.edv_stammdaten t2
WHERE t1.gesellschaft = t2.gesellschaft
AND t1.kundennummer_sap =
t2.kundennummer_sap
AND t1.unterkonto = t2.unterkonto) LIKE
branche || '%')))
AS code
FROM edv_belasgv_3_jahre t1
WHERE gesellschaft IN ('T', 'U')
AND (satzart = 'B'
OR satzart = 'G'
AND gegenkonto_art IN (5000, 5001, 7900)))
GROUP BY gesellschaft,
erscheinungsdatum,
buchungsdatum,
codeThere is no 10.2.5.0 version - I assume you mean 10.2.0.5.
Pl see these threads on how to post a tuning request (pl post explain plans from both databases)
When your query takes too long ...
HOW TO: Post a SQL statement tuning request - template posting
Pl also compare the init.ora parameters between the old and new database and post any differences here. Have statistics been gathered on the new database ?
Pl see these MOS Docs
TROUBLESHOOTING: Server Upgrade Results in Slow Query Performance [ID 160089.1]
Query Performance Degradation - Upgrade Related - Recommended Actions [ID 745216.1]
Tips for avoiding upgrade related query problems [ID 167086.1]
HTH
Srini -
Performance Issues on Oracle Database Lite 10.3.0.3
Hello,
we have a big problem with one of our customers. He uses Oracle Database Lite in the standalone version. There are about 600 clients running a project with about 20 Publication Items. The customer works in the logistics field, so the Main time where nearly all clients want to sync and get their tours is from 02 AM to 05 AM, so that is the time with the most traffic.
Everything went well before last week. Suddenly the compose cycle needs (at least between that hours) about ten times longer than before. Normally we had about 40 - 80 seconds, now we have about 300 - 500 average with max values from over 1200 seconds.
Therefore we have a lot of conflicts and Disconnects on the clients. It is sometimes that bad, that nearly no client can sync successfully.
We checked our Selects in the publication Items, all are very fast and look good in the explain plan, so that shouldnt be the problem.
The installation is nearly in the Default state as oracle does when you install Oracle Lite. Are there any standard settings we can change? Does anyone had the same problem already?
The Machine is a Windows Server 2003 with an Intel Xeon CPU E7-4820 and 4 GB of RAM.
Of course our customer gets a lot of trouble because of that and we have to improve and fix that as fast as we can.
Any recommendation or opinions are very welcome.
If I have to give more Info about somewhat please feel free to ask, I will give it as fast as possible.
Thanks in advance
HolgerHey,
many thanks for your proposals. The MGP runs every minute like the default settings are, because our application is a time sensitive. The data have to be very fast on the clients in the nights and thex are only a few minutes before available. I think the parameters are important in environemnts where the mgps runs only after a few minutes?
Let me summarize the situation since my las post:
We have days (nights) where everything goes quite well. Mainly that is thrusday and friday. But on the other hand, there are days where everything really is a mess.
The mgp caycles increase and when you look to mobile manager you see 70 clients syncing very very slowly (about 300 - 600 seconds) for just a little bit of data. Then we get the disonnects and the messages in the err.log.
What do you think, is this somehow network related, or ist this a logical problem in the Mobile Server itself?
Like postes earlier, there are 500 clients syncing against a standalone mobile server.
We just couldnt figure out, why the mgp times somehow and sometimes increase that much, that there are these problems.
First we thought, that they sync newly over wireless (GPRS or Edge) and that syncing is that slowly, that everything goes down, but arent sure. Is this possible because of the architecture of the Mobile Server? That a very slow network can slow down the mgps and that does timeouts and all the other stuff?
How many clients can a Standalone Mobile Server normally serve at same time without performance problems. What do you thin about the hardware I wrote? Is it powerful enough? -
BOE Publications performance issue in source database.
Hello all,
I have a set of BO Publications, that run nightly. The source documents are Crystal Reports that runs on Sybase stored procedures. On days when the publication runs for over 20 dynamic recepients, the tempdb in Sybase, set at 1.5GB is filling to over the threshold value and is creating warnings in the database logs. When large datasets are processed by the Crystal Reports, the tempdb tablespace fills up and the publications are failing. This tempdb issue does not occur if the Crystal Reports are run in stand-alone mode.
We monitored the Sybase system while the publications are running, and we can see that separate process ids are created in Sybase for each dynamic recepient, one after another, indicating that report instances are not run in parallel for all dynamic recepient.
Could someone with a better understanding of the BOBJ publications, post comments to help me understand how BOBJ schedules the Crystal Reports ( in parallel or series ) and why the tempdb tables in the database are filled up?
The publications are all set to 'One database fetch per recipient' in the Advanced tab, to prevent the tempdb table from filling too quickly and failing the reports.
RaviCan you run the same query on Physical SQL Server DB and let us know the outcome ?
Thanks, -
Report performance issue in oracle database 10g to 11g
Hi All,
We have one test instance for database 10g where the report is working fine below is the plan for report.
SELECT STATEMENT
VIEW APPS
SORT UNIQUE
UNION-ALL
HASH JOIN
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS FULL ONT.OE_ORDER_LINES_ALL
NESTED LOOPS ANTI
HASH JOIN
TABLE ACCESS BY INDEX ROWID MRP.MRP_GROSS_REQUIREMENTS
INDEX SKIP SCAN MRP.MRP_GROSS_REQUIREMENTS_N2
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
We have one more instance whose database is 11g and the same report is migrated but it is taking too long time to execute the report output. Please advise why it is happening even why the plan is difference.
SELECT STATEMENT
VIEW APPS
SORT UNIQUE
UNION-ALL
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_B_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_TL_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.BOM_STRUCTURES_B
INDEX RANGE SCAN BOM.BOM_STRUCTURES_B_N2
SORT AGGREGATE
INDEX RANGE SCAN BOM.BOM_OPERATIONAL_ROUTINGS_U2
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
SORT AGGREGATE
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT AGGREGATE
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT AGGREGATE
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID MRP.MRP_ASSIGNMENT_SETS
INDEX UNIQUE SCAN MRP.MRP_ASSIGNMENT_SETS_U2
INDEX RANGE SCAN MRP.MRP_SR_ASSIGNMENTS_N3
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID PO.PO_APPROVED_SUPPLIER_LIST
INDEX RANGE SCAN PO.PO_APPROVED_SUPPLIER_LIST_N1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
HASH JOIN
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
TABLE ACCESS FULL ONT.OE_ORDER_LINES_ALL
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_B_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_TL_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
TABLE ACCESS BY INDEX ROWID BOM.BOM_STRUCTURES_B
INDEX RANGE SCAN BOM.BOM_STRUCTURES_B_N2
INDEX RANGE SCAN BOM.BOM_OPERATIONAL_ROUTINGS_U2
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT UNIQUE NOSORT
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID MRP.MRP_ASSIGNMENT_SETS
INDEX UNIQUE SCAN MRP.MRP_ASSIGNMENT_SETS_U2
INDEX RANGE SCAN MRP.MRP_SR_ASSIGNMENTS_N3
SORT UNIQUE NOSORT
TABLE ACCESS BY INDEX ROWID PO.PO_APPROVED_SUPPLIER_LIST
INDEX RANGE SCAN PO.PO_APPROVED_SUPPLIER_LIST_N1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
INDEX RANGE SCAN MRP.MRP_GROSS_REQUIREMENTS_N1
SORT AGGREGATE
INDEX RANGE SCAN MRP.MRP_GROSS_REQUIREMENTS_N1
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
NESTED LOOPS ANTI
HASH JOIN
TABLE ACCESS BY INDEX ROWID MRP.MRP_GROSS_REQUIREMENTS
INDEX SKIP SCAN MRP.MRP_GROSS_REQUIREMENTS_N2
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
}Hi All,
We have one test instance for database 10g where the report is working fine below is the plan for report.
