Performance tunning with Oracle Expert for 8i

Hi all,
The database is Oracle 8i Enterprise Edition 8.1.7.4.1 .
What should I do to launch Oracle Expert ? Because I want to get performance suggestions from Oracle Expert's report.
Thank you very much indeed

do you have the tuning pack -
http://www.oracle.com/pls/tahiti/tahiti.drilldown?levelnum=2&toplevel=a76992&method=FULL&chapters=0&book=&wildcards=1&preference=&expand_all=&verb=&word=Oracle+Expert#a76992

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FDM Performance Tunning with Oracle

Hi,
We are using Oracle 10g with FDM.We have scheduled batch jobs but it takes a long time while importing the data.
Are there any performance tunnings we can do at Oracle end?
Thanks.

First you need to isolate where the performance bottleneck is occurring. If batch loads are significantly slower than interactive loads, then I'd look in the batch processes, as you've suggested yourself.
If load performance is a problem in both batch and interactive modes, then something else you might consider is the number of records in a typical load. Have you configured the location with the optimal load type (SQL Insert or Bulk Insert) for your situation?

Performance issues with Oracle EE 9.2.0.4 and RedHat 2.1

Hello,
I am having some serious performance issues with Oracle Enterprise Edition 9.2.0.4 and RedHat Linux 2.1. The processor goes berserk at 100% for long (some 5 min.) periods of time, and all the ram memory gets used.
Some environment characteristics:
Machine: Intel Pentium IV 2.0GHz with 1GB of RAM.
OS: RedHat Linux 2.1 Enterprise.
Oracle: Oracle Enterprise Edition 9.2.0.4
Application: We have a small web-application with 10 users (for now) and very basic queries (all in stored procedures). Also we use the latest version of ODP.NET with default connection settings (some low pooling, etc).
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Is anybody else having this similar behavior?
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Thank you very much and sorry I couldnt write sooner. It seems that the administrator doesnt see the kswap going on so much, so I dont really know what is going on.
We are looking at some queries and some indexing but this is nuts, if I had some poor queries, which we dont really, the server would show pick right?
But he goes crazy and has two oracle processes taking all the resources. There seems to be little swapping going on.
Son now what? They are all ready talking about MS-SQL please help me out here, this is crazy!!!
We have, may be the most powerful combinations here. What is oracle doing?
We even kill the Working Process of the IIS and have no one do anything with the database and still dose two processes going on.
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Performance problem with Oracle

We are currently getting a system developed in Unix/Weblogic/Tomcat/Oracle environment. We have developed a screen that contains 5 or 6 different parameters to select from. We could select multiple parameters in each of these selections. The idea behind the subsequent screens is to attach information to already existing data/ possible future data that matches the selection criteria.
Based on these selections, existing data located within the system in a table is searched and those that match are selected. Also new rows are created in the table against combinations that do not currently have a match. Frequently multiple parameters are selected, and 2000 different combinations need to be searched in the table. Of these selections, only about 100 or 200 combinations will be available in existing data. So the system is having to insert 1800 rows. The user meanwhile waits for the system to come up with data based on their selections. The user is not willing to wait more than 30 seconds to get to the next screen. In the above mentioned scenario, the system takes more than an hour to insert the new records and bring the information up. We need suggestions to see if the performance can be improved this drastically. If not what are the alternatives? Thanks

The #1 cause for performance problems with Oracle is not using it correctly.
I find it hard to believe that with the small data volumes mentioned, that you can have perfornance problems.
You need to perform a sanity check. Are you using Oracle correctly? Do you know what bind variables are? Are you using indexes correctly? Are you using PL/SQL correctly? Is the instance setup correctly? What about storage, are you using SAME (RAID10) or something else? Etc.
Facts. Oracle peforms exceptionally well. Oracle exceptionally well.
Simple example from a benchmark I did on this exact same subject. App-tier developers not understanding and not using Oracle correctly. Incorrect usage of Oracle doing a 100,000 SQL statements. 24+ minutes elapsed time. Doing those exact same 100,000 SQL statement correctly (using bind variables) - 8 seconds elapsed time. (benchmark using Oracle 10.1.0.3 on a Sunfire V20z server)
But then you need to use Oracle correctly. Are you familiar with the Oracle Concepts Guide? Have you read the Oracle Application Developer Fundamentals Guide?

