How Can we improve the report performance..?

Hi exports,
I am learning the Business Objects XIR2, Please let me know How Can we improve the report performance..?
Please give the answer in detailed way.

First find out why your report is performing slowly. Then fix it.
That sounds silly, but there's really no single-path process for improving report performance. You might find issues with the report. With the network. With the universe. With the database. With the database design. With the query definition. With report variables. With the ETL. Once you figure out where the problem is, then you start fixing it. Fixing one problem may very well reveal another. I spent two years working on a project where we touched every single aspect of reporting (from data collection through ETL and all the way to report delivery) at some point or another.
I feel like your question is a bit broad (meaning too generic) to address as you have phrased it. Even some of the suggestions already given...
Array fetch size - this determines the number of rows fetched at a single pass. You really don't need to modify this unless your network is giving issues. I have seen folks suggest setting this to one (which results in a lot of network requests) or 500 (which results in fewer requests but they're much MUCH larger). Does either improve performance? They might, or they might make it worse. Without understanding how your network traffic is managed it's hard to say.
Shortcut joins? Sure, they can help, as long as they are appropriate. [Many times they are not.|http://www.dagira.com/2010/05/27/everything-about-shortcut-joins/]
And I could go on and on. The bottom line is that performance tuning doesn't typically fall into a "cookie cutter" approach. It would be better to have a specific question.

Similar Messages

How can I Improve the Performance using Global Temo Tables ??

Hi,
Can anyone tell me , How can i make use of Global Temporary Tables to improve the Performance.
I have few sample scripts ,
Say i have the View based on some Complex query like ,
CREATE OR REPLACE VIEW Profile_values_view AS
SELECT d.Profile_option_name, d.Profile_option_id, Profile_option_value,
u.User_name, Level_id, Level_code
FROM Profile_definitions d, Profile_values v, Profile_users u
WHERE d.Profile_option_id = v.Profile_option_id
AND ((Level_code = 'USER' AND Level_id = U.User_id) OR
(Level_code = 'DEPARTMENT' AND Level_id = U.Department_id) OR
(Level_code = 'SITE'))
AND NOT EXISTS (SELECT 1 FROM PROFILE_VALUES P
WHERE P.PROFILE_OPTION_ID = V.PROFILE_OPTION_ID
AND ((Level_code = 'USER' AND
level_id = u.User_id) OR
(Level_code = 'DEPARTMENT' AND
level_id = u.Department_id) OR
(Level_code = 'SITE'))
AND INSTR('USERDEPARTMENTSITE', v.Level_code) >
INSTR('USERDEPARTMENTSITE', p.Level_code));
Now i have created the Global temp Table as ,
CREATE GLOBAL TEMPORARY TABLE Profile_values_temp
Profile_option_name VARCHAR(60) NOT NULL,
Profile_option_id NUMBER(4) NOT NULL,
Profile_option_value VARCHAR2(20) NOT NULL,
Level_code VARCHAR2(10) ,
Level_id NUMBER(4) ,
CONSTRAINT Profile_values_temp_pk
PRIMARY KEY (Profile_option_id)
) ON COMMIT PRESERVE ROWS ORGANIZATION INDEX;
Now I am Inserting the Records into Temp table as
INSERT INTO Profile_values_temp
(Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id)
SELECT Profile_option_name, Profile_option_id, Profile_option_value,
Level_code, Level_id
FROM Profile_values_view;
COMMIT;
Now what my doubt is, when do i need to execute the Insert Statement.
Say , if the View returns few millions of records , then loading such a data into Global Temporary table takes lot of time.
Then what is the use of Global Temporary tables and how can i improve the Performance using the same.
Raj

Thanks for the responce ,
There are 2 to 3 complex views in our database, and there always be more than 5000+ users will be workinf on the application and is OLTP application. Those complex views are killing the application performance.
I what i felt was, if i create the Global Temporary tables for thow views and will be able to load the one third million of records returned by the views in to cache and can improve the application performance.
I have created the Global Temporary tables for 2 views with the option On Commit Preserve , But after am inserting the records into the Temp table and when i Issue the commit statement, the Temp table is getting Cleared.
I really got surpised of this behaviour as i know that with the Option On Commit Preserve , the rows should retain in the Temp Table, Instead , it's getting cleared.
Pelase suggest , what to do ??
Raj

How can I improve below SQL performance.