SELECT STATEMENT
VIEW APPS
SORT UNIQUE
UNION-ALL
HASH JOIN
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS FULL ONT.OE_ORDER_LINES_ALL
NESTED LOOPS ANTI
HASH JOIN
TABLE ACCESS BY INDEX ROWID MRP.MRP_GROSS_REQUIREMENTS
INDEX SKIP SCAN MRP.MRP_GROSS_REQUIREMENTS_N2
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
We have one more instance whose database is 11g and the same report is migrated but it is taking too long time to execute the report output. Please advise why it is happening even why the plan is difference.
SELECT STATEMENT
VIEW APPS
SORT UNIQUE
UNION-ALL
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_B_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_TL_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.BOM_STRUCTURES_B
INDEX RANGE SCAN BOM.BOM_STRUCTURES_B_N2
SORT AGGREGATE
INDEX RANGE SCAN BOM.BOM_OPERATIONAL_ROUTINGS_U2
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
SORT AGGREGATE
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT AGGREGATE
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT AGGREGATE
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID MRP.MRP_ASSIGNMENT_SETS
INDEX UNIQUE SCAN MRP.MRP_ASSIGNMENT_SETS_U2
INDEX RANGE SCAN MRP.MRP_SR_ASSIGNMENTS_N3
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID PO.PO_APPROVED_SUPPLIER_LIST
INDEX RANGE SCAN PO.PO_APPROVED_SUPPLIER_LIST_N1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
HASH JOIN
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
TABLE ACCESS FULL ONT.OE_ORDER_LINES_ALL
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_B_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_TL_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
TABLE ACCESS BY INDEX ROWID BOM.BOM_STRUCTURES_B
INDEX RANGE SCAN BOM.BOM_STRUCTURES_B_N2
INDEX RANGE SCAN BOM.BOM_OPERATIONAL_ROUTINGS_U2
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
TABLE ACCESS BY INDEX ROWID BOM.CST_ITEM_COSTS
INDEX UNIQUE SCAN BOM.CST_ITEM_COSTS_U1
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
FILTER
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
NESTED LOOPS
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_TL
INDEX RANGE SCAN QP.QP_LIST_HEADERS_TL_U1
INDEX UNIQUE SCAN QP.QP_LIST_HEADERS_B_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_HEADERS_B
BUFFER SORT
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX SKIP SCAN QP.QP_PRICING_ATTRIBUTES_N11
INDEX UNIQUE SCAN QP.QP_LIST_LINES_PK
TABLE ACCESS BY INDEX ROWID QP.QP_LIST_LINES
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
TABLE ACCESS BY INDEX ROWID QP.QP_PRICING_ATTRIBUTES
INDEX RANGE SCAN QP.QP_PRICING_ATTRIBUTES_N3
SORT UNIQUE NOSORT
NESTED LOOPS
TABLE ACCESS BY INDEX ROWID MRP.MRP_ASSIGNMENT_SETS
INDEX UNIQUE SCAN MRP.MRP_ASSIGNMENT_SETS_U2
INDEX RANGE SCAN MRP.MRP_SR_ASSIGNMENTS_N3
SORT UNIQUE NOSORT
TABLE ACCESS BY INDEX ROWID PO.PO_APPROVED_SUPPLIER_LIST
INDEX RANGE SCAN PO.PO_APPROVED_SUPPLIER_LIST_N1
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
TABLE ACCESS BY INDEX ROWID INV.MTL_ONHAND_QUANTITIES_DETAIL
INDEX RANGE SCAN INV.MTL_ONHAND_QUANTITIES_N6
SORT AGGREGATE
INDEX RANGE SCAN MRP.MRP_GROSS_REQUIREMENTS_N1
SORT AGGREGATE
INDEX RANGE SCAN MRP.MRP_GROSS_REQUIREMENTS_N1
NESTED LOOPS
NESTED LOOPS
NESTED LOOPS
INDEX RANGE SCAN INV.MTL_ITEM_CATEGORIES_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORIES_B
INDEX UNIQUE SCAN INV.MTL_CATEGORIES_B_U1
INDEX UNIQUE SCAN INV.MTL_CATEGORY_SETS_TL_U1
TABLE ACCESS BY INDEX ROWID INV.MTL_CATEGORY_SETS_TL
NESTED LOOPS ANTI
HASH JOIN
TABLE ACCESS BY INDEX ROWID MRP.MRP_GROSS_REQUIREMENTS
INDEX SKIP SCAN MRP.MRP_GROSS_REQUIREMENTS_N2
NESTED LOOPS
NESTED LOOPS
MERGE JOIN CARTESIAN
TABLE ACCESS FULL INV.MTL_PARAMETERS
BUFFER SORT
TABLE ACCESS BY INDEX ROWID APPLSYS.FND_LOOKUP_VALUES
INDEX RANGE SCAN APPLSYS.FND_LOOKUP_VALUES_U2
INDEX RANGE SCAN INV.MTL_SYSTEM_ITEMS_B_XX1
TABLE ACCESS BY INDEX ROWID INV.MTL_SYSTEM_ITEMS_B
TABLE ACCESS BY INDEX ROWID ONT.OE_ORDER_LINES_ALL
INDEX RANGE SCAN ONT.OE_ORDER_LINES_N3
} -
Performance issue with connect by level query
Hi I have a problem with connect by level in oracle.
My table is :
J_USER_CALENDAR
USER_NAME FROM_DATE TO_DATE COMMENTS
Uma Shankar 2-Nov-09 5-Nov-09 Comment1
Veera 11-Nov-09 13-Nov-09 Comment2
Uma Shankar 15-Dec-09 17-Dec-09 Commnet3
Vinod 20-Oct-09 21-Oct-09 Comments4
The above table is the user leave calendar.
Now I need to display the users who are on leave between 01-Nov-2009 to 30-Nov-2009
The output should look like:
USER_NAME FROM_DATE COMMENTS
Uma Shankar 2-Nov-09 Comment1
Uma Shankar 3-Nov-09 Comment1
Uma Shankar 4-Nov-09 Comment1
Uma Shankar 5-Nov-09 Comment1
Veera 11-Nov-09 Comment2
Veera 12-Nov-09 Comment2
Veera 13-Nov-09 Comment2
For this I have tried with following query , but it is taking too long time to execute.
select FROM_DATE,user_name,comments from (SELECT distinct FROM_DATE,user_name ,
comments FROM (SELECT (LEVEL) + FROM_DATE-1 FROM_DATE,TO_DATE, FIRST_NAME||' '|| LAST_NAME
user_name ,COMMENTS FROM J_USER_CALENDAR
where
and J_USER_CALENDAR.IS_DELETED=0
CONNECT BY LEVEL <= TO_DATE - FROM_DATE+1) a )where (FROM_DATE = '01-Nov-2009' or FROM_DATE = '30-Nov-2009'
or FROM_DATE between '01-Nov-2009' and '30-Nov-2009') order by from_Date ,lower(user_name)
Please help me.
Thanks in advance.
Regards,
PhanikanthI have not attempted to analyze your SQL statement.
Here is a test set up:
CREATE TABLE T1(
USERNAME VARCHAR2(30),
FROM_DATE DATE,
TO_DATE DATE,
COMMENTS VARCHAR2(100));
INSERT INTO T1 VALUES ('Uma Shankar', '02-Nov-09','05-Nov-09','Comment1');
INSERT INTO T1 VALUES ('Veera','11-Nov-09','13-Nov-09','Comment2');
INSERT INTO T1 VALUES ('Uma Shankar','15-Dec-09','17-Dec-09','Commnet3');
INSERT INTO T1 VALUES ('Vinod','20-Oct-09','21-Oct-09','Comments4');
INSERT INTO T1 VALUES ('Mo','20-Oct-09','05-NOV-09','Comments4');
COMMIT;Note that I included one additional row, where the person starts their vacation in the previous month and ends in the month of November.
