LDAP Performance Tuning In Large Deployments - numconnect parameter

LDAP Performance Tuning In Large Deployments - numconnect parameter

Tuning the LDAP connections
(numconnect parameter)
This parameter translates directly into the number of unidas processes that will
be launched when Calendar Server is started. A process takes time to load, uses
RAM, and when active, CPU cycles. And, unidas maintains an LDAP client
connection to a Directory Server which can only support a fixed number of these
connections. Since a calendar client does not require constant directory access
then having a matching number of unidas processes (to match uniengd "client"
processes) is not a good configuration.
Basically, a calendar client will make many requests for LDAP information, even
if the event information being retrieved is not currently view able. For example,
if the calendar client is displaying a week view with 20 events and each event
has 5 attendees, that will translate into at least 100 separate ldap search
requests for the given name and surname of each attendee. What this means is
that an "active" calendar user will require the services of a calendar server
unidas connection quite often.
Recommendation is that you increase the number of unidas connections
to match the number of "active" calendar users. Our experience is that
at least 20% of the number of configured users (lck_users from the
/users/unison/misc/unison.ini file) are actually logged in, and 10% of
those calendar users are active. For example, if have 3000 configured
calendar users, 600 configured are logged in and 10% of the logged in
are active, which would translate into at least 60 unidas connections.
Keep in mind that configured vs logged in vs active might be different at each
customer site, so please adjust your number of unidas connections
accordingly. To set this up, edit the /users/unison/log/unison.ini file and add
the numconnect parameter to the section noted (where "hostname" is the name of
your local host):
[LCK]
lck_users = 600
[hostname,unidas]
numconnect = 60
The calendar server will need to be restarted after making changes
to the /users/unison/log/unison.ini file, before those changes will
take effect.
Note: Due to some architectural changes in the Calendar Server 4.x, the total
number of DAS connections should never be set higher than 250.
Recommendations for num_connect would be a maximum of 5% of logged on users.
However, keep in mind that 250 das connections is a very high number.
Example:
[LCK]
lck_users = 5000
[hostname,unidas]
numconnect = 250

Thank you very much, I am looking from now for a good performance Tuning book writen by Jonathan Lewis. I dont think Jonathan can come to Spain and give lessons...Anyway I will email to him...
But, could you please clarify 2 points to me
1- Should I modify manually memory parameters like buffer cache, shared pool, large pool etc...if those areas are spotted Small and areas causes of performace problem in the AWR, ADDM or ASH reports even if the memory is automatic managed ?
In the case of yes, Why Oracle named it "Memory automatic managed" if I have to set some values of memory manually ?
2- When ADDM report suggests me to increase the SGA size; from where ADDM got this recomandation?. I mean is it recomandation based on statistics collected of Both Oracle and OS ? I am asking this question because, from our report I ran 3 weeks ago, ADDM suggested me to increase the SGA to 10GB (total memeory of the serve is 16GB), I did the change and from that moment the server is SWAP... and now ADDM report suggests me again to increase the SGA to 12GB .
Best reagards

Similar Messages

LDAP Performance Tuning In Large Deployments - dir_chkcredentialsonreadonly parameter

Calendar users are experiencing long delays in logging in or updating a meeting
with many attendees or dates. This is especially notificeable after migrating
from calendar server 1.0x to calendar server 3.x.

At this time, calendar performance can be improved by up to 30% by reconfiguring
the calendar server to bind to it's directory server either anonymously or with
a specific user. The default is to bind as the user requesting directory
information.

There is a parameter that can be added in the server configuration file by
editing the /users/unison/misc/unison.ini file. For anonymous binds
adding the dir_chkcredentialsonreadonly line to the DAS section:

[DAS]
dir_updcalonly = TRUE
dir_connection = persistent
dir_service = LDAP,v2,NSCP,1
enable = TRUE
dir_chkcredentialsonreadonly = FALSE

For binding as a specific user, also add the following to the LDAP,..,...,,
section:

[LDAP...]
binddn = dn
bindpwd = password

Going forward, we are working on other changes in the next versions of the
Calendar Client and Calendar Server to improve performance. Please check with
your Netscape Sales contact for announcements on the availability of these
versions.


Thank you very much, I am looking from now for a good performance Tuning book writen by Jonathan Lewis. I dont think Jonathan can come to Spain and give lessons...Anyway I will email to him...
But, could you please clarify 2 points to me
1- Should I modify manually memory parameters like buffer cache, shared pool, large pool etc...if those areas are spotted Small and areas causes of performace problem in the AWR, ADDM or ASH reports even if the memory is automatic managed ?
In the case of yes, Why Oracle named it "Memory automatic managed" if I have to set some values of memory manually ?
2- When ADDM report suggests me to increase the SGA size; from where ADDM got this recomandation?. I mean is it recomandation based on statistics collected of Both Oracle and OS ? I am asking this question because, from our report I ran 3 weeks ago, ADDM suggested me to increase the SGA to 10GB (total memeory of the serve is 16GB), I did the change and from that moment the server is SWAP... and now ADDM report suggests me again to increase the SGA to 12GB .
Best reagards