Large Value problem with Oracle Provider for 9.2.0.7.0 and 10.1.0.4.0

Hi,
There is table having single column "SCORE" as shown below.
| SCORE |
|9.0000E+33 |
|8.0000E+33 |
|7.0000E+33 |
|6.0000E+33 |
I am trying to fetch column SCORE from above table in database. The type of column SCORE is NUMBER. With Oracle Provider for OLE DB 9.0.1.0.1 everything works fine.
But when I use 9.2.0.7.0 or 10.1.0.4.0 , Recordset::rawGetRows() returns -2147217845. Is there is any limit on value retrived using Recordset::rawGetRows() in newer versions of Oracle Provider for OLE DB?
Please help.
Thanks and Regards,
AC
Edited by: user8090166 on Feb 24, 2009 4:13 AM
Edited by: user8090166 on Feb 24, 2009 4:17 AM

Hi,
Yes, i've take it off but i still have the same error...
Anyway, like the, the people from hardware, were able to recover the 32Bit Oracle9.2 system, what do you think of use the old system to make the export, and then import into the new one 64Bit and Oracle10.2 ?
Homogeneous system copy by r3load method?
Is it possible right!?
More easy and a cleaner installation?
RM

Performance tunning in oracle

Hi friends,
I am himansu, i am facing a problem during performance tunning of query in oracle , please guide me how to tune a query which will give better performance.

907977 wrote:
Hi friends,
I am himansu, i am facing a problem during performance tunning of query in oracle , please guide me how to tune a query which will give better performance.Welcome to OTN
Please post your thread at SQL, PL/SQL. PL/SQL
and provide your sql query.
Hope this will help you.

Problem creating a new Glassfish 4 server with Oracle Tools for Kepler

Hello,
I installed Oracle Tools for Kepler with no problem. But when I want to create a new server and fill in the directory to the server (which is valid, C:/glassfish4/glassfish), nothing happens. I can only click 'back' or 'cancel'.
There is no error message.
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Thanks in advance for help.

Hi,
Could you let us know where you installed the GlassFish tools plugins from ?
Glassfish 4 support in OEPE has been available since Glassfish was released in June. But it looks like a bug may have been introduced in the latest build available on http://download.java.net/glassfish/ which does not exist in the version available at http://download.oracle.com/otn_software/oepe/12.1.2.1/kepler/repository
The workaround on the version you are running is to enter a dummy password value and this should allow you to create the Glassfish 4 server.
I will be filing a bug to track this issue
thanks
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Is it possible to set up a session with an expert for a team?

I'm the administrator for a small CC team. While a couple of us are fairly comfortable with the Adobe suite, we're bringing in a few single-app subscribers who need to learn the basics (InCopy specifically). Is it possible to set up a group session with an Adobe expert, i.e. a conference line we can dial in to, so that we're all on the same page?

Certainly you can setup an expert session. Please go through the link below to setup a session with Adobe experts.
https://helpx.adobe.com/creative-cloud/team/creative-cloud-teams.html#
Hope this helps.
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Need demo copy of Oracle Expert for 8i

So that we may better diagnose DOWNLOAD problems, please provide the following information.
- Server name
- Filename
- Date/Time
- Browser + Version
- O/S + Version
- Error Msg
Does anyone know how I can download the Demo of OEM for 8i? I am particularly interested in checking out Oracle Expert.
Thank you.

Should be on technet here somewhere .. OEM 9i is bundled
as part of the 9i for Windows NT download.

Performance issue with BW Reports for concurrent users

All:
I notice that one BW report that runs in few seconds will take upto 3.5 minutes when multiple users run it at the same time.
We are in BW 3.5 and we run reports for portal.
Does anyone have any suggestion about how to handle performance issue with concurrent users?
Thanks,
Pranab

Hi,
use the OLAP-cache and/or aggregates and consider using load balancing to distribute the users to several servers.
Kind regards
/martin

