Oracle 10G performance problems

Hello,
we have a lot of performance problems with oracle 10G. Especially tables scan on DRAW or AEN1 have long response times. It seems that the CBO uses the wrong strategy. The latest merge fix is already installed. Any idea to solve the problem is welcome.
Best regards
Juergen Remmert

We had similar performance issues in our environment, once we upgraded from 9.2.0.2 to 10.2.0.2.
Oracle: 10.2.0.2
SAP: 4.7x110
OS: SOLARIS 9 64bit
The above mentioned notes were very helpful. We had to install an oracle patch as well (found on marketplace) -- 6321245
and make the following oracle parameters changes:
pga_aggregate_target - 144MB (default = 25MB)
*.event="10027 trace name context forever, level 1"
*.event="10028 trace name context forever, level 1"
*.event="10162 trace name context forever, level 1"
*.event="10183 trace name context forever, level 1"
*.event="10191 trace name context forever, level 1"
*.event="10629 trace name context forever, level 32"
*.event="38068 trace name context forever, level 100"
*.event="38043 trace name context forever, level 1"
*.optimizer_index_caching=50
*.optimizer_index_cost_adj=20
*.parallel_execution_message_size=16384
*._b_tree_bitmap_plans=FALSE
*._index_join_enabled=FALSE
*._optim_peek_user_binds=FALSE
*._optimizer_mjc_enabled=FALSE
*._sort_elimination_cost_ratio=10
Remove
*.optimizer_features_enable='9.2.0'
HTH

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Oracle 10G connection problem

Oracle 10G connection problem
I launch my db with the following script:
su - oracle -c "export ORACLE_HOME=/u01/app/oracle/product/10.1.0/db_1 && /u01/app/oracle/product/10.1.0/db_1/bin/dbstart"
su - oracle -c "export ORACLE_HOME=/u01/app/oracle/product/10.1.0/db_1 && /u01/app/oracle/product/10.1.0/db_1/bin/lsnrctl start"
Here is the output:
SQL*Plus: Release 10.1.0.2.0 - Production on Fri Feb 27 22:17:51 2004
Copyright (c) 1982, 2004, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 188743680 bytes
Fixed Size 778036 bytes
Variable Size 162537676 bytes
Database Buffers 25165824 bytes
Redo Buffers 262144 bytes
Database mounted.
Database opened.
SQL> Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
Database "orcl" warm started.
LSNRCTL for Linux: Version 10.1.0.2.0 - Production on 27-FEB-2004 22:17:59
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.1.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.1.0.2.0 - Production
System parameter file is /u01/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xavan_fi
xe)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 10.1.0.2.0 - Production
Start Date 27-FEB-2004 22:17:59
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.1.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.1.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=xavan_fi
xe)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
But when i try to connect with sqlplus:
oracle@xavan_fixe oracle $ sqlplus
SQL*Plus: Release 10.1.0.2.0 - Production on Ven. Févr. 27 22:19:32 2004
Copyright (c) 1982, 2004, Oracle. All rights reserved.
Enter user-name: scott
Enter password:
ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory

When you go to get connection you have to set the ORACLE_SID enviroment variable or use the service name in the string to get connection.
Joel Pérez

Oracle 10G Performance Tuning Documents

Hi all
Can any one tell where can I get the oracle 10G Performance Tuning materials(PDF),Documents.
Thanks in advance

http://download-uk.oracle.com/docs/cd/B19306_01/server.102/b14211.pdf

Oracle 10g performance is slow

Dear Exports
how we can imporve the Oracle 10g performance........we are upgrading from Oracle 8 to Oracle 10g. Windows platform. and using Oracle developer 6 as front end .
thanks in advance

Do you have statistics gathered on the tables in the 8i database? Can you post the explain plan for the query in both databases?
Since you know what SQL is having poor performance you can use TKPROF and SQL TRACE to see where your query is spending its time.
Try the following:
alter session set timed_statistics=true;
alter session set max_dump_file_size=unlimited;
alter session set tracefile_identifier='BAD_SQL';
alter session set events '10046 trace name context forever, level 12';
<insert sql with poor response time>
disconnect
Use the TKPROF utility on the file found in USER_DUMP_DEST that contains the string BAD_SQL.
For information on how to interrupt the TKPROF output, see the following link.
http://download-east.oracle.com/docs/cd/B19306_01/server.102/b14211/sqltrace.htm