LDAP Performance Tuning In Large Deployments - LDAP request time

Tuning the LDAP request time 
(tr_recv_timeout and tr_recv_timeout parameters)

The default is 60 seconds, and since the time will vary at each site
for the length of time it will take an LDAP request to complete it
wouldn't hurt to increase this time to a large number as long as you
will have enough unidas connections available and since the calendar
user can always cancel their request. An example of how to change this
to 15 minutes, is to edit the /users/unison/log/unison.ini file and add the
following time-out parameters to the sections noted:

[ALL,unieng,ALL] 
tr_recv_timeout = 900

[hostname,unidas] 
tr_recv_timeout = 900

NOTE: The calendar server needs to be restarted after making changes
to the /users/unison/log/unison.ini file, before those changes will
take effect.

Tuning the LDAP request time 
(tr_recv_timeout and tr_recv_timeout parameters)

The default is 60 seconds, and since the time will vary at each site
for the length of time it will take an LDAP request to complete it
wouldn't hurt to increase this time to a large number as long as you
will have enough unidas connections available and since the calendar
user can always cancel their request. An example of how to change this
to 15 minutes, is to edit the /users/unison/log/unison.ini file and add the
following time-out parameters to the sections noted:

[ALL,unieng,ALL] 
tr_recv_timeout = 900

[hostname,unidas] 
tr_recv_timeout = 900

NOTE: The calendar server needs to be restarted after making changes
to the /users/unison/log/unison.ini file, before those changes will
take effect.

Performance Tuning Query on Large Tables

Hi All,
I am new to the forums and have a very specic use case which requires performance tuning, but there are some limitations on what changes I am actualy able to make to the underlying data. Essentially I have two tables which contain what should be identical data, but for reasons of a less than optimal operational nature, the datasets are different in a number of ways.
Essentially I am querying call record detail data. Table 1 (refered to in my test code as TIME_TEST) is what I want to consider the master data, or the "ultimate truth" if you will. Table one contains the CALLED_NUMBER which is always in a consistent format. It also contains the CALLED_DATE_TIME and DURATION (in seconds).
Table 2 (TIME_TEST_COMPARE) is a reconciliation table taken from a different source but there is no consistent unique identifiers or PK-FK relations. This table contains a wide array of differing CALLED_NUMBER formats, hugely different to that in the master table. There is also scope that the time stamp may be out by up to 30 seconds, crazy I know, but that's just the way it is and I have no control over the source of this data. Finally the duration (in seconds) can be out by up to 5 seconds +/-.
I want to create a join returning all of the master data and matching the master table to the reconciliation table on CALLED_NUMBER / CALL_DATE_TIME / DURATION. I have written the query which works from a logi perspective but it performs very badly (master table = 200,000 records, rec table = 6,000,000+ records). I am able to add partitions (currently the tables are partitioned by month of CALL_DATE_TIME) and can also apply indexes. I cannot make any changes at this time to the ETL process loading the data into these tables.
