10.2 Oracle sapdata layout - performance issues?

Can someone provide the pros cons of /oracle layout for ERP 6.0 production system?
Is it better to build several additional sapdatas.
Initially SAP loads data into sapdata 1 through sapdata4.....
Has anyone seen any possible performance issues only using sapdata1-4 especially with a 3 TB DB running 10.2.04?
Any advice is appriciated...
Thanks
Mikie B

Hello Mikie,
> Initially SAP loads data into sapdata 1 through sapdata4....
What do you mean with this?
> Is it better to build several additional sapdatas.
This depends on your storage. Normally if you have a high-range SAN storage it shouldn't matter. I have seen special cases where some disk ranks were overloaded .. but normally you should not think about that. If you don't have SAN and your load needs to be spread .. this is something different.
> Has anyone seen any possible performance issues only using sapdata1-4 especially with a 3 TB DB running 10.2.04?
Our main logistic system is round about 3.6 TB and stored in eleven sapdata directories .. but this partitioning has nothing todo with performance issues ... the reason for that is some limitation on OS level.
Regards
Stefan
P.S.:
> Can someone provide the pros cons of /oracle layout for ERP 6.0 production system?
If i extend or create a new tablespace i am wondering every time .. why sap is creating a sub directory for every data file by default .. absolutely freaky.

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INSERT INTO TABLE_XYZ
SELECT F1,F2,F3
FROM TABLE_AB, TABLE_BC
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While looking at cost in Explain plan :
on 10g --> 62567
0n 11g --> 9879652356776
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SELECT F1,F2,F3
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CREATE TABLE AVN_WRK_F_RENEWAL_TRANS_T
"PKSRCSYSTEMID" NUMBER(4,0) NOT NULL ENABLE,
"PKCOMPANYCODE" VARCHAR2(8 CHAR) NOT NULL ENABLE,
"PKBRANCHCODE" VARCHAR2(8 CHAR) NOT NULL ENABLE,
"PKLINEOFBUSINESS" NUMBER(4,0) NOT NULL ENABLE,
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Explain Plan(With Insert Statement and Query):_
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VIEW PUSHED PREDICATE     Object owner=ODS          Cost=116615788     Cardinality=1     Bytes=121
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Sudhakar P wrote:
the below query its take more than one minute while updating the records through pro*c.
Execute 562238 161.03 174.15 7 3932677 2274833 562238Hi Sudhakar,
If the database is capable of executing 562,238 update statements in one minute, then that's pretty good, don't you think.
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Hai everybody,
In oracle 11g 11.2.0.1.0 we are developing business application using java, Our developers said Database performance is very poor it takes more time to retrieve values from database, they check froantend and middleware that has no problem, if the query returns less values or rows it takes little more time. How can i solve this problem? please help me
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hai,
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ORCL 1295420332 orcl 1 11.2.0.1.0 NO node6.node6-
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2 1,561M (100%) 480M (30.7%) 432M (27.7%) 4.0M (0.3%)
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Analysis End Time: 04-Oct-12 16:59:33
Elapsed Time: 15.3 (mins)
Begin Data Source: V$ACTIVE_SESSION_HISTORY
End Data Source: V$ACTIVE_SESSION_HISTORY
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Average Active Sessions: 0.00
Avg. Active Session per CPU: 0.00
Report Target: None specified
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Avg Active
Event Event Class % Event Sessions
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Top Background Events DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
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os thread startup Concurrency 33.33 0.00
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No data exists for this section of the report.
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SYS$USERS UNNAMED 33.33 UNNAMED 33.33
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Top SQL Command Types DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
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the 'Top Sessions running PQs' section for such statistics.
Sid, Serial# % Activity Event % Event
User Program # Samples Active XIDs
10, 1 33.33 CPU + Wait for CPU 33.33
SYS [email protected] (ARC2) 1/917 [ 0%] 0
19, 148 33.33 null event 33.33
SYS [email protected] (J000) 1/917 [ 0%] 0
139, 3 33.33 os thread startup 33.33
SYS [email protected] (CJQ0) 1/917 [ 0%] 0
Top Blocking Sessions DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
No data exists for this section of the report.
Top Sessions running PQs DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
No data exists for this section of the report.
Top DB Objects DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
No data exists for this section of the report.
Top DB Files DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
No data exists for this section of the report.
Top Latches DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
No data exists for this section of the report.
Activity Over Time DB/Inst: ORCL/orcl (Oct 04 16:44 to 16:59)
-> Analysis period is divided into smaller time slots
-> Top 3 events are reported in each of those slots
-> 'Slot Count' shows the number of ASH samples in that slot
-> 'Event Count' shows the number of ASH samples waiting for
that event in that slot
-> '% Event' is 'Event Count' over all ASH samples in the analysis period
Slot Event
Slot Time (Duration) Count Event Count % Event
16:48:00 (2.0 min) 1 CPU + Wait for CPU 1 33.33
16:50:00 (2.0 min) 2 null event 1 33.33
os thread startup 1 33.33
End of Report
Regards Benk