Oracle 10g Installation Problem on SUSE Linux 10

Hello Friends,
I want to install SAP Solution Manager 7.0 with Oracle 10g on SUSE Linux 10.0.
But, while starting the Installation i am getting following Errors.
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1,
asianux-2 or SuSE-10
                                      Passed
All installer requirements met.
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2009-04-22_03-59-38PM. Please wait ...
Error in writing to directory /tmp/OraInstall2009-04-22_03-59-38PM. Please ensure that this directory is
writable and has atleast 60 MB of disk space. Installation cannot continue.
: Success
I have checked the Permissions and the Size of /tmp Directory, which is as followed:
drwxr-xr-x 11 root root    0 2009-04-22 21:19 sys
drwxrwxrwt 52 root root 1824 2009-04-22 16:00 tmp
drwxr-xr-x 15 root root 408 2009-04-19 14:43 usr
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda10             2104376     73112   2031264   4% /tmp
I am starting the Oracle 10g Installation within orasm7 User which is a member of dba, users, disk groups.
The directories which are created upon starting the Oracle Installation in /tmp directory are having the situations as followed:
drwxr-xr-x 3 orasm7   dba          128 2009-04-21 18:41 OraInstall2009-04-21_06-41-14PM
drwxr-xr-x 3 orasm7   dba          128 2009-04-21 18:41 OraInstall2009-04-21_06-41-25PM
drwxr-xr-x 3 orasm7   dba          128 2009-04-22 15:59 OraInstall2009-04-22_03-59-38PM
The Oracle Installation log is as follwoed:
Using paramFile: /home/MyData/51031676/database/install/oraparam.ini
Checking installer requirements...
Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1, asianux-2 or SuSE-10
                                      Passed
All installer requirements met.
The commandline for unzip:
/home/MyData/51031676/database/install/unzip -qqq ../stage/Components/oracle.swd.jre/1.4.2.0.8
/1/DataFiles/\*.jar -d /tmp/OraInstall2009-04-22_03-59-38PM
I have set DISPLAY variable in this way before starting Installation:
DISPLAY=$HOSTNAME:0.0
export DISPLAY
I tried to search the solution over the internet for this kind of problem, but i am not able to find its solution. Even i tried to start the Orale installation using this parameter: ./runInstaller ignoreSysPrereqs, but still it is giving the same unexpected error.
I have a doubt on File/Directory permissions which are created for Installation in /tmp. The umask setiing of the system is 0022.
Please, help me for this issue.
Thanks & Regards,
Bhavik G. Shroff

Hi Markus,
How are you ?
Thank you very much for your reply.
I was executing wrong runInstaller file. RUNINSTALLER is right file for starting the execution. But still i am facing the same error, which is as followed.
Preparing response files. Please wait:
======================================
Working on /home/MyData/51031676/database/SAP/SVRCUSTOM.RSP
/home/MyData/51031676/database/SAP/SVRCUSTOM.RSP --> /tmp/.orainst_rsp.27450: Done
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1, asianux-2 or SuSE-10
                                      Passed
All installer requirements met.
Preparing to launch Oracle Universal Installer from /home/orasm7/tmpora/OraInstall2009-04-22_05-25-26PM. Please wait ...
Error in writing to directory /home/orasm7/tmpora/OraInstall2009-04-22_05-25-26PM. Please ensure that
this directory is writable and has atleast 60 MB of disk space. Installation cannot continue.
: Success
SHROFF:~ # cd /home/orasm7/tmpora/
SHROFF:/home/orasm7/tmpora # ll
total 0
drwxr-xr-x 3 orasm7 dba 128 Apr 22 17:25 OraInstall2009-04-22_05-25-26PM
SHROFF:/home/orasm7/tmpora # cd OraInstall2009-04-22_05-25-26PM/
SHROFF:/home/orasm7/tmpora/OraInstall2009-04-22_05-25-26PM # ll
total 4
drwxr-xr-x 2 orasm7 dba 304 Apr 22 17:25 images
-rwxr-xr-x 1 orasm7 dba 504 Apr 22 17:25 installActions2009-04-22_05-25-26PM.log
SHROFF:/home/orasm7/tmpora/OraInstall2009-04-22_05-25-26PM #
I have a doubt on tmp_netca_file & tmp_dbca_file variable.
Please give your suggestion for the same.
Regards,
Bhavik G. Shroff
Edited by: Bhavik G. Shroff on Apr 22, 2009 2:10 PM