I paste below the create table and insert scripts to recreate my scenario & the query that I am using. Any practical suggestions for query / table optimisation would be greatly appreciated.
Kind regards
Mike
-------------- NOTE: ALL DATA HAS BEEN DE-SENSITISED
/* --- CODE TO CREATE AND POPULATE TEST TABLES ---- */
--CREATE MAIN "TIME_TEST" TABLE: THIS TABLE HOLDS CALLED NUMBERS IN A SPECIFIED/PRE-DEFINED FORMAT
CREATE TABLE TIME_TEST ( CALLED_NUMBER VARCHAR2(50 BYTE),
 CALLED_DATE_TIME DATE, DURATION NUMBER );
COMMIT;
-- CREATE THE COMPARISON TABLE "TIME_TEST_COMPARE": THIS TABLE HOLDS WHAT SHOULD BE (BUT ISN'T) IDENTICAL CALL DATA.
-- THE DATA CONTAINS DIFFERING NUMBER FORMATS, SLIGHTLY DIFFERENT CALL TIMES (ALLOW +/-60 SECONDS - THIS IS FOR A GOOD, ALBEIT UNHELPFUL, REASON)
-- AND DURATIONS (ALLOW +/- 5 SECS)
CREATE TABLE TIME_TEST_COMPARE ( CALLED_NUMBER VARCHAR2(50 BYTE),
 CALLED_DATE_TIME DATE, DURATION NUMBER )
COMMIT;
--CREATE INSERT DATA FOR THE MAIN TEST TIME TABLE
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 06:10:21 AM', 'MM/DD/YYYY HH:MI:SS AM'), 202);
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 08:10:21 AM', 'MM/DD/YYYY HH:MI:SS AM'), 19);
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 07:10:21 AM', 'MM/DD/YYYY HH:MI:SS AM'), 35);
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 09:10:21 AM', 'MM/DD/YYYY HH:MI:SS AM'), 30);
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 06:18:47 AM', 'MM/DD/YYYY HH:MI:SS AM'), 6);
INSERT INTO TIME_TEST ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 06:20:21 AM', 'MM/DD/YYYY HH:MI:SS AM'), 20);
COMMIT;
-- CREATE INSERT DATA FOR THE TABLE WHICH NEEDS TO BE COMPARED:
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'7721345675', TO_DATE( '11/09/2011 06:10:51 AM', 'MM/DD/YYYY HH:MI:SS AM'), 200);
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'00447721345675', TO_DATE( '11/09/2011 08:10:59 AM', 'MM/DD/YYYY HH:MI:SS AM'), 21);
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'07721345675', TO_DATE( '11/09/2011 07:11:20 AM', 'MM/DD/YYYY HH:MI:SS AM'), 33);
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'+447721345675', TO_DATE( '11/09/2011 09:10:01 AM', 'MM/DD/YYYY HH:MI:SS AM'), 33);
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'+447721345675#181345', TO_DATE( '11/09/2011 06:18:35 AM', 'MM/DD/YYYY HH:MI:SS AM')
, 6);
INSERT INTO TIME_TEST_COMPARE ( CALLED_NUMBER, CALLED_DATE_TIME,
DURATION ) VALUES (
'004477213456759777799', TO_DATE( '11/09/2011 06:19:58 AM', 'MM/DD/YYYY HH:MI:SS AM')
, 17);
COMMIT;
/* --- QUERY TO UNDERTAKE MATCHING WHICH REQUIRES OPTIMISATION --------- */
SELECT MAIN.CALLED_NUMBER AS MAIN_CALLED_NUMBER, MAIN.CALLED_DATE_TIME AS MAIN_CALL_DATE_TIME, MAIN.DURATION AS MAIN_DURATION,
 COMPARE.CALLED_NUMBER AS COMPARE_CALLED_NUMBER,COMPARE.CALLED_DATE_TIME AS COMPARE_CALLED_DATE_TIME,
 COMPARE.DURATION COMPARE_DURATION
FROM
SELECT CALLED_NUMBER, CALLED_DATE_TIME, DURATION
FROM TIME_TEST
) MAIN
LEFT JOIN
SELECT CALLED_NUMBER, CALLED_DATE_TIME, DURATION
FROM TIME_TEST_COMPARE
) COMPARE
ON INSTR(COMPARE.CALLED_NUMBER,MAIN.CALLED_NUMBER)<> 0
AND MAIN.CALLED_DATE_TIME BETWEEN COMPARE.CALLED_DATE_TIME-(60/86400) AND COMPARE.CALLED_DATE_TIME+(60/86400)
AND MAIN.DURATION BETWEEN MAIN.DURATION-(5/86400) AND MAIN.DURATION+(5/86400);