You could approach the problem like this:
Assume that you would like to list all of the days of a particular month:
SELECT
TO_DATE('01-NOV-2009','DD-MON-YYYY')+(ROWNUM-1) MONTH_DAY
FROM
DUAL
CONNECT BY
LEVEL<=ADD_MONTHS(TO_DATE('01-NOV-2009','DD-MON-YYYY'),1)-TO_DATE('01-NOV-2009','DD-MON-YYYY');Note that the above attempts to calculate the number of days in the month of November - if it is known that the month has a particular number of days, 30 for instance, you could rewrite the CONNECT BY clause like this:
CONNECT BY
LEVEL<=30Now, we need to pick up those rows of interest from the table:
SELECT
FROM
T1 T
WHERE
(T.FROM_DATE BETWEEN TO_DATE('01-NOV-2009','DD-MON-YYYY') AND TO_DATE('30-NOV-2009','DD-MON-YYYY')
OR T.TO_DATE BETWEEN TO_DATE('01-NOV-2009','DD-MON-YYYY') AND TO_DATE('30-NOV-2009','DD-MON-YYYY'));
USERNAME FROM_DATE TO_DATE COMMENTS
Uma Shankar 02-NOV-09 05-NOV-09 Comment1
Veera 11-NOV-09 13-NOV-09 Comment2
Mo 20-OCT-09 05-NOV-09 Comments4If we then join the two resultsets, we have the following query:
SELECT
FROM
T1 T,
(SELECT
TO_DATE('01-NOV-2009','DD-MON-YYYY')+(ROWNUM-1) MONTH_DAY
FROM
DUAL
CONNECT BY
LEVEL<=ADD_MONTHS(TO_DATE('01-NOV-2009','DD-MON-YYYY'),1)-TO_DATE('01-NOV-2009','DD-MON-YYYY')) V
WHERE
(T.FROM_DATE BETWEEN TO_DATE('01-NOV-2009','DD-MON-YYYY') AND TO_DATE('30-NOV-2009','DD-MON-YYYY')
OR T.TO_DATE BETWEEN TO_DATE('01-NOV-2009','DD-MON-YYYY') AND TO_DATE('30-NOV-2009','DD-MON-YYYY'))
AND V.MONTH_DAY BETWEEN T.FROM_DATE AND T.TO_DATE
ORDER BY
USERNAME,
MONTH_DAY;
USERNAME FROM_DATE TO_DATE COMMENTS MONTH_DAY
Mo 20-OCT-09 05-NOV-09 Comments4 01-NOV-09
Mo 20-OCT-09 05-NOV-09 Comments4 02-NOV-09
Mo 20-OCT-09 05-NOV-09 Comments4 03-NOV-09
Mo 20-OCT-09 05-NOV-09 Comments4 04-NOV-09
Mo 20-OCT-09 05-NOV-09 Comments4 05-NOV-09
Uma Shankar 02-NOV-09 05-NOV-09 Comment1 02-NOV-09
Uma Shankar 02-NOV-09 05-NOV-09 Comment1 03-NOV-09
Uma Shankar 02-NOV-09 05-NOV-09 Comment1 04-NOV-09
Uma Shankar 02-NOV-09 05-NOV-09 Comment1 05-NOV-09
Veera 11-NOV-09 13-NOV-09 Comment2 11-NOV-09
Veera 11-NOV-09 13-NOV-09 Comment2 12-NOV-09
Veera 11-NOV-09 13-NOV-09 Comment2 13-NOV-09Charles Hooper
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc. -
Performance issue after DB copy
Hello,
I am facing performance issue after doing database copy. Let me explain entire story.
Enviornment is Oracle 10g (10.2.0.4), Operating System is Solaries.
We have one production system with DB sid (PR1) and i have to builded new system using PR1 as PR2, we have done full offline copy from one hardware to another hardware (Hardware is same on PR1 and PR2) and perform rsync command at os level to sync all oracle files at OS level(PR2 is not build using backup/restore or export import method).
Now problem is that
One of query if i am running on PR1 system it is taking only 10-15 seconds, while if i am running same query on PR2 it is taking nearly about 55-60 mins. In initial search i found SGA is very diffrent from PR1 to PR2 then i did change the SGA parameter like PR1 in PR2 after doing changes i am running same query it is taking 6-7 mins, so i got some benifit here, but still i need to tune the query. Query contains 3 tables and all tables having atleast 3-4 indexes.
Can some one help what to tune and what to check?
Thanks,
SinghCheck the explain plan on both systems to see if both instances are trying to do the same thing. This will tell you a lot about what is going on based on physical or logical reads and how long they are taking. You should have the same statistics on both databases if you did a physical copy, but check that too just to make sure. If stats and explain plan are the same, check your hardware. Do you have the same amount of RAM on both systems? Are you using similar storage? If the plan is showing that you are doing a considerable amount of physical I/Os on both it could just be that your physical disk is slower on server two.
-
Performance issue showing read by other session Event
Hi All,
we are having a severe performance issue in my database when we are running batch jobs.
This was a new database(11.2.0.2) and we are testing the performance by running some batch jobs. These batch jobs included some inserts and updates.
I am seeing read by other session in top 5 timed events and cache buffers chains in Latch Miss Sources section.
Please help me to solve this out.
Inst Num Startup Time Release RAC
1 27-Feb-12 09:03 11.2.0.2.0 NO
Platform CPUs Cores Sockets Memory(GB)
Linux x86 64-bit 8 8 8 48.00
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 5605 29-Feb-12 03:00:27 63 4.5
End Snap: 5614 29-Feb-12 12:00:47 63 4.3
Elapsed: 540.32 (mins)
DB Time: 1,774.23 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 1,952M 1,952M Std Block Size: 16K
Shared Pool Size: 1,024M 1,024M Log Buffer: 18,868K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
DB Time(s): 3.3 0.8 0.02 0.05
DB CPU(s): 1.1 0.3 0.01 0.02
Redo size: 55,763.8 13,849.3
Logical reads: 23,906.6 5,937.4
Block changes: 325.7 80.9
Physical reads: 665.6 165.3
Physical writes: 40.4 10.0
User calls: 60.7 15.1
Parses: 10.6 2.6
Hard parses: 1.1 0.3
W/A MB processed: 0.6 0.2
Logons: 0.1 0.0
Executes: 151.2 37.6
Rollbacks: 0.0 0.0
Transactions: 4.0
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.94 Redo NoWait %: 100.00
Buffer Hit %: 97.90 In-memory Sort %: 100.00
Library Hit %: 98.06 Soft Parse %: 90.16
Execute to Parse %: 92.96 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 76.71 % Non-Parse CPU: 98.57
Shared Pool Statistics Begin End
Memory Usage %: 89.38 87.96
% SQL with executions>1: 97.14 95.15
% Memory for SQL w/exec>1: 96.05 92.46
Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avg
wait % DB
Event Waits Time(s) (ms) time Wait Class
db file sequential read 14,092,706 65,613 5 61.6 User I/O
DB CPU 34,819 32.7
read by other session 308,534 1,260 4 1.2 User I/O
direct path read 97,454 987 10 .9 User I/O
db file scattered read 71,870 910 13 .9 User I/O
Host CPU (CPUs: 8 Cores: 8 Sockets: 8)
~~~~~~~~ Load Average
Begin End %User %System %WIO %Idle
0.43 0.36 13.7 0.6 9.7 85.7
Instance CPU
~~~~~~~~~~~~
% of total CPU for Instance: 13.5
% of busy CPU for Instance: 94.2
%DB time waiting for CPU - Resource Mgr: 0.0
Memory Statistics
~~~~~~~~~~~~~~~~~ Begin End
Host Mem (MB): 49,152.0 49,152.0
SGA use (MB): 3,072.0 3,072.0
PGA use (MB): 506.5 629.1
% Host Mem used for SGA+PGA: 7.28 7.53
Time Model Statistics
-> Total time in database user-calls (DB Time): 106453.8s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 105,531.1 99.1
DB CPU 34,818.8 32.7
parse time elapsed 714.7 .7
hard parse elapsed time 684.8 .6
PL/SQL execution elapsed time 161.9 .2
PL/SQL compilation elapsed time 44.2 .0
connection management call elapsed time 16.9 .0
hard parse (sharing criteria) elapsed time 10.2 .0
hard parse (bind mismatch) elapsed time 9.4 .0
sequence load elapsed time 2.9 .0
repeated bind elapsed time 0.5 .0
failed parse elapsed time 0.0 .0
DB time 106,453.8
background elapsed time 1,753.9
background cpu time 61.7
Operating System Statistics
-> *TIME statistic values are diffed.