Hi,
How can I improve below SQL performance. This SQL consumes CPU and occures wait events. It is running every 10 seconds. When I look at the session information from Enterprise Manager I can see that "Histogram for Wait Event: PX Deq Credit: send blkd"
I created some indexes. I heard that the indexes are not used when there is a NULL but when I checked the xecution plan It uses index.
SELECT i.ID
FROM EXPRESS.invoices i
WHERE i.nbr IS NOT NULL
AND i.EXTRACT_BATCH IS NULL
AND i.SUB_TYPE='COD'
Explain Plan from Toad
SELECT STATEMENT CHOOSECost: 77 Bytes: 6,98 Cardinality: 349
     4 PX COORDINATOR
          3 PX SEND QC (RANDOM) SYS.:TQ10000 Cost: 77 Bytes: 6,98 Cardinality: 349
               2 PX BLOCK ITERATOR Cost: 77 Bytes: 6,98 Cardinality: 349
                    1 INDEX FAST FULL SCAN INDEX EXPRESS.INVC_TRANS_INDX Cost: 77 Bytes: 6,98 Cardinality: 349
Execution Plan from Sqlplus
| Id | Operation | Name | Rows | Bytes | Cost | TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | 349 | 6980 | 77 | | | |
| 1 | PX COORDINATOR | | | | | | | |
| 2 | PX SEND QC (RANDOM) | :TQ10000 | 349 | 6980 | 77 | Q1,00 | P->S | QC (RAND) |
| 3 | PX BLOCK ITERATOR | | 349 | 6980 | 77 | Q1,00 | PCWC | |
|* 4 | INDEX FAST FULL SCAN| INVC_TRANS_INDX | 349 | 6980 | 77 | Q1,00 | PCWP | |
Predicate Information (identified by operation id):
4 - filter("I"."NBR" IS NOT NULL AND "I"."EXTRACT_BATCH" IS NULL AND "I"."SUB_TYPE"='COD')
Note
- 'PLAN_TABLE' is old version
- cpu costing is off (consider enabling it)
Statistics
141 recursive calls
0 db block gets
5568 consistent gets
0 physical reads
0 redo size
319 bytes sent via SQL*Net to client
458 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
0 rows processed
Instance Efficiency Percentages (Target 100%)
Buffer Nowait %: 100.00
Redo NoWait %: 100.00
Buffer Hit %: 99.70
In-memory Sort %: 100.00
Library Hit %: 99.81
Soft Parse %: 99.77
Execute to Parse %: 63.56
Latch Hit %: 90.07
Parse CPU to Parse Elapsd %: 0.81
% Non-Parse CPU: 98.88
Top 5 Timed Events
Event     Waits     Time(s)     Avg Wait(ms)     % Total Call Time     Wait Class
latch: library cache     12,626     16,757     1,327     62.6     Concurrency
CPU time          5,712          21.Mar
latch: session allocation     1,848,987     1,99     1     07.Nis     Other
PX Deq Credit: send blkd     1,242,265     981     1     03.Tem     Other
PX qref latch     1,405,819     726     1     02.Tem     Other
The database version is 10.2.0.1 but we haven't installed the patch 10.2.0.5. yet.
I am waiting your comments.
Thanks in advance