What does your execution plan look like?

Reg: Process Chain, query performance tuning steps

Hi All,
I come across a question like, There is a process chain of 20 processes.out of which 5 processes are completed at the 6th step error occured and it cannot be rectified. I should start the chain again from the 7th step.If i go to a prticular step i can do that particular step, How can i start the entair chain again from step 7.i know that i need to use a function module but i dont know the name of FM. Please somebody help me out.
Please let me know the steps involved in query performance tuning and aggregate tuning.
Thanks & Regards
Omkar.K

Hi,
Process Chain
Method 1 (when it fails in a step/request)
/people/siegfried.szameitat/blog/2006/02/26/restarting-processchains
How is it possible to restart a process chain at a failed step/request?
Sometimes, it doesn't help to just set a request to green status in order to run the process chain from that step on to the end.
You need to set the failed request/step to green in the database as well as you need to raise the event that will force the process chain to run to the end from the next request/step on.
Therefore you need to open the messages of a failed step by right clicking on it and selecting 'display messages'.
In the opened popup click on the tab 'Chain'.
In a parallel session goto transaction se16 for table rspcprocesslog and display the entries with the following selections:
1. copy the variant from the popup to the variante of table rspcprocesslog
2. copy the instance from the popup to the instance of table rspcprocesslog
3. copy the start date from the popup to the batchdate of table rspcprocesslog
Press F8 to display the entries of table rspcprocesslog.
Now open another session and goto transaction se37. Enter RSPC_PROCESS_FINISH as the name of the function module and run the fm in test mode.
Now copy the entries of table rspcprocesslog to the input parameters of the function module like described as follows:
1. rspcprocesslog-log_id -> i_logid
2. rspcprocesslog-type -> i_type
3. rspcprocesslog-variante -> i_variant
4. rspcprocesslog-instance -> i_instance
5. enter 'G' for parameter i_state (sets the status to green).
Now press F8 to run the fm.
Now the actual process will be set to green and the following process in the chain will be started and the chain can run to the end.
Of course you can also set the state of a specific step in the chain to any other possible value like 'R' = ended with errors, 'F' = finished, 'X' = cancelled ....
Check out the value help on field rspcprocesslog-state in transaction se16 for the possible values.
Query performance tuning
General tips
Using aggregates and compression.
Using less and complex cell definitions if possible.
1. Avoid using too many nav. attr
2. Avoid RKF and CKF
3. Many chars in row.
By using T-codes ST03 or ST03N
Go to transaction ST03 > switch to expert mode > from left side menu > and there in system load history and distribution for a particual day > check query execution time.
/people/andreas.vogel/blog/2007/04/08/statistical-records-part-4-how-to-read-st03n-datasets-from-db-in-nw2004
/people/andreas.vogel/blog/2007/03/16/how-to-read-st03n-datasets-from-db
Try table rsddstats to get the statistics
Using cache memoery will decrease the loading time of the report.
Run reporting agent at night and sending results to email.This will ensure use of OLAP cache. So later report execution will retrieve the result faster from the OLAP cache.
Also try
1. Use different parameters in ST03 to see the two important parameters aggregation ratio and records transferred to F/E to DB selected.
2. Use the program SAP_INFOCUBE_DESIGNS (Performance of BW infocubes) to see the aggregation ratio for the cube. If the cube does not appear in the list of this report, try to run RSRV checks on the cube and aggregates.
Go to SE38 > Run the program SAP_INFOCUBE_DESIGNS
It will shown dimension Vs Fact tables Size in percent.If you mean speed of queries on a cube as performance metric of cube,measure query runtime.
3. --- sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
4. Run your query in RSRT and run the query in the debug mode. Select "Display Aggregates Found" and "Do not use cache" in the debug mode. This will tell you if it hit any aggregates while running. If it does not show any aggregates, you might want to redesign your aggregates for the query.
Also your query performance can depend upon criteria and since you have given selection only on one infoprovider...just check if you are selecting huge amount of data in the report
Check for the query read mode in RSRT.(whether its A,X or H)..advisable read mode is X.
5. In BI 7 statistics need to be activated for ST03 and BI admin cockpit to work.
By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
/people/vikash.agrawal/blog/2006/04/17/query-performance-150-is-aggregates-the-way-out-for-me
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
You can go to T-Code DB20 which gives you all the performance related information like
Partitions
Databases
Schemas
Buffer Pools
Tablespaces etc
use tool RSDDK_CHECK_AGGREGATE in se38 to check for the corrupt aggregates
If aggregates contain incorrect data, you must regenerate them.
Note 646402 - Programs for checking aggregates (as of BW 3.0B SP15)
Thanks,
JituK

Performance tuning of database using DBACOCKPIT

Hiii Experts,
I have installed new server with OS:- Windows server 2012 and DB:- Sybase ASE 15.07.
Now I want to perform performance tuning of SAP and Database, so for that I have configured
DBACOCKPIT but I could not change the parameter values so could you tell me how to change
parameter values and how to use DBACOCKPIT for performance tuning.
Thank you,
Regards,
Omkar M.

DBA_Guide wrote:
Reports running slow, not sure if database is using Start transformation for the Datawarehouse Database.
Used hint */+ STAR_TRANSFORMATION */, still no performance increase.
Checked database parameter -
SQL> show parameter star;
NAME                                 TYPE        VALUE
dg_broker_start                      boolean     FALSE
fast_start_io_target                 integer     0
fast_start_mttr_target               integer     0
fast_start_parallel_rollback         string      LOW
log_archive_start                    boolean     FALSE
star_transformation_enabled          string      TRUE
Any Help is appreciated.
Thanks!
If star transformation was not the cause of the slowness, of course it won't make it faster.
I bet you any number of other different hints will result in no change in performance.
This is like replacing gas tank on your car with a LARGER tank & filling it with more gasoline to make the car go faster.
The amount of gasoline is not a factor that limits the speed of your car.

Inputs to setup an Oracle performance tuning Lab.

Hi All,We are planning to setup a Performance tuning lab at our unit.The key areas which needs to be addresses for this lab is 1)Architecture of the Database 2)Having Large volume of data 3)Producing high volume transactions.
Request you to provide your valuable inputs on how to setup the lab.

user11266214 wrote:
Hi All
Thanks for your responses.We are not doing the load testing.We have a linux server on which Oracle 11g running.We would like to simulate the real time work environment on which we train people to perform the performance tuning tasks.Performance tuning tasks comprise of Server tuning,Oracle parameter tuning and SQL tuning.
Request you to provide inputs on the approach we need to take up for setting up such kind of lab.
Thanks in anticipation.Swingbench as said before