All others display actual values. End Value is displayed if different
-> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
Statistic Value End Value
BUSY_TIME 3,704,415
IDLE_TIME 22,203,740
IOWAIT_TIME 2,517,864
NICE_TIME 3
SYS_TIME 145,696
USER_TIME 3,557,758
LOAD 0 0
RSRC_MGR_CPU_WAIT_TIME 0
VM_IN_BYTES 358,813,045,760
VM_OUT_BYTES 29,514,830,848
PHYSICAL_MEMORY_BYTES 51,539,607,552
NUM_CPUS 8
NUM_CPU_CORES 8
NUM_CPU_SOCKETS 8
GLOBAL_RECEIVE_SIZE_MAX 4,194,304
GLOBAL_SEND_SIZE_MAX 1,048,586
TCP_RECEIVE_SIZE_DEFAULT 87,380
TCP_RECEIVE_SIZE_MAX 4,194,304
TCP_RECEIVE_SIZE_MIN 4,096
TCP_SEND_SIZE_DEFAULT 16,384
TCP_SEND_SIZE_MAX 4,194,304
TCP_SEND_SIZE_MIN 4,096
Operating System Statistics -
Snap Time Load %busy %user %sys %idle %iowait
29-Feb 03:00:27 0.4 N/A N/A N/A N/A N/A
29-Feb 04:00:35 1.4 11.9 11.2 0.6 88.1 14.3
29-Feb 05:00:41 1.7 13.8 13.2 0.6 86.2 15.8
29-Feb 06:00:48 1.5 14.0 13.5 0.6 86.0 12.3
29-Feb 07:01:00 1.8 16.3 15.8 0.5 83.7 10.4
29-Feb 08:00:12 2.6 23.2 22.5 0.6 76.8 12.6
29-Feb 09:00:26 1.3 16.6 16.0 0.5 83.4 5.7
29-Feb 10:00:33 1.2 13.8 13.3 0.5 86.2 2.0
29-Feb 11:00:43 1.3 14.5 14.0 0.5 85.5 3.8
29-Feb 12:00:47 0.4 4.9 4.2 0.7 95.1 10.6
Foreground Wait Class
-> s - second, ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
-> Captured Time accounts for 97.9% of Total DB time 106,453.79 (s)
-> Total FG Wait Time: 69,415.64 (s) DB CPU time: 34,818.79 (s)
Avg
%Time Total Wait wait
Wait Class Waits -outs Time (s) (ms) %DB time
User I/O 14,693,843 0 69,222 5 65.0
DB CPU 34,819 32.7
Commit 40,629 0 119 3 0.1
System I/O 26,504 0 57 2 0.1
Network 1,945,010 0 11 0 0.0
Other 125,200 99 4 0 0.0
Application 2,673 0 2 1 0.0
Concurrency 3,059 0 1 0 0.0
Configuration 31 19 0 15 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
db file sequential read 14,092,706 0 65,613 5 108.0 61.6
read by other session 308,534 0 1,260 4 2.4 1.2
direct path read 97,454 0 987 10 0.7 .9
db file scattered read 71,870 0 910 13 0.6 .9
db file parallel read 35,001 0 372 11 0.3 .3
log file sync 40,629 0 119 3 0.3 .1
control file sequential re 26,504 0 57 2 0.2 .1
direct path read temp 14,499 0 49 3 0.1 .0
direct path write temp 9,186 0 28 3 0.1 .0
SQL*Net message to client 1,923,973 0 5 0 14.7 .0
SQL*Net message from dblin 1,056 0 5 5 0.0 .0
Disk file operations I/O 8,848 0 2 0 0.1 .0
ASM file metadata operatio 36 0 2 54 0.0 .0
SQL*Net break/reset to cli 2,636 0 1 1 0.0 .0
ADR block file read 472 0 1 1 0.0 .0
os thread startup 8 0 1 74 0.0 .0
SQL*Net more data to clien 17,656 0 1 0 0.1 .0
asynch descriptor resize 123,852 100 0 0 0.9 .0
local write wait 110 0 0 4 0.0 .0
utl_file I/O 55,635 0 0 0 0.4 .0
log file switch (private s 8 0 0 52 0.0 .0
cursor: pin S wait on X 2 0 0 142 0.0 .0
enq: KO - fast object chec 13 0 0 20 0.0 .0
PX Deq: Slave Session Stat 248 0 0 1 0.0 .0
enq: RO - fast object reus 18 0 0 11 0.0 .0
latch: cache buffers chain 2,511 0 0 0 0.0 .0
latch: shared pool 195 0 0 1 0.0 .0
CSS initialization 12 0 0 8 0.0 .0
PX qref latch 54 100 0 2 0.0 .0
SQL*Net more data from cli 995 0 0 0 0.0 .0
SQL*Net more data from dbl 300 0 0 0 0.0 .0
kksfbc child completion 1 100 0 56 0.0 .0
library cache: mutex X 244 0 0 0 0.0 .0
PX Deq: Signal ACK RSG 124 0 0 0 0.0 .0
undo segment extension 6 100 0 7 0.0 .0
PX Deq: Signal ACK EXT 124 0 0 0 0.0 .0
library cache load lock 3 0 0 9 0.0 .0
ADR block file write 45 0 0 1 0.0 .0
CSS operation: action 12 0 0 2 0.0 .0
reliable message 28 0 0 1 0.0 .0
CSS operation: query 72 0 0 0 0.0 .0
latch: row cache objects 14 0 0 1 0.0 .0
enq: SQ - contention 17 0 0 0 0.0 .0
latch free 32 0 0 0 0.0 .0
buffer busy waits 52 0 0 0 0.0 .0
enq: PS - contention 16 0 0 0 0.0 .0
enq: TX - row lock content 6 0 0 1 0.0 .0
SQL*Net message to dblink 1,018 0 0 0 0.0 .0
cursor: pin S 23 0 0 0 0.0 .0
latch: cache buffers lru c 8 0 0 0 0.0 .0
SQL*Net message from clien 1,923,970 0 944,508 491 14.7
jobq slave wait 66,732 100 33,334 500 0.5
Streams AQ: waiting for me 6,481 100 32,412 5001 0.0
wait for unread message on 32,858 98 32,411 986 0.3
PX Deq: Execution Msg 1,448 0 190 131 0.0
PX Deq: Execute Reply 1,196 0 74 62 0.0
HS message to agent 228 0 4 19 0.0
single-task message 42 0 4 97 0.0
PX Deq Credit: send blkd 904 0 2 3 0.0
PX Deq Credit: need buffer 205 0 1 3 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
PX Deq: Table Q Normal 4,291 0 1 0 0.0
PX Deq: Join ACK 124 0 0 1 0.0
PX Deq: Parse Reply 124 0 0 0 0.0
KSV master wait 256 0 0 0 0.0
Latch Miss Sources
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
ASM map operation freeli kffmTranslate2 0 2 0
DML lock allocation ktadmc 0 2 0
FOB s.o list latch ksfd_allfob 0 2 2
In memory undo latch ktiFlushMe 0 5 0
In memory undo latch ktichg: child 0 3 0
PC and Classifier lists No latch 0 6 0
Real-time plan statistic keswxAddNewPlanEntry 0 20 20
SQL memory manager worka qesmmIRegisterWorkArea:1 0 1 1
active service list kswslogon: session logout 0 23 12
active service list kswssetsvc: PX session swi 0 6 1
active service list kswsite: service iterator 0 1 0
archive process latch kcrrgpll 0 3 3