Welcome to the forum.
I created some indexes. I heard that the indexes are not used when there is a NULL but when I checked the xecution plan It uses index. What columns are indexed?
And what do:
select i.sub_type
,      count(*)
from   express.invoices i
where i.nbr is not null
and    i.extract_batch is null
group by i.sub_type; and
select i.sub_type
,      count(*)
from   express.invoices i
group by i.sub_type; return?
Also, try use the {noformat}{noformat} tag when posting examples/execution plans etc.
See: HOW TO: Post a SQL statement tuning request - template posting for more tuning instructions.
It'll make a big difference:
SELECT i.ID
FROM EXPRESS.invoices i
WHERE i.nbr IS NOT NULL
AND i.EXTRACT_BATCH IS NULL
AND i.SUB_TYPE='COD'
Explain Plan from Toad
SELECT STATEMENT CHOOSECost: 77 Bytes: 6,98 Cardinality: 349
     4 PX COORDINATOR
          3 PX SEND QC (RANDOM) SYS.:TQ10000 Cost: 77 Bytes: 6,98 Cardinality: 349
               2 PX BLOCK ITERATOR Cost: 77 Bytes: 6,98 Cardinality: 349
                    1 INDEX FAST FULL SCAN INDEX EXPRESS.INVC_TRANS_INDX Cost: 77 Bytes: 6,98 Cardinality: 349
Execution Plan from Sqlplus
| Id | Operation | Name | Rows | Bytes | Cost | TQ |IN-OUT| PQ Distrib |
| 0 | SELECT STATEMENT | | 349 | 6980 | 77 | | | |
| 1 | PX COORDINATOR | | | | | | | |
| 2 | PX SEND QC (RANDOM) | :TQ10000 | 349 | 6980 | 77 | Q1,00 | P->S | QC (RAND) |
| 3 | PX BLOCK ITERATOR | | 349 | 6980 | 77 | Q1,00 | PCWC | |
|* 4 | INDEX FAST FULL SCAN| INVC_TRANS_INDX | 349 | 6980 | 77 | Q1,00 | PCWP | |
Predicate Information (identified by operation id):
4 - filter("I"."NBR" IS NOT NULL AND "I"."EXTRACT_BATCH" IS NULL AND "I"."SUB_TYPE"='COD')
Note
- 'PLAN_TABLE' is old version
- cpu costing is off (consider enabling it)
Statistics
141 recursive calls
0 db block gets
5568 consistent gets
0 physical reads
0 redo size
319 bytes sent via SQL*Net to client
458 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
1 sorts (memory)
0 sorts (disk)
0 rows processed
Instance Efficiency Percentages (Target 100%)
Buffer Nowait %: 100.00
Redo NoWait %: 100.00
Buffer Hit %: 99.70
In-memory Sort %: 100.00
Library Hit %: 99.81
Soft Parse %: 99.77
Execute to Parse %: 63.56
Latch Hit %: 90.07
Parse CPU to Parse Elapsd %: 0.81
% Non-Parse CPU: 98.88
Top 5 Timed Events
Event     Waits     Time(s)     Avg Wait(ms)     % Total Call Time     Wait Class
latch: library cache     12,626     16,757     1,327     62.6     Concurrency
CPU time          5,712          21.Mar
latch: session allocation     1,848,987     1,99     1     07.Nis     Other
PX Deq Credit: send blkd     1,242,265     981     1     03.Tem     Other
PX qref latch     1,405,819     726     1     02.Tem     Other

How can i improve the speed of my mac?

my mac has 667 MHz, how can i improve the speed?

Sorry if that sounded not very helpful, but basically it comes down to that. Not much can improve the performance of machine of that vintage, to stand up to a current model, unless you spend almost as much on upgrades (some of which to consider are listed below).
Some thought should be given to the budget (money and time and effort) one is willing to spend. The G4 Digital Audio is possibly a good candidate for upgrading for someone who is interested in do-it-yourself computer stuff and bargain hunting for parts. It can even be a fun hobby. But even max-ing out all possible upgrades will still be lacking in performance compared to the current Mac models, I don't actually have any specific benchmarks, just my gut feel. And you may spend a good portion of the cost of a new machine on all those parts for the old machine.
Is this the 667MHz machine (G4 Digital Audio) in question?
http://www.lowendmac.com/ppc/digital-audio-power-mac-g4.html
http://eshop.macsales.com/Descriptions/specs/Framework.cfm?page=g4da.html&title= Power%20Macintosh%20G4%20Digital%20Audio
or is it some other model?
Here are some CPU upgrades, for example:
http://eshop.macsales.com/MyOWC/Upgrades.cfm?sort=pop&model=162&type=Processor&T I=2420&shoupgrds=Show+Upgrades
you can even get a small rebate for your original CPU
http://eshop.macsales.com/Service/rebate-program/
Any of those CPUs should double your processing speed, but you may also need more RAM...or the CPU will just be waiting for data to be read from the virtual memory on the hard drive.
http://eshop.macsales.com/item/Other%20World%20Computing/133SD512328/
you could max it out with a whopping 1.5 GB, with 3 of these.
and you may need a better video card...
http://eshop.macsales.com/MyOWC/Upgrades.cfm?sort=pop&model=162&type=Video&TI=29 34&shoupgrds=Show+Upgrades
To add larger and faster hard drives than the original Ultra ATA/66 can handle you would need a PCI ATA133 or PCI SATA card...
http://eshop.macsales.com/item/ACARD/AEC6280MOB/
http://eshop.macsales.com/item/Sonnet%20Technology/TSATA/
And if you need to install OS X from a DVD, and want to burn your own DVD, you may need a new optical drive, if one hasn't been installed already, to replace the CD-RW:
http://eshop.macsales.com/MyOWC/Upgrades.cfm?Model=162&Type=InternalOpticalDrives&sort=pop
Also, check out the Power Macintosh G4 forums if you have any questions about that particular model, (if I guessed correctly)
http://discussions.apple.com/category.jspa?categoryID=113
Even while I am trying to build a case to convince someone not to waste their money on this project, I am thinking to myself, where can I pick up one of these G4 towers to take on this project myself. Maybe a Quicksilver, no a FW400 MDD dual-boot for sure, I still have some OS 9 software. I did about all I can with my G3 Desktop, and spent more than my MacBook cost.