Performance Tuning in IR

Hello All,
We have created some reports using Interactive Reporting Studio. The volume of data in that Oracle database are huge and in some tables of the relational database are having above 3-4 crores rows individually. We have created the .oce connection file using the 'Oracle Net' option. Oracle client ver is 10g. We earlier created pivot, chart and report in those .bqy files but had to delete those where-ever possible to decrease the processing time for getting those report generated.
But deleting those from the file and retaining just the result section (the bare minimum part of the file) even not yet helped us out solving the performance issue fully. Still now, in some reports, system gives error message 'Out of Memory' at the time of processing those reports. The memory of the client PCs,wherefrom the reports are being generated are 1 - 1.5 GB. For some reports, even it takes 1-2 hours for saving the results after process. In some cases, the PCs gets hanged at the time of processing. When we extract the query of those reports in sql and run them in TOAD/SQL PLUS, they take not so much time like IR.
Would you please help us out in the aforesaid issue ASAP? Please share your views/tips/suggestions etc in respect of performance tuning for IR. All reply would be highly appreciated.
Regards,
Raj

SQL + & Toad are tools that send SQL and spool results; IR is a tool that sends a request to the database to run SQL and then fiddles with the results before the user is even told data has been received. You need to minimize the time spent by IR manipulating results into objects the user isn't even asking for.
When a request is made to the database, Hyperion will wait until all of the results have been received. Once ALL of the results have been received, then IR will make multiple passes to apply sorts, filters and computed items existing in the results section. For some unknown reason, those three steps are performed more inefficiently then they would be performed in a table section. Only after all of the computed items have been calculated, all filters applied and all sorts sorted, then IR will start to calculate any reports, charts and pivots. After all that is done, the report stops processing and the data has been "returned"
To increase performance, you need to fine tune your IR Services and your BQY docs. Replicate your DAS on your server - it can only transfer 2g before it dies, restarts and your requested document hangs. You can replicated the DAS multiple times and should do so to make sure there are enough resources available for any concurrent users to make necessary requests and have data delivered to them.
To tune your bqy documents...
1) Your Results section MUST be free of any sorts, filters, or computed items. Create a staging table and put any sorts or local filters there. Move as many of your computed items to your database request line and ask the database to make the calculation (either directly or through stored procedures) so you are not at the mercy of the client machine. Any computed items that cannot be moved to the request line, need to be put on your new staging table.
2) Ask the users to choose filters. Programmatically build dynamic filters based on what the user is looking for. The goal is to cast a net only as big as the user needs so you are not bringing back unnecessary data. Otherwise, you will bring your server and client machines to a grinding halt.
3) Halt any report pagination. Built your reports from their own tables and put a dummy filter on the table that forces 0 rows in the table until the report is invoked. Hyperion will paginate every report BEFORE it even tells the user it has results so this will prevent the user from waiting an hour while 1000s of pages are paginated across multiple reports
4) Halt any object rendering until request. Same as above - create a system programmically for the user to tell the bqy what they want so they are not waiting forever for a pivot and 2 reports to compile and paginate when they want just a chart.
5) Saved compressed documents
6) Unless this document can be run as a job, there should be NO results stored with the document but if you do save results with the document, store the calculations too so you at least don't have to wait for them to pass again.
7) Remove all duplicate images and keep the image file size small.
Hope this helps!
PS: I forgot to mention - aside from results sections, in documents where the results are NOT saved, additional table sections take up very, very, very small bits of file size and, as long as there are not excessively larger images the same is true for Reports, Pivots and Charts. Additionally, the impact of file size only matters when the user is requesting the document. The file size is never an issue when the user is processing the report because it has already been delivered to them and cached (in workspace and in the web client)
Edited by: user10899957 on Feb 10, 2009 6:07 AM

Oracle Performance Tuning

Hi,
Our organization recently also encounter Oracle DB performance issue, whereby I am searching for information for us to going into diagnostic the problem and finding the root cause of this performance problem.
I had read through this old article where I found a number of points being highlighted was a good start for us, and just about this port, we would like to understand what in details of AIX 5.3 and asynch I/O turned-on had to do with Oracle DB performance, unfortunately the URL given in the article (possible due to the twas back in 2006), is no longer valid (http://www.oracle.com/technology/pub/articles/lewis_cbo.html), I tried that but the pages being redirected to (http://www.oracle.com/technetwork/articles/index.html).
May I know, would you able to provide me the new URL path for the mentiened AIX 5.3 asynch I/O turned-on related information?
Our environment:
1) OS AIX 5.3
2) Oracle DB 10g
(If I have the AWR Report, would it be better possition for you to help us?)
Thank you in advanced.
Best Regards,
KaiLoon Kok
Edited by: 991132 on Feb 28, 2013 11:19 PM

Hi,
performance tuning is a very large argument and the causes of degradation may be many.
There are several consideration that You have to do like:
- which kind of application is running on the DB
- which kind of optimizer is used
- the striping of the data files across the disks
- the dimension of the DB block
- the waits that DB encounters
- many other things like SORT_AREA_SIZE, HASH_AREA_SIZE, etc.
To begin Yr analysis use the utlbstat.sql and utlestat.sql scripts provided in the $ORACLE_HOM/rdbms/admin directory and check the conditions of the DB.
Increasing the SGA, like You've done, may not be the solution, somtimes it may instead decrease the overall performances.
Also check in wich case the DB is slow, ex. executing some particular procedure, excuting a particular query, ....
Try to identify the better the DB and then try to resubmit Yr problem.
Bye Max
null