cache buffers chains kcbgtcr_2 0 1,746 573
cache buffers chains kcbgtcr: fast path (cr pin 0 1,024 2,126
cache buffers chains kcbgcur_2 0 60 8
cache buffers chains kcbchg1: kslbegin: bufs no 0 16 3
cache buffers chains kcbgtcr: fast path 0 14 20
cache buffers chains kcbzibmlt: multi-block rea 0 10 0
cache buffers chains kcbrls_2 0 9 53
cache buffers chains kcbgtcr: kslbegin shared 0 8 1
cache buffers chains kcbrls_1 0 7 84
cache buffers chains kcbgtcr: kslbegin excl 0 6 14
cache buffers chains kcbnew: new latch again 0 6 0
cache buffers chains kcbzgb: scan from tail. no 0 6 0
cache buffers chains kcbzwb 0 5 8
cache buffers chains kcbgcur: fast path (shr) 0 3 0
cache buffers chains kcbget: pin buffer 0 3 0
cache buffers chains kcbzhngcbk2_1 0 1 0
cache buffers lru chain kcbzgws 0 19 0
cache buffers lru chain kcbo_link_q 0 3 0
call allocation ksuxds 0 14 10
call allocation ksudlp: top call 0 2 3
enqueue hash chains ksqgtl3 0 2 1
enqueue hash chains ksqrcl 0 1 2
enqueues ksqgel: create enqueue 0 1 0
object queue header oper kcbo_unlink_q 0 5 2
object queue header oper kcbo_sw_buf 0 2 0
object queue header oper kcbo_link_q 0 1 2
object queue header oper kcbo_switch_cq 0 1 2
object queue header oper kcbo_switch_mq_bg 0 1 4
parallel query alloc buf kxfpbalo 0 1 1
process allocation ksucrp:1 0 2 0
process queue reference kxfpqrsnd 0 1 0
qmn task queue latch kwqmnmvtsks: delay to read 0 1 0
redo allocation kcrfw_redo_gen: redo alloc 0 17 0
row cache objects kqreqd: reget 0 6 0
row cache objects kqrpre: find obj 0 6 13
row cache objects kqrso 0 2 0
row cache objects kqreqd 0 1 2
row cache objects kqrpre: init complete 0 1 1
shared pool kghalo 0 199 106
shared pool kghupr1 0 39 109
shared pool kghfre 0 18 19
shared pool kghalp 0 7 29
space background task la ktsj_grab_task 0 21 27
Mutex Sleep Summary
-> ordered by number of sleeps desc
Wait
Mutex Type Location Sleeps Time (ms)
Library Cache kglhdgn2 106 338 12
Library Cache kgllkc1 57 259 10
Library Cache kgllkdl1 85 123 21
Cursor Pin kkslce [KKSCHLPIN2] 70 286
Library Cache kglget2 2 31 1
Library Cache kglhdgn1 62 31 2
Library Cache kglpin1 4 26 1
Library Cache kglpnal1 90 18 0
Library Cache kglpndl1 95 15 2
Library Cache kgllldl2 112 6 0
Library Cache kglini1 32 1 0
-------------------------------------------------------------Thanks in advance.Hi,
Thanks for reply.
I provided one hour report.
Inst Num Startup Time Release RAC
1 27-Feb-12 09:03 11.2.0.2.0 NO
Platform CPUs Cores Sockets Memory(GB)
Linux x86 64-bit 8 8 8 48.00
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 5606 29-Feb-12 04:00:35 63 3.7
End Snap: 5607 29-Feb-12 05:00:41 63 3.6
Elapsed: 60.11 (mins)
DB Time: 382.67 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 1,952M 1,952M Std Block Size: 16K
Shared Pool Size: 1,024M 1,024M Log Buffer: 18,868K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
DB Time(s): 6.4 0.8 0.03 0.03
DB CPU(s): 1.0 0.1 0.00 0.00
Redo size: 84,539.3 10,425.6
Logical reads: 23,345.6 2,879.1
Block changes: 386.5 47.7
Physical reads: 1,605.0 197.9
Physical writes: 7.1 0.9
User calls: 233.9 28.9
Parses: 4.0 0.5
Hard parses: 0.1 0.0
W/A MB processed: 0.1 0.0
Logons: 0.1 0.0
Executes: 210.9 26.0
Rollbacks: 0.0 0.0
Transactions: 8.1
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.62 Redo NoWait %: 100.00
Buffer Hit %: 95.57 In-memory Sort %: 100.00
Library Hit %: 99.90 Soft Parse %: 98.68
Execute to Parse %: 98.10 Latch Hit %: 99.99
Parse CPU to Parse Elapsd %: 32.08 % Non-Parse CPU: 99.90
Shared Pool Statistics Begin End
Memory Usage %: 89.25 89.45
% SQL with executions>1: 96.79 97.52
% Memory for SQL w/exec>1: 95.67 96.56
Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avg
wait % DB
Event Waits Time(s) (ms) time Wait Class
db file sequential read 3,054,464 17,002 6 74.0 User I/O
DB CPU 3,748 16.3
read by other session 199,603 796 4 3.5 User I/O
direct path read 46,301 439 9 1.9 User I/O
db file scattered read 21,113 269 13 1.2 User I/O
Host CPU (CPUs: 8 Cores: 8 Sockets: 8)
~~~~~~~~ Load Average
Begin End %User %System %WIO %Idle
1.45 1.67 13.2 0.6 15.8 86.2
Instance CPU
~~~~~~~~~~~~
% of total CPU for Instance: 13.0
% of busy CPU for Instance: 94.7
%DB time waiting for CPU - Resource Mgr: 0.0
Memory Statistics
~~~~~~~~~~~~~~~~~ Begin End
Host Mem (MB): 49,152.0 49,152.0
SGA use (MB): 3,072.0 3,072.0
PGA use (MB): 513.5 467.7
% Host Mem used for SGA+PGA: 7.29 7.20
Time Model Statistics
-> Total time in database user-calls (DB Time): 22960.5s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 22,835.9 99.5
DB CPU 3,748.4 16.3
parse time elapsed 15.4 .1
hard parse elapsed time 14.3 .1
PL/SQL execution elapsed time 7.5 .0
PL/SQL compilation elapsed time 6.0 .0
connection management call elapsed time 1.6 .0
sequence load elapsed time 0.4 .0
hard parse (sharing criteria) elapsed time 0.0 .0
repeated bind elapsed time 0.0 .0
failed parse elapsed time 0.0 .0
DB time 22,960.5
background elapsed time 238.1
background cpu time 4.9
Operating System Statistics
-> *TIME statistic values are diffed.