How can I improve my imac performance?

Hi guys,
When I'm using a complex files on Adobe illustrator CS4, it crashes...
How can I improve my imac performance?
Here's my system's specs:
Model Name:    iMac
Model Identifier:    iMac11,1
Processor Name:    Intel Core i5
Processor Speed:    2.66 GHz
Number Of Processors:    1
Total Number Of Cores:    4
L2 Cache (per core):    256 KB
L3 Cache:    8 MB
Memory:    4 GB
Processor Interconnect Speed:    4.8 GT/s
Boot ROM Version:    IM111.0034.B02
SMC Version (system):    1.54f36
Thanks for youyr help!

I figured you'd ask for those Since I can't remember the topic/subject line, I have no idea if I have enough time in this life to try to find them - I had subscriptions for all of them, but of course, those went poof into cyberspace.
Edit: Athough the search function does not work well (could not specificy 'iMac' - would get "unauthorized to search" every time), so I had to go through quite a few, but I found two of the major threads:
https://discussions.apple.com/message/12417693#12417693
https://discussions.apple.com/message/12807961#12807961
Enjoy reading....
Barbara

How can I run the report for different input values at the same time?

Reports version: Report Builder 6.0.8.13.1
Oracle version: Oracle8i Enterprise Edition Release 8.1.7.0.0
I want to run the same report for different input parameter values and spool each o/p to different file and ftp to a server. For this, as a first step, I am spooling different input values in to a file, reading those values through a loop and calling the report for that input values. Each report run/execution is taking 15 minutes. Total report execution is taking approximately 4 hours (assuming 16 different input values) to complete. So I have to wait 4 hours to see ALL outputs.
I would like to run the report parallel for ALL the input values and I should be able to see the ALL outputs with in 15 or 16 minutes.
In my shell script, I added & symbol at the end of the report call to start/run the job in the background. Due to this the control passed to the next step after the report call. At this place I have an ftp command to send the output file to a different server and it is giving error some thing like o/p file is not available/created yet". This is due to the fact that report writer is NOT yet completely started/initiated or it is NOT completed the spooling.
How can I run the report at the same time for all the input values and save the time?
Thanks in advance.
Kishore.

Increase the number of server engines running right now it seems there is only one engine running ,increase it to 4 or 6
and then atleast 4 or 6 reports will run simultaneously.
For FTPing the output add to your sript to check whether it is locked and if not then only try to ftp .
Also for more better functionality read the document (chapter 15 ) for 10g reports for its new fuinctionality.
http://download.oracle.com/docs/cd/B14099_17/bi.1012/b14048/toc.htm
Thanks
Subodh

How can I improve the stability of itunes64bit 8.0.2 on my Vista system?

Vista Home Premium: iTunes64bit: application crashes after adding album photos and then changing views (list, Album, split) or clicking on different playlists and back to the entire music library.
The library has 42,000 items (mostly music) so it is quite large. At launch it takes a long time for itunes to load and display. There is no user cues telling me it is running. It simply displays after 60 or more seconds.
Then I start working in the library, pasting pictures to multiple items, modifying album titles.
After doing a few management tasks on my music items and navigating back and forth between the music library and playlist (changing views), the application stop being responsive and according to the log, the app just plainly crashes.
Sometimes I can restart successfully but most of the times, I need to stop the itunes service or log-out before I can restart it successfully.
I am using itunes64bit 8.0.2
I am running it on a machine equipped with 4GB of ram and the library lives on a 500GB external hard drive plugged-in through USB 2.0.
How can I improve the stability of itunes64bit on my system?
Message was edited by: JF Boisvert

This VI can be convert to labview 8.0 because subvi are not compatible with old version.
I post a screenshot.
Aurélien J.
National Instruments France
#adMrkt{text-align: center;font-size:11px; font-weight: bold;} #adMrkt a {text-decoration: none;} #adMrkt a:hover{font-size: 9px;} #adMrkt a span{display: none;} #adMrkt a:hover span{display: block;}
>> Du 30 juin au 25 août, embarquez pour 2 mois de vidéo-t'chat ! Prenez place pour un voyage au coe...
Attachments:
image.jpg ‏38 KB

How can we put the report which is generated by the program into spool??