Performance Tuning 10g

Hi All,
I had given a task to tune oracle 10g database. I am really new in memory tuning although I had some SQL Tuning earlier. My server is in remote location and I can not login to Enterprise Manager GUI. I will be using SQL Developer or PL/SQL Developer for this. My application is web based application.
I have following queries with this respect:
- How should I start... Should I use tkprof or AWR.
- How to enable these tools.
- How to view its reports
- What should I check in these reports
- Will just increasing RAM improves performance or should we also increase Hard Disk?
- What is CPU Cost and I/O?
Please help.
Thanks & Regards.

dbdan wrote:
Hi All,
I had given a task to tune oracle 10g database. I am really new in memory tuning although I had some SQL Tuning earlier. My server is in remote location and I can not login to Enterprise Manager GUI. I will be using SQL Developer or PL/SQL Developer for this. My application is web based application.
I have following queries with this respect:
- How should I start... Should I use tkprof or AWR.
- How to enable these tools.
- How to view its reports
- What should I check in these reports
- Will just increasing RAM improves performance or should we also increase Hard Disk?
- What is CPU Cost and I/O?
Please help.
Thanks & Regards.Here is something you might try as a starting point:
Capture the output of the following (to a table, send to Excel, or spool to a file):
SELECT
STAT_NAME,
VALUE
FROM
V$OSSTAT
ORDER BY
STAT_NAME;
SELECT
STAT_NAME,
VALUE
FROM
V$SYS_TIME_MODEL
ORDER BY
STAT_NAME;
SELECT
EVENT,
TOTAL_WAITS,
TOTAL_TIMEOUTS,
TIME_WAITED
FROM
V$SYSTEM_EVENT
WHERE
WAIT_CLASS != 'Idle'
ORDER BY
EVENT;Wait a known amount of time (5 minutes or 10 minutes)
Execute the above SQL statements again.
Subtract the starting values from the ending values, and post the results for any items where the difference is greater than 0. The Performance Tuning Guide (especially the 11g version) will help you understand what each item means.
To repeat what Ed stated, do not randomly change parameters (even if someone claims that they have successfully made the parameter change 100s of times).
You could also try a Statspack report, but it might be better to start with something which produces less than 70 pages of output.
Charles Hooper
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc.

Performance tuning of Oracle 10 g

Dear Team ,
I am in need of tuning my Database against the performance .
I have visited lots of Web pages in Net for Performance tuning .
It shows some values for the Performance tuning , But I dont how to read the values
Wheather my database is good or it need to tuned again .
So kindly help me for good performance tuning in my Database (Oracle 10g)
Regards
Augustine

Hi Augustine;
I am in need of tuning my Database against the performance .
I have visited lots of Web pages in Net for Performance tuning .
It shows some values for the Performance tuning , But I dont how to read the values
Wheather my database is good or it need to tuned again .First step should be run ASH AWR report than check your CPU usage(also other parameter) from Oracle Enterprise Manager console.
Check top5 event and try to understand what is happining on ur database. Actualyy There is no specific answer for your question, just check report try to understand to what eat your source? when it happens?what is fruquence etc.. So just run report and observe it
Check below search
http://www.google.com.tr/search?q=Performance+tuning+of+Oracle+10&rls=com.microsoft:en-us&ie=UTF-8&oe=UTF-8&startIndex=&startPage=1&redir_esc=&ei=v0fxS8bTCtOrsAaYqfTbAg
There are many docs related performance.
Hope it helps
Regard
Helios

CF Performance Tuning Help

I moved our internal application from a P3 500mhz CPU 1U
server to a Duo-Core Xeon 1.6ghz server.
The newer box has a larger HD, more RAM, beefier CPU, yet my
application is running at the same or a smidgen faster than the old
server. Oh, I went from a Win2k, IIS 5.0 box to a Windows Server
2003 running IIS 6, mysql 5.0.
I did a Windows Performance Monitor look-see. I added all the
CF services and watched the graphs do their thing. I noticed that
after I ran query on my application, the jrun service Avg. Req Time
is pinned at 100%. Even several minutes after inactivity on the
box, this process is still at 100%. Anyone know if this is a
causing my performance woes? Anyone know what else I can look at to
increase the speed of the app (barring and serious code rebuild)?
Thanks!
chris

Anyone know what else I can look at to increase the speed of
the app
(barring and serious code rebuild)?
There are some tweaks and tips, but I will let more knowledge
folks
speak to these. But I am afraid you problem maybe a code
issue. From
the brief description I would be concerned there is some kind
of memory
leak thing happening in your code and until you track it down
and plug
it up, no amount of memory or performance tuning is going to
do you much
good.