Performance issue with Oracle Text index

Hi Experts,
We are on Oracle 11.2..0.3 on Solaris 10. I have implemented Oracle Text in our environment and I am facing a strange performance issue that is happening in our environment.
One sql having CONTAINS clause is taking forever - more than 20 minutes and still does not complete. This sql has a contains clause and an exists clause and a not exists clause.
Now if I remove the exists clause and a not exists clause , it completes fast. but with those two clauses it is just taking forever. It is late night so i am not able to post the table and sql query details and will do so tomorrow but based on this general description, are there any pointers for me to review?
sql query doing fine:
SELECT
    U.CLNT_OID, U.USR_OID, S.MAILADDR
FROM
    access_usr U
    INNER JOIN access_sia S
        ON S.USR_OID = U.USR_OID AND S.CLNT_OID = U.CLNT_OID
    WHERE U.CLNT_OID = 'ABCX32S'
    AND CONTAINS(LAST_NAME , 'TO%' ) >0
--sql query that hangs forever:
SELECT
    U.CLNT_OID, U.USR_OID, S.MAILADDR
FROM
    access_usr U
    INNER JOIN access_sia S
        ON S.USR_OID = U.USR_OID AND S.CLNT_OID = U.CLNT_OID
    WHERE U.CLNT_OID = 'ABCX32S'
    AND CONTAINS(LAST_NAME , 'TO%' ) >0
and exists (--one clause here wiht a few table joins)
and not exists (--one clause here wiht a few table joins);
--Now another strange thing I found is if instead of 'TO%' in this sql, if I were to use 'ZZ%' or 'L1%' it works fast but for 'TO%' it goes slow with those two exists not exists clauses!
I will be most thankful for the inputs.
OrauserN

Hi Barbara,
First of all, thanks a lot for reviewing the issue.
Unluckily making the change to empty_stoplist did not work out. I am today copying the entire sql here that has this issue and will be most thankful for more insights/pointers on what can be done.
Here is the entire sql:
SELECT U.CLNT_OID,
       U.USR_OID,
       S.EMAILADDRESS,
       U.FIRST_NAME,
       U.LAST_NAME,
       S.JOBCODE,
       S.LOCATION,
       S.DEPARTMENT,
       S.ASSOCIATEID,
       S.ENTERPRISECOMPANYCODE,
       S.EMPLOYEEID,
       S.PAYGROUP,
       S.PRODUCTLOCALE
FROM    ACCESS_USR U
       INNER JOIN
          ACCESS_SIA S
       ON S.USR_OID = U.USR_OID AND S.CLNT_OID = U.CLNT_OID
WHERE     U.CLNT_OID = 'G39NY3D25942TXDA'
       AND EXISTS
              (SELECT 1
                 FROM ACCESS_USR_GROUP_XREF UGX
                      INNER JOIN ACCESS_GROUP RELG
                         ON     RELG.CLNT_OID = UGX.CLNT_OID
                            AND RELG.GROUP_OID = UGX.GROUP_OID
                      INNER JOIN ACCESS_GROUP G
                         ON     G.CLNT_OID = RELG.CLNT_OID
                            AND G.GROUP_TYPE_OID = RELG.GROUP_TYPE_OID
                WHERE     UGX.CLNT_OID = U.CLNT_OID
                      AND UGX.USR_OID = U.USR_OID
                      AND G.GROUP_OID = 920512943
                      AND UGX.INCLUDED = 1)
       AND NOT EXISTS
                  (SELECT 1
                     FROM    ACCESS_USR_GROUP_XREF UGX
                          INNER JOIN
                             ACCESS_GROUP G
                          ON     G.CLNT_OID = UGX.CLNT_OID
                             AND G.GROUP_OID = UGX.GROUP_OID
                    WHERE     UGX.CLNT_OID = U.CLNT_OID
                          AND UGX.USR_OID = U.USR_OID
                          AND G.GROUP_OID = 920512943
                          AND UGX.INCLUDED = 1)
       AND CONTAINS (U.LAST_NAME, 'Bon%') > 0;
Like I said before if the EXISTS and NOT EXISTS clause are removed it works in sub-second. But with those EXISTS and NOT EXISTS CLAUSE IT TAKES ANY WHERE FROM 25 minutes to more than one hour.
NOte also that it was not TO% but Bon% in the CONTAINS clause that is giving the issue - sorry that was wrong on my part.
Also please see below the ORACLE TEXT index defined on the table ACCESS_USER:
--definition of preferences used in the index:
SET SERVEROUTPUT ON size unlimited
WHENEVER SQLERROR EXIT SQL.SQLCODE
DECLARE
   v_err       VARCHAR2 (1000);
   v_sqlcode   NUMBER;
   v_count     NUMBER;
BEGIN
   ctxsys.ctx_ddl.create_preference ('cust_lexer', 'BASIC_LEXER');
   ctxsys.ctx_ddl.set_attribute ('cust_lexer', 'base_letter', 'YES'); -- removes diacritics
EXCEPTION
   WHEN OTHERS
   THEN
      v_err := SQLERRM;
      v_sqlcode := SQLCODE;
      v_count := INSTR (v_err, 'DRG-10701');
      IF v_count > 0
      THEN
         DBMS_OUTPUT.put_line (
            'The required preference named CUST_LEXER with BASIC LEXER is already set up');
      ELSE
         RAISE;
      END IF;
END;
DECLARE
   v_err       VARCHAR2 (1000);
   v_sqlcode   NUMBER;
   v_count     NUMBER;
BEGIN
   ctxsys.ctx_ddl.create_preference ('cust_wl', 'BASIC_WORDLIST');
   ctxsys.ctx_ddl.set_attribute ('cust_wl', 'SUBSTRING_INDEX', 'true'); -- to improve performance
EXCEPTION
   WHEN OTHERS
   THEN
      v_err := SQLERRM;
      v_sqlcode := SQLCODE;
      v_count := INSTR (v_err, 'DRG-10701');
      IF v_count > 0
      THEN
         DBMS_OUTPUT.put_line (
            'The required preference named CUST_WL with BASIC WORDLIST is already set up');
      ELSE
         RAISE;
      END IF;
END;
--now below is the code of the index:
CREATE INDEX ACCESS_USR_IDX3 ON ACCESS_USR
(FIRST_NAME)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('LEXER cust_lexer WORDLIST cust_wl SYNC (ON COMMIT)');
CREATE INDEX ACCESS_USR_IDX4 ON ACCESS_USR
(LAST_NAME)
INDEXTYPE IS CTXSYS.CONTEXT
PARAMETERS('LEXER cust_lexer WORDLIST cust_wl SYNC (ON COMMIT)');
The strange thing is that, like I said, If I remove the exists clause the query returns very fast. Also if I modify the query to use only one NOT EXISTS clause and remove the other EXISTS clause it returns in less than one second. Also if I remove the EXISTS clause and use only the NOT EXISTS clause it returns in less than 4 seconds. But with both clauses it runs forever!
When I tried to get dbms_xplan.display_cursor to get the query plan (for the case of both exists and not exists clause in the query), it said that previous statement's sql id was 0 or something like that so that I was not able to see the query plan. I will keep trying to get this plan (it takes 25 minutes to one hour each time but will get this info soon). Again any pointers are most helpful.
Regards
OrauserN