Oracle 10g installation problem on RHEL4

hi,
I am installing oracle 10g on red hat linux. I read the complete documentation and the mailing lists and have installed all the required RPMs.
When I start install, I get the following three errors:
error in invoking target 'install' of makefile
'u/01/app/oracle/ctx/lib/ins_ctx.mk'.
error in invoking target 'agent nmo nmb' of makefile
'u/01/app/oracle/ctx/lib/ins_sysman.mk'.
error in invoking target 'all_no_orcl' of makefile
'u/01/app/oracle/ctx/lib/ins_rdbms.mk'.
This error is popped up when the link part is going on. I am installing the standard edition and have done all the possible things mentioned in the documentation.
Can someone pls help me understand where is the problem
thanx in advance,
jayesh

i had the same sequence of errors on installing (10g on Redhat AS4)
The first error (INFO: /usr/bin/ld: crt1.o: No such file: No such file or directory
) is solved by installing the following package (you need the glibc-devel i386 package installed as well as the x86_64 version)
up2date --arch=i386 glibc-devel
The second error, I am currently stuck at (error in invoking target agent nmo nmb...of makefile ins_sysman.mk)
INFO: /app/oracle/oracle/product/10.2.0/db_1/lib32//libnls10.a(lmsagb.o)(.text+0xa3): In function `lmsagbcmt':
: undefined reference to `SltsPrRead'
/app/oracle/oracle/product/10.2.0/db_1/lib32//libnls10.a(lmsagb.o)(.text+0x10a):
Any ideas, people, please?
Cheerio,
Nic

OracleAS 10g Installation Problem on RedHat AS 3.0

Hi
I need to install OracleAS 10g on RedHat AS 3.0 and it seems that I need a patch (Patch 3006854) and the installation is impossible without it.I just started using oracleAS 10g and I dont have any metalink id.
I think something is wrong here.
a free trial version with a commercial patch !!!
can any one please help me out.
regards yashar

dear fredrik
I tried to install it according to the installation guid on http://www.oracle-base.com/articles/10g/OracleAS10gInstallationOnRedHatAS3.php as you see it asked for installation of a patch.
and yes I tried to install it without installing this patch and I got an error saying that I am missing a file named ld.so in /etc.I thought it might be connected to that patch.
beside when I was looking for the solution to my problem I saw many people having the same problem and asking the exact same question.
please notify about any solution that you think might help me solving this problem. I am in a hurry
regards yashar

Oracle 10G installation problem, and errors on SOLARIS 10 x86

HI.
I installed the last version of oracle 10g on a x86 SOLARIS 10 system.
When the installer arrived at Configuration assistants, the window is stopping, and I can't see forward. But when I look at the installAction.log, the installation is checked as OK (?).
When I launch sqlplus, and startup inside, it is said the ora-00205 error (problem with control files), and in the end, I'm really suprised there's no the database I told the installer to create at the beginning. But should I be surprised? As I didn't see really the end of the installation, and the installer didn't propose me the PATH where to install the DB, well, I guess there's something wrong.
Could anybody tell me how to solve these problems, please?
Thank you :)

Two options:
1. Create database using DBCA - execute $ORACLE_HOME/bin/dbca
2. Create database manually (without DBCA)

OracleAS 10g Installation Problem on Windows2000

I install OracleAS 10g for Business Intelligence et Forms
While demanding to register for Oracle Internet Directory,
I seize:
host: liu-gwej0o37upx (its my machines name in that I install Oracle9i Server)
port : 389
then this is a message of error that the host and port art not correct.
So I check the connection to Oracle directory manager. I have a problems connection with a massage: server liu-gwej0o37upx is not started. But Im sure that my server is started.
Thanks for someone to help me to resovle this problem
florent

anyone has clue

Oracle 10g 2 problem install on Solution manager

Hi,
I'm installing Sap Solution Manager 4 on Red Hat Enterprise
Linux ES release 4 (Nahant Update 5) with Oracle 10g 10.2.0.1.0.
I have an Oracle error message :
/oracle/SM1/102_64/lib32//libnls10.a(lxecg2e.o)(.text+0x681): In function `lxecg2e':
: undefined reference to `ldxdtd'
There are a lot of message of this type with different end of message :
/oracle/SM1/102_64/lib32//libnls10.a(lxecg2i.o)(.text+0xf0): In function `lxecg2i':
: undefined reference to `ldxnbeg'
But it's always a problem with libnls10.a(lxecg2i.o)....
Someone have alreaday had this problem before?
Thx for all.

you should install 10.2.0.2 with latest patches.
please read Note 871735 - Current patch set for Oracle 10.2.0

Oracle 10g forms problem

hi
can any body help me?
i have installed oracle developer 10g with oracle 8i database
when i run any form including the test.fmx
it always ask to install JInitiator although it has been installed (appears in the control panel and in c:\program file\oracle folder)
another problem appears after completing the installtion of JInitiator
the browser views the HTML tags of the form not execute it
so does any body have any idea???