All others display actual values. End Value is displayed if different
-> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
Statistic Value End Value
BUSY_TIME 396,506
IDLE_TIME 2,483,725
IOWAIT_TIME 455,495
NICE_TIME 0
SYS_TIME 16,163
USER_TIME 380,052
LOAD 1 2
RSRC_MGR_CPU_WAIT_TIME 0
VM_IN_BYTES 95,646,943,232
VM_OUT_BYTES 1,686,059,008
PHYSICAL_MEMORY_BYTES 51,539,607,552
NUM_CPUS 8
NUM_CPU_CORES 8
NUM_CPU_SOCKETS 8
GLOBAL_RECEIVE_SIZE_MAX 4,194,304
GLOBAL_SEND_SIZE_MAX 1,048,586
TCP_RECEIVE_SIZE_DEFAULT 87,380
TCP_RECEIVE_SIZE_MAX 4,194,304
TCP_RECEIVE_SIZE_MIN 4,096
TCP_SEND_SIZE_DEFAULT 16,384
TCP_SEND_SIZE_MAX 4,194,304
TCP_SEND_SIZE_MIN 4,096
Operating System Statistics -
Snap Time Load %busy %user %sys %idle %iowait
29-Feb 04:00:35 1.4 N/A N/A N/A N/A N/A
29-Feb 05:00:41 1.7 13.8 13.2 0.6 86.2 15.8
Foreground Wait Class
-> s - second, ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
-> Captured Time accounts for 97.6% of Total DB time 22,960.46 (s)
-> Total FG Wait Time: 18,651.75 (s) DB CPU time: 3,748.35 (s)
Avg
%Time Total Wait wait
Wait Class Waits -outs Time (s) (ms) %DB time
User I/O 3,327,253 0 18,576 6 80.9
DB CPU 3,748 16.3
Commit 23,882 0 69 3 0.3
System I/O 1,035 0 3 3 0.0
Network 842,393 0 2 0 0.0
Other 10,120 99 0 0 0.0
Configuration 3 0 0 58 0.0
Application 264 0 0 1 0.0
Concurrency 1,482 0 0 0 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
db file sequential read 3,054,464 0 17,002 6 104.5 74.0
read by other session 199,603 0 796 4 6.8 3.5
direct path read 46,301 0 439 9 1.6 1.9
db file scattered read 21,113 0 269 13 0.7 1.2
log file sync 23,882 0 69 3 0.8 .3
db file parallel read 4,727 0 68 14 0.2 .3
control file sequential re 1,035 0 3 3 0.0 .0
SQL*Net message to client 840,792 0 2 0 28.8 .0
direct path read temp 95 0 2 18 0.0 .0
local write wait 79 0 0 4 0.0 .0
Disk file operations I/O 870 0 0 0 0.0 .0
ASM file metadata operatio 4 0 0 50 0.0 .0
log file switch (private s 3 0 0 58 0.0 .0
ADR block file read 36 0 0 3 0.0 .0
enq: RO - fast object reus 5 0 0 16 0.0 .0
latch: cache buffers chain 1,465 0 0 0 0.1 .0
SQL*Net break/reset to cli 256 0 0 0 0.0 .0
asynch descriptor resize 10,059 100 0 0 0.3 .0
SQL*Net more data to clien 1,510 0 0 0 0.1 .0
enq: KO - fast object chec 3 0 0 8 0.0 .0
SQL*Net more data from cli 91 0 0 0 0.0 .0
latch: shared pool 14 0 0 0 0.0 .0
ADR block file write 5 0 0 1 0.0 .0
reliable message 8 0 0 0 0.0 .0
direct path write temp 1 0 0 2 0.0 .0
SQL*Net message from clien 840,794 0 68,885 82 28.8
jobq slave wait 7,365 100 3,679 499 0.3
Streams AQ: waiting for me 721 100 3,605 5000 0.0
wait for unread message on 3,648 98 3,603 988 0.1
KSV master wait 20 0 0 0 0.0
Background Wait Events
-> ordered by wait time desc, waits desc (idle events last)
-> Only events with Total Wait Time (s) >= .001 are shown
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % bg
Event Waits -outs Time (s) (ms) /txn time
log file parallel write 29,353 0 83 3 1.0 34.8
db file parallel write 5,753 0 17 3 0.2 6.9
db file sequential read 1,638 0 15 9 0.1 6.1
control file sequential re 5,142 0 13 2 0.2 5.4
os thread startup 140 0 8 58 0.0 3.4
control file parallel writ 1,440 0 8 6 0.0 3.4
log file sequential read 304 0 8 26 0.0 3.3
db file scattered read 214 0 2 9 0.0 .8
ASM file metadata operatio 1,199 0 1 1 0.0 .3
direct path write 35 0 0 6 0.0 .1
direct path read 41 0 0 5 0.0 .1
kfk: async disk IO 6 0 0 9 0.0 .0
Disk file operations I/O 1,266 0 0 0 0.0 .0
ADR block file read 16 0 0 2 0.0 .0
read by other session 3 0 0 8 0.0 .0
Log archive I/O 2 0 0 10 0.0 .0
log file sync 3 0 0 5 0.0 .0
asynch descriptor resize 341 100 0 0 0.0 .0
CSS initialization 1 0 0 6 0.0 .0
log file single write 4 0 0 1 0.0 .0
latch: redo allocation 3 0 0 1 0.0 .0
ADR block file write 5 0 0 1 0.0 .0
LGWR wait for redo copy 45 0 0 0 0.0 .0
CSS operation: query 6 0 0 0 0.0 .0
CSS operation: action 1 0 0 1 0.0 .0
SQL*Net message to client 420 0 0 0 0.0 .0
rdbms ipc message 47,816 39 61,046 1277 1.6
DIAG idle wait 7,200 100 7,200 1000 0.2
Space Manager: slave idle 1,146 98 5,674 4951 0.0
class slave wait 284 0 3,983 14026 0.0
dispatcher timer 61 100 3,660 60006 0.0
Streams AQ: qmn coordinato 258 50 3,613 14003 0.0
Streams AQ: qmn slave idle 130 0 3,613 27789 0.0
Streams AQ: waiting for ti 7 71 3,608 515430 0.0
wait for unread message on 3,605 100 3,606 1000 0.1
pmon timer 1,201 100 3,604 3001 0.0
smon timer 15 73 3,603 240207 0.0
ASM background timer 754 0 3,602 4777 0.0
shared server idle wait 120 100 3,601 30006 0.0
SQL*Net message from clien 554 0 4 7 0.0
KSV master wait 101 0 0 2 0.0
Wait Event Histogram
-> Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
-> % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
-> % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
-> Ordered by Event (idle events last)
% of Waits
Total
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
ADR block file read 52 73.1 1.9 9.6 13.5 1.9
ADR block file write 10 100.0
ADR file lock 12 100.0
ARCH wait for archivelog l 3 100.0
ASM file metadata operatio 1203 97.3 .5 .7 .3 .2 .9
CSS initialization 1 100.0
CSS operation: action 1 100.0
CSS operation: query 6 83.3 16.7
Disk file operations I/O 2118 95.4 4.5 .1
LGWR wait for redo copy 45 100.0
Log archive I/O 2 100.0
SQL*Net break/reset to cli 256 99.6 .4
SQL*Net message to client 839.9 100.0 .0
SQL*Net more data from cli 91 100.0
SQL*Net more data to clien 1503 100.0
asynch descriptor resize 10.4K 100.0
buffer busy waits 2 100.0
control file parallel writ 1440 5.7 35.1 24.0 16.3 12.0 5.5 1.5
control file sequential re 6177 69.4 7.5 5.9 8.1 7.1 1.7 .3
db file parallel read 4727 1.7 3.2 3.2 10.1 46.6 33.3 1.8
db file parallel write 5755 42.3 21.3 18.6 11.2 4.6 1.4 .5
db file scattered read 21.5K 8.4 4.3 11.9 18.9 26.3 25.3 4.9
db file sequential read 3053. 28.7 15.1 11.1 17.9 21.5 5.4 .3 .0
direct path read 46.3K 9.9 8.8 18.5 21.7 22.8 15.7 2.7
direct path read temp 95 9.5 9.5 23.2 49.5 8.4
direct path write 35 11.4 31.4 17.1 22.9 11.4 2.9 2.9
direct path write temp 1 100.0
enq: KO - fast object chec 3 66.7 33.3
enq: RO - fast object reus 5 20.0 20.0 20.0 20.0 20.0
kfk: async disk IO 6 50.0 16.7 16.7 16.7
latch free 3 100.0
latch: cache buffers chain 1465 100.0
latch: cache buffers lru c 1 100.0
latch: object queue header 2 100.0
latch: redo allocation 3 33.3 33.3 33.3