Performance tuning help

hello friends,
i am supposed to use ST05 and SE30 to do performance tuning,and also perform cost estimation,
can some plz help me understand, i am not that good at reading large paragraphs, so plz donot give me links to help.sap
thank you.

Hi
Se30 is the runtime analysis
Here it will give you detailed graph about your program .
abap time,database time application time ..
st05 is sql trace where it will give you individual select stmnts in your program
and also proper index is being used or not.
Other performance tips
check any select stmnts inside the loop and replace with read statement
use binary search in read stmnts
use proper index in where condition in select stmnt.
if you want to execute st05..go st05..trace on-execute ur program--come to st05..trace off and --list trace...
you get summary details of select queires and it will be pink or other color.
Thanks

Performance Tuning for ECC 6.0

Hi All,
I have an ECC 6.0EP 7.0(ABAPJAVA). My system is very slow. I have Oracle 10.2.0.1.
Can you please guide me how to do these steps in the sytem
1) Reorganization should be done at least for the top 10 huge tables
and their indexes
2) Unaccessed data can be taken out by SAP Archiving
3)Apply the relevant corrections for top sap standard objects
4) CBO update statistics must be latest for all SAP and customer objects
I have never done performance tuning and want to do it on this system.
Regards,
Jitender

Hi,
Below are the details of ST06. Please suggest me what should I do. the system performance is very bad.
I require your inputs for performance tuning
CPU
Utilization user    %                   3     Count                                    2
              system %                   3      Load average 1min                0.11
              idle    %                       1                         5 min                0.21
              io wait %                    93                       15 min                0.22
System calls/s                        982 Context switches/s                    1752
Interrupts/s                          4528
Memory
Physical mem avail Kb             6291456 Physical mem free   Kb               93992
Pages in/s                             473 Kb paged in/s                         3784
Pages out/s                            211 Kb paged out/s                        1688
Pool
Configured swap     Kb            26869896 Maximum swap-space Kb            26869896
Free in swap-space Kb            21631032 Actual swap-space   Kb            26869896
Disk with highest response time
Name                                   md3 Response time       ms                  51
Utilization                              2     Queue                                    0
Avg wait time       ms              0    Avg service time    ms                  51
Kb transfered/s                       2   Operations/s                             0
Current parameters in the system
System:        sapretail_RET_01          Profile Parameters for SAP Buffers
Date and Time: 08.01.2009       13:27:54
Buffer Name                    Comment
Profile Parameter             Value      Unit Comment
Program buffer                 PXA
abap/buffersize               450000     kB    Size of program buffer
abap/pxa                      shared           Program buffer mode
|
CUA buffer                     CUA
rsdb/cua/buffersize           3000       kB    Size of CUA buffer
The number of max. buffered CUA objects is always: size / (2 kB)
                                                                                |
Screen buffer                  PRES
zcsa/presentation_buffer_area 4400000    Byte Size of screen buffer
sap/bufdir_entries            2000             Max. number of buffered screens
|
Generic key table buffer       TABL
zcsa/table_buffer_area        30000000   Byte Size of generic key table buffer
zcsa/db_max_buftab            5000             Max. number of buffered objects
|
Single record table buffer     TABLP
rtbb/buffer_length            10000      kB    Size of single record table buffer
rtbb/max_tables               500              Max. number of buffered tables
|
Export/import buffer           EIBUF
rsdb/obj/buffersize           4096       kB    Size of export/import buffer
rsdb/obj/max_objects          2000             Max. number of objects in the buffer
rsdb/obj/large_object_size    8192       Bytes Estimation for the size of the largest object
rsdb/obj/mutex_n              0                Number of mutexes in Export/Import buffer
|
OTR buffer                     OTR
rsdb/otr/buffersize_kb        4096       kB    Size of OTR buffer
rsdb/otr/max_objects          2000             Max. number of objects in the buffer
rsdb/otr/mutex_n              0                Number of mutexes in OTR buffer
|
Exp/Imp SHM buffer             ESM
rsdb/esm/buffersize_kb        4096       kB    Size of exp/imp SHM buffer
rsdb/esm/max_objects          2000             Max. number of objects in the buffer
rsdb/esm/large_object_size    8192       Bytes Estimation for the size of the largest object
rsdb/esm/mutex_n              0                Number of mutexes in Exp/Imp SHM buffer
|
Table definition buffer        TTAB
rsdb/ntab/entrycount          20000            Max. number of table definitions buffered
The size of the TTAB is nearly 100 bytes * rsdb/ntab/entrycount
                                                                                |
Field description buffer       FTAB
rsdb/ntab/ftabsize            30000      kB    Size of field description buffer
rsdb/ntab/entrycount          20000            Max. number / 2 of table descriptions buffered
FTAB needs about 700 bytes per used entry
                                                                                |
Initial record buffer          IRBD
rsdb/ntab/irbdsize            6000       kB    Size of initial record buffer
rsdb/ntab/entrycount          20000            Max. number / 2 of initial records buffered
IRBD needs about 300 bytes per used entry
                                                                                |
Short nametab (NTAB)           SNTAB
rsdb/ntab/sntabsize           3000       kB    Size of short nametab
rsdb/ntab/entrycount          20000            Max. number / 2 of entries buffered
SNTAB needs about 150 bytes per used entry
                                                                                |
Calendar buffer                CALE
zcsa/calendar_area            500000     Byte Size of calendar buffer
zcsa/calendar_ids             200              Max. number of directory entries
|
Roll, extended and heap memory EXTM
ztta/roll_area                3000000    Byte Roll area per workprocess (total)
ztta/roll_first               1          Byte First amount of roll area used in a dialog WP
ztta/short_area               3200000    Byte Short area per workprocess
rdisp/ROLL_SHM                16384      8 kB Part of roll file in shared memory
rdisp/PG_SHM                  8192       8 kB Part of paging file in shared memory
rdisp/PG_LOCAL                150        8 kB Paging buffer per workprocess
em/initial_size_MB            4092       MB    Initial size of extended memory
em/blocksize_KB               4096       kB    Size of one extended memory block
em/address_space_MB           4092       MB    Address space reserved for ext. mem. (NT only)
ztta/roll_extension           2000000000 Byte Max. extended mem. per session (external mode)
abap/heap_area_dia            2000000000 Byte Max. heap memory for dialog workprocesses
abap/heap_area_nondia         2000000000 Byte Max. heap memory for non-dialog workprocesses
abap/heap_area_total          2000000000 Byte Max. usable heap memory
abap/heaplimit                40000000   Byte Workprocess restart limit of heap memory
abap/use_paging               0                Paging for flat tables used (1) or not (0)
|
Statistic parameters
rsdb/staton                   1                Statistic turned on (1) or off (0)
rsdb/stattime                 0                Times for statistic turned on (1) or off (0)
Regards,
Jitender