How can we put the report which is generated by the program into spool??
I had generated a file in Unix which had the report but now the requirement has changed.
Regards,
Shashank.

Hi Shashank,
If the program is executed in the background and it has the write statement then the spool will automatically generated.
Reward points if useful.
Regards,
Atish

How can I put the report generated by a program into a File?

Hi all,
 How can I put the report generated by a program into a File?It can be in TXT format or excel format which ever is possible.
I need to export this file to memory,How can I do that??
Regards,
Shashank.

Hello Shashank,
Please ignore my previous answer... Ofcourse it works...
There are several ways to do this...
two of them are
1. List -> Save -> File and press enter..
 it will ask for the format, then path where to save it. Just give the path.
2. Using function module 'GUI_DOWNLOAD'.
I'm giving the example bellow which explains the usage of both GUI_UPLOAD and GUI_DOWNLOAD.
To do this... you need to have folder with name 'TEST' and a .txt file in it with name 'test'. And contents of it are :
TEST1 ,BOT
TEST2 ,BOT
TEST3 ,BUT
with spaces.
REPORT zssr_bdc .
DATA: BEGIN OF g_t_itab OCCURS 0,
 matnr LIKE mara-matnr,
 maktx LIKE makt-maktx,
 END OF g_t_itab.
DATA: g_t_bdcdata TYPE TABLE OF bdcdata.
DATA: path TYPE string,
 path1 type string.
path = 'C:\Documents and Settings\ssr3kor\Desktop\TEST\test.txt'.
path1 = 'C:\Documents and Settings\ssr3kor\Desktop\TEST\test1.txt'.
*contents of test.txt *
*TEST1 ,BOT *
*TEST2 ,BOT *
*TEST3 ,BUT *
CALL FUNCTION 'GUI_UPLOAD'
EXPORTING
 filename = path
TABLES
 data_tab = g_t_itab.
LOOP AT g_t_itab.
WRITE:/1(18) g_t_itab-matnr, 20(40) g_t_itab-maktx.
ENDLOOP.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
 filename = path1
 filetype = 'ASC'
TABLES
 data_tab = g_t_itab.
Now you will get one .txt file with name 'TEST1.TXT' in the TEST folder.
REWARD POINTS IF IT IS HELPFUL
Regards
Sasidhar Reddy Matli

How can I flip my iphone videos on my PC? My videos from my iphone are horrible when I transfer them to my PC. How can I improve the video on my PC? Can I just convert the files to WMV? When the video plays the speed is off, it's half slow-motion

My videos from my iphone are horrible when I transfer them to my PC. How can I improve the video on my PC? Can I just convert the files to WMV? When the video plays the speed is off, it's half slow-motion and staggers into normal play. The clips are slightly cut as well, the clips do not roll continuously. I'm taling about videos that are no more than 2 minutes long. I'm frustrated and I could really use some advice-my kids basketball games is what I'm recording and I'm trying to send them to my family (they are not very tech savvy). Thanks

Not it's only function but one for which it was most admirably suited, which is why I really hope someone can find a work around. I am hoping my post to the Apple feedback may prompt a useful response from Apple and I live in hope that my post here will elicit a useful response from another user. I did not miss the the text at the top of the feedback form but you presumably missed my initial text, 'someone here can explain' or my subsequent 'work around from another user'
Just in case anyone reading this has a large collection of music videos, video podcasts or iTunes U then DO NOT upgrade your iPad to iOS 5. If you are considering purchasing the iPad as a useful mobile device to experience these media organised in your iTunes please don't as you will be wasting your money. (unless someone on this forum knows of a way to undo the mess created by those infallible folks at Apple)
Yes I know it does other things but the purpose I bought it for doesn't work anymore

How can we generate the reports in html or text file formats?