latch: row cache objects 2 100.0
latch: shared pool 15 93.3 6.7
local write wait 79 35.4 34.2 21.5 8.9
log file parallel write 29.4K 47.8 21.7 11.9 9.9 6.8 1.6 .3
log file sequential read 304 6.3 3.0 3.6 10.2 23.4 24.3 29.3
log file single write 4 25.0 75.0
log file switch (private s 3 100.0
log file sync 23.9K 40.9 28.0 12.9 9.7 6.7 1.5 .3
os thread startup 140 100.0
read by other session 199.6 37.1 19.9 12.9 13.1 13.8 3.1 .2
reliable message 8 100.0
ASM background timer 755 2.9 .4 .1 .1 .3 .1 .3 95.8
DIAG idle wait 7196 100.0
KSV master wait 121 88.4 2.5 3.3 2.5 .8 .8 1.7
SQL*Net message from clien 840.1 97.1 1.8 .5 .2 .2 .1 .0 .1
Space Manager: slave idle 1147 .1 .5 99.4
Streams AQ: qmn coordinato 258 49.6 .4 50.0
Streams AQ: qmn slave idle 130 .8 99.2
Streams AQ: waiting for me 721 100.0
Streams AQ: waiting for ti 7 28.6 42.9 28.6
class slave wait 283 39.9 2.5 2.5 3.5 4.9 9.2 15.2 22.3
dispatcher timer 60 100.0
jobq slave wait 7360 .0 .0 .0 99.9
pmon timer 1201 100.0
rdbms ipc message 47.8K 2.7 31.6 17.4 1.1 1.1 .9 20.9 24.3
Wait Event Histogram DB/Inst: I2KPROD/I2KPROD Snaps: 5606-5607
-> Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
-> % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
-> % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
-> Ordered by Event (idle events last)
% of Waits
Total
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
shared server idle wait 120 100.0
smon timer 16 6.3 93.8
wait for unread message on 7250 .1 99.9
Latch Miss Sources
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
In memory undo latch ktichg: child 0 1 0
active service list kswslogon: session logout 0 2 0
cache buffers chains kcbgtcr_2 0 1,123 483
cache buffers chains kcbgtcr: fast path (cr pin 0 496 1,131
cache buffers chains kcbrls_2 0 5 6
cache buffers chains kcbgcur_2 0 4 0
cache buffers chains kcbgtcr: fast path 0 3 1
cache buffers chains kcbzwb 0 2 4
cache buffers chains kcbchg1: kslbegin: bufs no 0 1 0
cache buffers chains kcbnew: new latch again 0 1 0
cache buffers chains kcbrls_1 0 1 6
cache buffers chains kcbzgb: scan from tail. no 0 1 0
cache buffers lru chain kcbzgws 0 1 0
object queue header oper kcbo_switch_cq 0 1 0
object queue header oper kcbo_switch_mq_bg 0 1 2
redo allocation kcrfw_redo_gen: redo alloc 0 3 0
row cache objects kqrpre: find obj 0 1 1
row cache objects kqrso 0 1 0
shared pool kghalo 0 13 3
shared pool kghupr1 0 4 15
shared pool kghalp 0 1 0
space background task la ktsj_grab_task 0 2 2
------------------------------------------------------------- -
Oracle 10.2.0.3 performance issue
Hi all,
I have a performance issue in the database I currently maintain.
Here's the specifications:
- Windows 2003 Server 64bit
- Oracle 10g 10.2.0.3 patch 31
- Application Server 10gR2 OC4J (Forms and Report Services)
The server was re-installed about 3 weeks ago after it got viruses.
I believe my setup on the memory parameters were fine because for two weeks the system ran fine and the end of day process is also increasing in terms of time.
However, starting 2 days ago in the middle of no where, the end of day process started to get really slow (from 11 minutes became 1 hour).
The IT standby in my client will normally do an analyze schema and after that every thing will be back to normal again.
I turned off the GATHER_STATS_JOB 2 weeks ago and replaced it with DBMS_STATS.GATHER_DATABASE_STATS which I scheduled to execute every Friday.
This problem occurred even before the server was re-installed and as usual, analyze schema (GATHER_SCHEMA_STATS) will fix it.
I don't have much options currently, and analyzing the schema seems to be the only solution which normally we never do for other clients (at not everyday analyzing schema).
I hope any of you could help me out with any solution on how to trace the exact problem on this.
Thank you,
AdhikaHi Satish,
This end of day process basically will insert some values to certain tables and also generating reports afterward.
I managed to get the AWR report within the time of the end of day process.
sql execute elapsed time is on the top of Time Model Statistics.
What I don't understand here is why is this issue happened only after 2 weeks?
I suspected that this might be because Oracle pick the wrong execution plan, and normally a wrong execution plan caused by outdated statistics on the indexes and tables, but what I cannot understand is why this is happening on Monday morning where in Friday night GATHER_DATABASE_STATS ran successfully.
Yesterday when the analyze schema was executed again, this morning I got another email saying that the performance issue occurred again.
The top most wait events are: db file sequential read, db file scattered read, log file parallel write, LNS Wait on SENDREQ, and log file sequential read.
Thank you,
Adhika -
Heaviest performance issue impacting business Free Pct showing 9.41%
Dears,
We are facing heaviest performance issue on our database and and Application, Our Key users Oracle Techno functional consultant complaining that when "Free Pct" was 18% performance was excellent but now the "Free Pct" has reached to 9.41%.
Am wondering if any performance tuning steps can be done to come back to its 18%, your valuable help is required.
Following are the details:-
Tablespace | Size Mgs | Free Mgs |Used Mgs |**Free Pct** | Used Pct |Max Mb
APPS_TS_TX_IDX | 84780.88 | 7973.75 |76807.13 |**9.41** | 90.41 | 84780.88
APPS_TS_TX_DATA | 120540.25 | 16301.88 | 104238.38 |*13.52* | 86.48 | 149276.23
Do I have to rebuild index tablespace? If yes, while doing this what are the precautions can be done like, do I need downtime from the business?
will the command below if triggered resolves the issue:-
alter index apps. APPS_TS_TX_IDX rebuild;
Kind regards,
Mohammed
Edited by: user9007339 on 28/01/2013 04:22 ص
Edited by: user9007339 on 28/01/2013 04:52 ص
Edited by: user9007339 on 28/01/2013 05:48 صHi Helios,
I shall certainly update, here are the details and feedback of our SR:-
======================================================================================================
1, SR 3-6701198251 : Oracle Application PRODUCTION SHUTDOWN THREE TIMES
=== Data Collected ===
Findings and Recommendations
Finding 1: Commits and Rollbacks
Impact is 4.76 active sessions, 52.92% of total activity.