Oracle DB Restart Performance Issues

Hi ,
When we try to restart the database we are not able to restart So we changed the following values
db_cache_size
java_pool_size
large_pool_size
optimizer_mode From Choose to First_rows
pga_aggregate_target
sga_max_size
shared_pool_size.
Database Got restarted . But Now Database is up and running. Issue is that SQL Statements/Stored Procedures are running for Long time.
Do we need to fine tune these parameters again. Please advice
Database Version : Oracle 9i
Database Size 10GB
Transactions: 5,000/Day
Cheers

user627752 wrote:
When we try to restart the database we are not able to restart Before changing anything, the first question would be : why ? error message ? ...
...So we changed the following values
db_cache_size
java_pool_size
large_pool_size
optimizer_mode From Choose to First_rows
pga_aggregate_target
sga_max_size
shared_pool_size.Amazing. Why have you decided to change all those in one shot ? Base on what ?
>
... Issue is that SQL Statements/Stored Procedures are running for Long time.Right now, you are not able to figure out what change make your database slow, nothing surprising in fact.
Rollback all your changes and try again one by one, based on facts (statspack).
But first of all, reply to the first question above.
Nicolas.

AS + Oracle DB 10g performance issue

Hi,
My company is currently exploring Oracle Portal and Discoverer. I have a question and would really appreciate if anyone can help me.
I install the AS infrastructure and the database in the same machine. Currently when I log in to the portal for the first time of the day, it is always very slow. If I install the IAS and database in separate machines, will this give a significant improvement in the response time for my portal? What are the implications of installing this in 2 machines instead of 1?
Thanks :)

Two things -
With Portal and Discoverer, your AS setup probably includes both mid-tier and Infrastructure installations. (is this a BI & F type mid-tier?) The Infrastructure commonly installs its own database for Metadata repositories etc. So this machine has 2 x AS instances and 2 x Database server, correct? An awful lot for a single machine, I'd guess.
Do you restart the machine first thing each day? The first time a web app loads it has a startup latency. Monday morning, sort of. There is a lot of components involved and they all need to load up some stuff in memory to be able to do some work. This takes time (disk-> mem is very very slow, for one thing).
2 machines means more complex setup and hopefully a 'quicker' solution.
Depending on requirements, you may want one machine for customer/your own database, one machine for AS database and one for AS mid-tier.... What kind of platform are you planning on (hardware + os)?

Oracle Forms 6i performance issue

Hi All,
I have one query form.
Im using cursor in form and fetch the data directly and assign to the form block values.
There are two table involved here.
Table1 has 1 crore record.
Table2 has 4 crore record.
The query fetch the data 50-500 records.
In backend the select query is fast.
In front end ,it is taking time to load the data in grid.
How can i fetch the data quickly in front end.
Please help me out on this.
Regards,
Oracle1001

You can read documentation about this block property:
1.Query Array Size
2. Number of Records Buffered
3. Query All Records

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).
Does anyone know what could be going on?
Is anybody else having this similar behavior?
We change from SQL-Server so we are not the world expert on the matter. But we want a reliable system nonetheless.
Please help us out, gives some tips, tricks, or guides
Thanks to all,
Frank

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.
Can some one help me?
Thanks,
Frank

Performance issue in oracle 11.1.0.7 version

Hi ,
In production environment we have some cronjobs are scheduled, they will run every Saturday. One of the cronjob is taking more time to finish the job.
Previous oracle version is 10.2.0.4, that time it was taking 36hrs to complete it. After upgrading to 11gr1, now it's taking 47hrs some time 50hrs to finish.
I have asked my production DBA take AWR report after finish the cronjob.
Now he sent the AWR report, but i don't know how to read it. Can you please help me to read the AWR reports, and i need to give some recommendations to reduce the overall running time.
I don't know how to attach the AWR report here.
Please help me on this.
Thanks
Shravan Kumar

Hi,
Now he sent the AWR report, but i don't know how to read it. Can you please help me to read the AWR reports, and i need to give some recommendations to reduce the overall running time.An't you a DBA? Probably you should seek help of you DBA to read the AWR and mean while you should also have AWR of 10g where this job was running previously so that you can compare the things.
Did you do a testing before upgrade? you SHOULD have done a thorough testing of your applications/reports before the upgrade and resolve the performance issues before the production upgrade.
Mean while you do investigation, you can set optimizer_features_enable=10.2.0.4 for only cron job session to check whether you job returns to same 26 hours time
alter session set optimizer_features_enable='10.2.0.4';Salman

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

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