From the Windows Start menu, choose Run, type regedit, and click OK.
Expand the registry nodes HKEY_LOCAL_MACHINE > SOFTWARE > ORACLE.
Make a backup copy of this key by right-clicking it and selecting Export from the context menu.
Select one of the HOME nodes beneath the ORACLE node (the one for Developer Suite). Ensure that you have opened the correct node by verifying that the key FORMS90_PATH exists in that node.
From the Registry Editor menu, select Edit > New > String Value. Type in the name FORMS90_HIDE_OBR_PARAMS.
Double-click FORMS90_HIDE_OBR_PARAMS and in the Value data field enter false, then click OK.
Close the registry editor.
Now when you run a form from Forms Builder, it should show parameters, including userid, in the URL, but it should run fine.
15. Set the path for Forms Builder to locate icons:
a) Double-click the UI_ICON key to open it for editing.
b) For the value data, append the path to the .gif file that you will use for the
button icon, which is the \icons subdirectory of your lab directory. Separate this
path from the remainder of the string with a semicolon; for example:
;e:\labs\lab\icons, then click OK.

Oracle 10g / iSQL+ Problem

Greetings all!
I've got problem with Oracle 10g / iSQL+ that maybe someone here has seen.
I've got two instructors who show their students how to run SQL queries. Whenever more than about 10 students access iSQL+ it crashes and I have to restart the service or in some cases restart the server entirely.
The machine I'm using is NOT a server class machine. It is a single 2.66 GHz processor with 1 Gig of RAM running Server 2003. All it does is handle Oracle 10g and nothing else.
I've heard elsewhere that this will happen running 10g on a single processor machine. Can someone tell me what the minimum requirements are for 10g to run smoothly?

Fine if it is a licensed version & if you have the metalink id and password, you can easily update the patches from the EM console(http:\\localhost:....\em. where you have the option to download the patch provided you specify ur metalink id and password...

ORA-12952 and Oracle 10g XE problem with migration to 11g XE

Hi, all
My DB (Oracle 10g XE) reach storage limit. I have tried to migrate to 11g XE version but unsuccessful.
For migration I used next manual: http://download.oracle.com/docs/cd/E17781_01/install.112/e18803/toc.htm#XEINW136
expdp returned next error:
Processing object type DATABASE_EXPORT/SCHEMA/CLUSTER/INDEX
Processing object type DATABASE_EXPORT/SCHEMA/TABLE/TABLE
ORA-39125: Worker unexpected fatal error in KUPW$WORKER.CREATE_OBJECT_ROWS while calling FORALL [TABLE]
ORA-12952: The request exceeds the maximum allowed database size of 4 GB
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 116
ORA-06512: at "SYS.KUPW$WORKER", line 6248
----- PL/SQL Call Stack -----
object line object
handle number name
2D6F0304 14916 package body SYS.KUPW$WORKER
2D6F0304 6300 package body SYS.KUPW$WORKER
2D6F0304 5638 package body SYS.KUPW$WORKER
2D6F0304 2145 package body SYS.KUPW$WORKER
2D6F0304 6861 package body SYS.KUPW$WORKER
2D6F0304 1262 package body SYS.KUPW$WORKER
285BD50C 2 anonymous block
Next I have tried to garbage some information from DB but I got some as "UNDO cannot get next block" error.
What else can I do to migrate the data from 10g with limitation problem to 11g?
Thank You in advance.