Waits on event "log file sync" while performing COMMIT and ROLLBACK operations
were consuming significant database time.
Recommendation 1: Host Configuration
Estimated benefit is 4.76 active sessions, 52.92% of total activity.
Action
Investigate the possibility of improving the performance of I/O to the
online redo log files.
Rationale
The average size of writes to the online redo log files was 1788 K and
the average time per write was 2766 milliseconds.
Symptoms That Led to the Finding:
Wait class "Commit" was consuming significant database time.
Impact is 4.76 active sessions, 52.92% of total activity.
Finding 2: Top SQL by DB Time
Impact is 3.86 active sessions, 42.9% of total activity.
SQL statements consuming significant database time were found.
Recommendation 1: SQL Tuning
Estimated benefit is 2.29 active sessions, 25.44% of total activity.
Action
Tune the PL/SQL block with SQL_ID "5t39uchjqpyfm". Refer to the "Tuning
PL/SQL Applications" chapter of Oracle's "PL/SQL User's Guide and
Reference".
Related Object
SQL statement with SQL_ID 5t39uchjqpyfm.
BEGIN xla_accounting_pkg.unit_processor_batch(:errbuf,:rc,:A0,:A1,:A2
,:A3,:A4,:A5,:A6,:A7,:A8,:A9,:A10,:A11,:A12,:A13,:A14); END;
log_buffer 10485760
log_checkpoint_interval 100000
log_checkpoint_timeout 1200
log_checkpoints_to_alert TRUE
=== Action Plan ===
Mohammed,
AWR and ADDM reports clearly point to performance issues around redo logs. Top waits were :
op 5 Timed Foreground Events
Event Waits Time(s) Avg wait (ms) % DB time Wait Class
log file sync 1,517 13,265 8744 45.55 Commit
log buffer space 9,048 8,218 908 28.22 Configuration
buffer busy waits 6,519 3,743 574 12.85 Concurrency
DB CPU 2,177 7.48
db file sequential read 54,769 540 10 1.85 User I/O
You have two options here :
1> Increase size of log_buffer . Set to 15M , unset other parameters ( log_checkpoint_interval , log_checkpoint_timeout )
2> Increase size and number of online redo log files. Make sure that these are on fast disks.
3> Run redo generating jobs , like XLAACCUP, during off hours where end-users are not in the system.
======================================================================================================
Dear Helios,
We are waiting for the RAM to come from our vendor to increase from 16GB to 32GB on Application Server it will take 3 weeks from now.
Secondly, Our key users especially "Oracle Techno Functional Consultants and "Oracle Application Developers" are compalining about the APPS_TS_TX_IDX tablespace tat has been decreased by 50% from 18% to 9.41%................I was attempting to find if there any possibiities to tune this tablespace..........Your suggestion is appreciated.
Regards,
Mohammed
Edited by: user9007339 on 29/01/2013 03:02 ص -
What is Road map Analysis, Issue tracking,, Monitoring, Reporting?
Hi
Friends
what is Road map Analysis, Issue tracking,, Monitoring, Reporting?
can any one clear my doubts in detail full points will be givenDear Venkat,
Your questions are very high level questions.
Roadmap Analysis: This term is generally used in SAP Implementation where we compare the project status with the SAP roadmap. Generally in ASAP Roadmap, we have SAP specified standard deliverables, and there can be custom deliverables as per the client's requirements. If we need to do an analysis of custom deliverables viz standard deliverables or standard roadmap viz custom roadmap, we call it as roadmap analysis.
Issue Tracking: Very broad level term - can be in Implementation as well as support projects. Issues are either support problems or implementation problems which are documented and recorded for solutioning and approval. These are generally steering committee terms used in a project.
Monitoring: Again a broad level term. Any watch process can be termed as monitoring. Eg: Monitoring of Backup; Monitoring of System health check etc.
Reporting: Again a broad level term. It is the same as defined in the english dictionary. Nothing related to any process in SAP with technical solution in mind.
Regards,
Anirban -
Database migrated from Oracle 10g to 11g Discoverer report performance issu
Hi All,
We are now getting issue in Discoverer Report performance as the report is keep on running when database got upgrade from 10g to 11g.
In database 10g the report is working fine but the same report is not working fine in 11g.
The query i have changed as I have passed the date format TO_CHAR("DD-MON-YYYY" and removed the NVL & TRUNC function from the existing query.
The report is now working fine in Database 11g backhand but when I am using the same query in Discoverer it is not working and report is keep on running.
Please advise.
Regards,Pl post exact OS, database and Discoverer versions. After the upgrade, have statistics been updated ? Have you traced the Discoverer query to determine where the performance issue is ?
How To Find Oracle Discoverer Diagnostic and Tracing Guides [ID 290658.1]
How To Enable SQL Tracing For Discoverer Sessions [ID 133055.1]
Discoverer 11g: Performance degradation after Upgrade to Database 11g [ID 1514929.1]
HTH
Srini -
Oracle Apps Database severe Performance Issue
Hi Gurus,
This is regarding a severe performance issue running in our Production E-Business Suite Instance.
its an R12.1.3 setup installed with 11.2.0.1 Database. All the servers are Solaris Sparc 64 (Solaris 10)
Let me brief you about the instance first:
2 Node Application
- Main Application Server hosting web/forms/concurrent/admin servers
- iSupplier server hosting web services (placed in DMZ, used by external suppliers via Internet)
1 Node Database Server
Database Server Specs
Memory: 144G phys mem 20G total swap
- CPUs (8Px4cores, 2Px2cores)
- I/O - fiber channel hard disk (hitachi SAN Storage) - 7 DATA_TOPs (7 drives with RAID 5) - current DB size 1.6 TB
- at peak load, around 1000 concurrent forms session and 2000 web sessions.
We have been facing some serious performance issues and we raised an SR with Oracle Support.
The Support analyzed a bunch of AWR Reports we provided them and they asked us to increase the DB_CACHE from its current usage of 27G to 40G
So, we changed SGA_TARGET from 35G to 50G and PGA was increased from 35G to 40G as v$pgastat was also suggesting some lack of memory.
We made these changes last night.
Today morning we observed the following:
1. after start of office hours, we checked in the home page of EM DB Console that ADDM was showing reduced impact due to lack of SGA memory which seemed to be a good sign. Earlier it was around 25% which was now at 12%.
However, negative aspects were:
1. lot of swapping was reported by the System Administrators on the DB Server
2. High CPU Usage
3. EM DB Console showed a lot of "Concurrency Wait Class" events ...throughout the day lot of blocking sessions were reported which were making other sessions to wait.
in the AWR Report, following foreground reports were listed:
Top 5 Timed Foreground Events
Event
Waits
Time(s)
Avg wait (ms)
% DB time
Wait Class
DB CPU
132,577
61.46
library cache lock
3,539
40,683
11496
18.86
Concurrency
library cache: mutex X
4,014,083
21,011
5
9.74
Concurrency
db file sequential read
4,138,014
20,767
5
9.63
User I/O
latch free
381,916
5,897
15
2.73
Other
This is showing "library cache lock" events as the main culprit apart from the usual suspect, the CPU.
I am attaching the AWR Report. Please let me know if i should revert back the memory changes or is there anything else i could do.
Please help us resolving it because the performance is going worst.
Regards,
Muneer.Pl do not post duplicates - Oracle Apps Database severe Performance Issue
For all critical production issues, pl work with Support thru SRs - using the forums to troubleshoot production issues is not wise
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