Performance issue with Oracle data source

Hi all,
I've a rather strange problem that I'm stuck on need some assistance on.
I have a rules file which drags data in via an SQL data source thats an Oracle server. If I cut/paste the 3 sections of "select" "from" and "where" into SQL-Developer and run the query, it takes less than 1 second to complete. When I run the "load data" with this rule file or even use the "Retrieve" with the rules file edit, it takes up to an hour to complete/retrieve the data.
The table in question being used has millions of rows and I'm using one of the indexed fields to retrieve the data. It's as if the Essbase/Rule file is ognoring the index, or I have a config issue with the ODBC settings on the server that is causing the problem.
ODBC.INI file entry for the Oracle server as follows (changed any sensitive info to xxx or 999).
[XXX]
Driver=/opt/data01/hyperion/common/ODBC-64/Merant/5.2/lib/ARora22.so
Description=DataDirect 5.2 Oracle Wire Protocol
AlternateServers=
ApplicationUsingThreads=1
ArraySize=60000
CachedCursorLimit=32
CachedDescLimit=0
CatalogIncludesSynonyms=1
CatalogOptions=0
ConnectionRetryCount=0
ConnectionRetryDelay=3
DefaultLongDataBuffLen=1024
DescribeAtPrepare=0
EnableDescribeParam=0
EnableNcharSupport=0
EnableScrollableCursors=1
EnableStaticCursorsForLongData=0
EnableTimestampWithTimeZone=0
HostName=999.999.999.999
LoadBalancing=0
LocalTimeZoneOffset=
LockTimeOut=-1
LogonID=xxx
Password=xxx
PortNumber=1521
ProcedureRetResults=0
ReportCodePageConversionErrors=0
ServiceType=0
ServiceName=xxx
SID=
TimeEscapeMapping=0
UseCurrentSchema=1
Can anyone please advise on this lack of performance.
Thanks in advance
Bagpuss

One other thing that I've seen is that if your Oracle data source and Essbase server are in different geographic locations, you can get some delay when it retrieves data over the WAN. I guess there is some handshaking going on when passing the data from Oracle to Essbase (either by record or groups of records) that is slowed WAY down over the WAN.
Our solution to this was remove teh query out of the load rule, run it via SQL+ on a command line at the geographic location where the Oracle database is, then ftp the resulting file to where the Essbase server is.
With upwards of 6 million records being retrieved, it took around 4 hours in the load rule, but running the query via command line took 10 minutes, then the ftp took less than 5.