There is output from SQL:
"OWNER"; "TABLESPACE_NAME"; "COUNT(*)"; "SIZE_MB"
"A1"; "USERS"; "899"; "3995,9375"
"SYS"; "SYSTEM"; "980"; "323,1875"
"FLOWS_020100";"SYSAUX"; "658"; "297,625"
"SYS"; "SYSAUX"; "626"; "151,125"
"XDB"; "SYSAUX"; "753"; "84,5"
"SYSTEM";"SYSTEM"; "259"; "31,75"
"SYS"; "UNDO"; "10"; "20,25"
"MDSYS"; "SYSTEM"; "96"; "12,25"
"SYSTEM";"SYSAUX"; "109"; "6,8125"
"CTXSYS";"SYSAUX"; "74"; "4,625"
"D1"; "USERS"; "14"; "3,5625"
"DBSNMP";"SYSAUX"; "25"; "1,5625"
"HR"; "USERS"; "25"; "1,5625"
"FLOWS_FILES";"SYSAUX"; "7"; ",5"
"OUTLN"; "SYSTEM"; "8"; ",5"
"TSMSYS";"SYSAUX"; "4"; ",25"
1. When I tried to delete some old data from USERS dataspase by some PROCEDURE I got the next error:
ERROR at line 1:
ORA-30036: unable to extend segment by 8 in undo tablespace 'UNDO'
This problem I solved. PROCEDURE generate huge buffer for transaction. Therefore I deleted the old data by small pieces.
After I have deleted the old data the Application start to comunicate with database without ORA-12952 error.
2. I've reduced the size of SYSAUX (http://remidian.com/oracle/purging-sysaux-tablespace-purging-awr-reports.html) down to 94%
3. I has SYSTEM tablespace 100% full. When I've tried to resize the SYSTEM table up I got the ORA-12952. Then I've increased the SYSTEM table size by 1M. In such way I got additional 9Mb for the SYSTEM tablespace (from 360Mb to 369Mb 98%). Is any other way to reduce of the SYSTEM tablespace filling?
4. Next (http://wiki.oracle.com/page/Data+Pump+Export+%28expdp%29+and+Data+Pump+Import%28impdp%29)
on the step: $ expdp system/<password> DIRECTORY=expdp_dir DUMPFILE=expfull.dmp FULL=y LOGFILE=expfull.og
i got the error:
Processing object type DATABASE_EXPORT/SCHEMA/TABLE/TABLE
ORA-39125: Worker unexpected fatal error in KUPW$WORKER.CREATE_OBJECT_ROWS while calling FORALL [TABLE]
ORA-12952: The request exceeds the maximum allowed database size of 4 GB
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 116
ORA-06512: at "SYS.KUPW$WORKER", line 6248
There is my last state of the tablespace filling:
"Tablespace"; "Size (MB)"; "Free (MB)"; "% Free"; "% Used"
"UNDO"; "500"; "411,6875"; "82"; "18"
"SYSAUX"; "570"; "31,5"; "6"; "94"
"USERS"; "4180"; "178,875"; "4"; "96"
"SYSTEM"; "369"; "1,25"; "0"; "100"
"TEMP"; "291"; "0"; "0"; "100"

Oracle 10g performance issues

Hi,
We were using Oracle 9i in Solaris 5.8 and it was working fine with some minor performance issues. We formatted the Solaris server with new Solaris 5.10 and installed Oracle 10g.
Now we are experiencing some performance issues in Oracle 10g. This issue is arising when using through Websphere 5.1.
We have analyzed the schema, index is rebuild, SGA is 4.5 GB, PGA is 2.0 GB, Solaris RAM is 16 GB. Also we are having some Mat Views (possibly this may cause performance issues - not sure) due to refresh.
Also I have changed some parameters in init.ora file like query_rewrite = STALE_TOLERATED, open_cursors = 1500 etc.
Is is something due to driver from which the data is accessed. I guess it is not utilizing the indexes on the table.
Can anyone please suggest, what could be the issue ?

There are a lot of changes to the optimizer in the upgrade from 9i to 10g, and you need to be aware of them. There are also a number of changes to the default stats collection mechanism, so after your upgrade your statistics (hence execution paths) could change dramatically.


Greg Rahn has a useful entry on his blog about stats collection, and the blog al,so points to an Oracle white paper which will give you a lot of ideas about where the optimizer changes - which may help you spot your critical issues.

Otherwise, follow triggb's advice about using Statspack to find the SQL that is the most expensive - it's reasonably likely to be this SQL that has changed execution plans in the upgrade.

Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk

Oracle 10g performance tuning tools

hi,
can anyone please suggest me any oracle database tuning tool to use for improving the performance of the database?(oracle 10g)

Hi,
Do you want a tuning tool that does not require the user to have in-depth Oracle knowledge? If so, try here:
http://images.google.com/images?&q=ouija+board&um=1&ie=UTF-8&sa=N&tab=wi
Seriously, I like to use AWR and STATSPACK reports, and there are some freeware tools to help analyze them, one that I sponsor:
http://www.statspackanalyzer.com
For online tools, Oracle SQL Developer is a great way to get started, as-is the Oracle performance pack:
http://www.oracle.com/technology/products/database/sql_developer/index.html
For third-party tuning tools, look at Confio, quite good:
http://www.confio.com/
Hope this helps. . .
Don Burleson
Oracle Press author
Author of “Oracle Tuning: The Definitive Reference”
http://www.dba-oracle.com/bp/s_oracle_tuning_book.htm

Oracle 10G performance problems

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