Performance Tuning Guide Needed.

I've seen numerous references to a "Performance Tuning Guide" Is there
any way this document could be posted on the weblogic customer
downloads.
We desperately need this information. Even with working with Support so
far the process has been trial and error. Try this, then try that. I've
burnt many days just playing around with the properties and so far no
luck.
I've read just about every post in the performance newsgroup. Some seem
to be the same types of problems we are currently facing. Great
response when there are about 50 users. Horrible around 65. Slowness
doesn't seem to be gradual. All of a sudden it starts to crawl. So far
I haven't seen any posts regarding solutions (weblogic.properties
settings) which I could try and use.
We are currently using weblogic 4.0.3 on AIX 4.3 with Oracle 8.i. No
native performance pack for that release. Will upgrading to 4.5.1
increase performance dramatically? Our application is very database
dependent. We use a the weblogic connection pool using Oracle's jdbc
thin driver. Note Oracle's OCI driver has numerous bugs related to CLOB
and BLOB retrieval which are used heavily in our database.
Thanks,
Don DeLuca

Hi Don,
I can't comment on the public posting of the Capacity Planning document.
However, I can say that there is no magic formula for optimizing your
WebLogic application. The biggest things to look at are the application
design and code (e.g., unnecessary synchronization code), DBMS configuration
and database design, JVM heap size (bigger is not always better), number of
execute threads (more is not always better), number of database connections
in the pool, whether or not you are using the performance pack, how much
other activity is happening on the server machine, etc. I can tell you that
trying to simulate a large number of clients from a single JVM client (using
lots of threads) will lead you to believe that the server is having problems
when it is really the client software/hardware that is often the limiting
factor. In many of our large benchmarks, we end up using significantly more
hardware for driving the clients than for running the server(s).
Sorry I don't have any better answers for you,
Robert
Don DeLuca wrote:
I've seen numerous references to a "Performance Tuning Guide" Is there
any way this document could be posted on the weblogic customer
downloads.
We desperately need this information. Even with working with Support so
far the process has been trial and error. Try this, then try that. I've
burnt many days just playing around with the properties and so far no
luck.
I've read just about every post in the performance newsgroup. Some seem
to be the same types of problems we are currently facing. Great
response when there are about 50 users. Horrible around 65. Slowness
doesn't seem to be gradual. All of a sudden it starts to crawl. So far
I haven't seen any posts regarding solutions (weblogic.properties
settings) which I could try and use.
We are currently using weblogic 4.0.3 on AIX 4.3 with Oracle 8.i. No
native performance pack for that release. Will upgrading to 4.5.1
increase performance dramatically? Our application is very database
dependent. We use a the weblogic connection pool using Oracle's jdbc
thin driver. Note Oracle's OCI driver has numerous bugs related to CLOB
and BLOB retrieval which are used heavily in our database.
Thanks,
Don DeLuca

LDAP Performance Tuning In Large Deployments - numconnect parameter

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