Performance Tunning in oracle 11g

Hi everybody,
My oracle version is 11.2.0.2 and OS :RHEL 5.5;64 bit each.As far i know,in 11g most tunning issues are handled by oracle itself.But still there are many issues that a dba should consider.Recently my system begin to response slowly,and i need to investigate the reason and come up with the solution as per management instruction.But i am confuse where and how to start...??
So..my request to experience people pls give some guidance what are issues/tools i would start with??
Another think...i m using toad 9.5,32 bit.Is it possioble to get proper message for 11g incase of generating different tunning reports.
Thanks and Regards,

user8983130 wrote:
Hi everybody,
My oracle version is 11.2.0.2 and OS :RHEL 5.5;64 bit each.As far i know,in 11g most tunning issues are handled by oracle itself.But still there are many issues that a dba should consider.Recently my system begin to response slowly,and i need to investigate the reason and come up with the solution as per management instruction.But i am confuse where and how to start...??
So..my request to experience people pls give some guidance what are issues/tools i would start with??
Another think...i m using toad 9.5,32 bit.Is it possioble to get proper message for 11g incase of generating different tunning reports.
Thanks and Regards,what does AWR show as most recourse intensive SQL?
Those are the statements that need examination.

Performance problems with Oracle 9.2.0.2 Database with optimizer_mode=RULE

If I make an explain plan for a query of the following form:
SELECT a.*
FROM a, b
WHERE a.pk = b.fk
AND b.pk IN (1, 2);
the explain plan states, that a FULL-TABLE-SCAN on table b is performed and a HASH-JOIN is done to execute the query.
On 8.0.6 Database the Indexes on the tables are used and a NESTED-LOOP join is performed.
Why is the 9.2.0.2 Database using HASH-JOINS when the Database is explicitly set to optimizer_mode=RULE, as I think HASH-JOINS are only possible with CBO?
How can I force the 9.2.0.2 database to perform exactly like the 8.0.6 database with RBO?

some options:
set the hash_join_enabled parameter to false in the init.ora file.
set the compatible parameter to 8.0 in the init.ora file.
documentation:
HASH_JOIN_ENABLED specifies whether the optimizer should consider using a
hash join as a join method. When set to FALSE, hash join is turned off; that is, it is
not available as a join method that the optimizer can consider choosing. When set to
TRUE, the optimizer will compare the cost of a hash join to other types of joins, and
choose it if it gives the best cost.
COMPATIBLE allows you to use a new release, while at the same time guaranteeing
backward compatibility with an earlier release. This is in case it becomes necessary
to revert to the earlier release. This parameter specifies the release with which the
Oracle server must maintain compatibility. Some features of the current release may
be restricted.

SAP Performance Problem with Oracle 10 on Sun SPARC T5240 server

Dear Friends,
We have a performance problem after migrating our SAP ERP 6.0 basis system. We moved to new servers a month ago.
According to SAP EarlyWatchAlert Report, CPU response time is too high, altough CPU utilization is never more than 5%,
The current system is :
Database server : Sun SPARC Enterprise T5240 Server - 2 CPU´s with 6 core, 8 thread, 1.2 Ghz 32 GB RAM
and we use another identical configured server as an application server.
Database is Oracle 10.2.0 and operating system is Solaris 10.
The problem is average CPU response time is 450 ms, and max. CPU load is %5 percent.
Pre-migration configuration with old servers, we had CPU response : 150 ms and max CPU load: 50%.
Old configuration : 2 X HP rp3440, 2 X PA 8800 CPU (2 core, 1.0 GHz).
Have you got any experience with a similar situation, which setting might be wrong for not fully utilizing server CPU´s?
or do you know any similar configuration for benchmark?
Thanks in advance
Uzan

Our organization upgraded an application - The vendor had originally suggested a T2000. When we finally migrated onto it, the performance was worse than the older version of the application. The vendor hadn't yet tested the combination of T2000 and 10.2 with their application when they had made that hardware recommendation, they subsequently revised their recommendations. We ended up with an M4000.
The application performance, IMHO, still stinks. But that's because it's a java based application written for database independence.
The interesting item to note here, is that in the application teams 'selective' testing - everything worked fine. When the testing was extended to include users who didn't follow the 'test plan', they found performance begin to tank. Then with more users, more testing, they found that the T2000 was not going to perform well. The test plan by the apps team was not sufficient to find the issues, and they did not include any load testing!
Edited by: dbtoo on Jun 5, 2009 11:20 AM

Performance tunning with Oracle Expert for 8i

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