Hi,
Is there any package that can help in creating HTMLDB reports in .txt files or .html files? (Similar to TEXT_IO in Oracle Forms)
How can we generate the reports in html or text file formats from HTMLDB?
Thanks in Advance
Renjith

Hello all.
Bi Publisher is great, but has a very high price tag. It's even more expensive than Forms & Reports Services. We are considering APEX to replace Forms & Reports on the web, but the reporting limitations are still a problem.
I wonder if there is another option.
Thanks

How can we generate the report of backup,tablesapcefrom OEM / RMAN

How can we generate the report of backup status,tablesapce(usedf,free space) for all the databases from OEM / RMAN
1.)we need generate the report of tablespace used,free, archive...
2.)How can we generate the Backup status report also

user13584223 wrote:
How can we generate the report of backup status,tablesapce(usedf,free space) for all the databases from OEM / RMAN
1.)we need generate the report of tablespace used,free, archive...There are DBA_* views that expose the necessary information. They are documented in the Reference Manual.
2.)How can we generate the Backup status report alsoThere are rman commands that give that. They are documented in the Backup and Recovery User's Guide.
=================================================
Learning how to look things up in the documentation is time well spent investing in your career. To that end, you should drop everything else you are doing and do the following:
Go to [url tahiti.oracle.com]tahiti.oracle.com.
Locate the link for your Oracle product and version, and click on it.
You are now at the entire documentation set for your selected Oracle product and version.
BOOKMARK THAT LOCATION
Spend a few minutes just getting familiar with what is available here. Take special note of the "books" and "search" tabs. Under the "books" tab (for 10.x) or the "Master Book List" link (for 11.x) you will find the complete documentation library.
Spend a few minutes just getting familiar with what kind of documentation is available there by simply browsing the titles under the "Books" tab.
Open the Reference Manual and spend a few minutes looking through the table of contents to get familiar with what kind of information is available there.
Do the same with the SQL Reference Manual.
Do the same with the Utilities manual.
You don't have to read the above in depth. They are reference manuals. Just get familiar with what is there to be referenced. Ninety percent of the questions asked on this forum can be answered in less than 5 minutes by simply searching one of the above manuals.
Then set yourself a plan to dig deeper.
- Read a chapter a day from the Concepts Manual.
- Take a look in your alert log. One of the first things listed at startup is the initialization parms with non-default values. Read up on each one of them (listed in your alert log) in the Reference Manual.
- Take a look at your listener.ora, tnsnames.ora, and sqlnet.ora files. Go to the Network Administrators manual and read up on everything you see in those files.
- When you have finished reading the Concepts Manual, do it again.
Give a man a fish and he eats for a day. Teach a man to fish and he eats for a lifetime.
=================================

How can I improve the sound in final cut express using my mic?

How can I improve the sound in final cut express using my mic?

I think you're in the wrong forum. This is the LiveType forum. There is no sound in LT.

How can I improve the rate of success in Siri recognizing what I am sayin (rate of success nil, to date).

How can I improve the rate of success in Siri recognizing what I am saying (rate of success nil, to date)?

justjesper wrote:
Excelent question.
I have been searching around, and it looks like a lot of users is asking this question.
Where can I make Siri learn my accent ? Some users was talking about a feature where you could correct Siri so it would learn, but I have not been able to find it.
Nor have I, but it does seem to get better as I go along, so maybe it learns.

How can I improve the performace of this?

I have two tables - TableA and TableB. TableB is having 500,000,000 rows. I need to insert these rows, after some processing on them, into tableA. My insert statement is like this -
Insert into tableA
select A,B,C,...
from TableB
How can I improve the performace of this?
Here it will select 500,000,000 rows from TableB and store the result in cache and then start inserting.
Do I have any way so that the select statement starts releasing the records (and not wait upto 500,000,000 record ) and in parallel insert statement start inserting the records?

Shirish,
You need to insert more than 500 millions of rows in a table, right ?
But one point can be a problem, this is when you said "I need to insert these rows, after some processing on them". What does that means after some processing ?
Please give us more information about all your process, maybe the problem doesn't come from the insert itself ?
And why the APPEND hint cannot be an answer ?
And why create table cannot be an answer ?
What time did you expected for insert of these 500 millions of rows ?
Nicolas.

How Can we improve the report performance..?

Similar Messages

Maybe you are looking for