Reorgs

I am considering it because we've been having some strange performance issues. I have read mixed opinions of the topic. Any feedback is much appreciated.

zinger77 wrote:
I am considering it because we've been having some strange performance issues. I have read mixed opinions of the topic. Any feedback is much appreciated.Can you give us some examples of what you mean by "strange performance issues" ?
Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk
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Similar Messages

Running itunes 10.6.1.7. did reorg of lib to new struct. reorg left all video podcasts in old folder. I cannot view video podcasts itunes or download. help please.

I just installed itunes 10.6.1.7. on a new PC connected an external hard drive containing my itunes library and pointed to my library on an external hard drive.
I also did reorganization of my library structure via "organize library" menu option. The reorg left all video podcasts in the old podcast folder and will not let me copy them to the new podcast folder.
From the itunes store I cannot select a new video podcast and download and view it in itunes. The podcast will show up but the file or episode has a "GET" button next to it and never shows it as available to view in itunes. I have attempted to download many time with no success.
I have podcasts that are all video podcasts and some that are mixed audio podcasts and video podcasts. in both cases the video podcasts remained in the original folder location.
The video podcasts are not in movies or in tv shows. All music is present and accounted for that I know.
How can I restore all video podcasts previously downloaded and view them on itunes or an ipod?
Can I create a video podcast option in itunes?
Please help.

Issue solved - It turns out that the QuickTime version on my PC was 6.5 and I needed to update to version 7.6 or higher to allow videos to play in iTunes. I updated to QuickTime version 7.7 and then added the old podcast folder to iTunes while in podcasts. This found all video podcast content and then the auto reorg moved all folders to the new podcast directory. For the videos I manually moved earlier, I had to move (not copy) them back to the old directory or folder then add that old folder and they were now in the right directory and viewable in iTunes.

Table Reorg in R/3 System - eligibility of the table for reorg

Hi Experts,
We want to perform Table reorg in our R/3 system 4.7 EXT2. We have taken out top 10 tables which are candidates for table reorg based on Size, could you please let me know the below :
How i can check that each table is eligible for table reorg or not?
Which are the tables that can be excluded from table reorg ?.
Please let me know is therte any procedure for the same.

Hi Bablu,
Refer to the link below
http://janpreetdba.blogspot.in/2013/08/reorg-table-and-index-storage-quality.html
This will help you filter our tables and indexs having poor storage quality and can be a candidate for reorg.
Hope this helps.
Regards,
Deepak Kori

Trying to use brspace to do a reorg

I am trying to reorg ALL the tables in one tablespace at once:
brspace -f tbreorg -a reorg -i psapfact2i -m offline -n psapfact2d -s psapfactd -t "*"
I get this back:
BR1001I BRSPACE 7.00 (33)
BR1002I Start of BRSPACE processing: sdxtkjdu.tbr 2008-04-22 11.57.42
BR0484I BRSPACE log file: /oracle/BQA/sapreorg/sdxtkjdu.tbr
BR0280I BRSPACE time stamp: 2008-04-22 11.57.45
BR1009I Name of database instance: BQA
BR1010I BRSPACE action ID: sdxtkjdu
BR1011I BRSPACE function ID: tbr
BR1012I BRSPACE function: tbreorg
BR0280I BRSPACE time stamp: 2008-04-22 11.57.47
BR1039I Selecting information about tables and indexes...
BR0285I This function can take several seconds/minutes - be patient...
BR0280I BRSPACE time stamp: 2008-04-22 11.57.49
BR0814I Number of tables/partitions in schema of owner SAPR3: 15948/1024
BR0280I BRSPACE time stamp: 2008-04-22 11.57.56
BR0815I Number of indexes/partitions in schema of owner SAPR3: 21106/6021
BR0280I BRSPACE time stamp: 2008-04-22 11.57.56
BR0660I List display 352 - no selection possible
List of tables for reorganization
Pos. Owner    Table                Pt. DgPk.     Rows Space[KB] Data[KB:%]
    1 - SAPR3    /BI0/E0BWTC_C02      NO   1           0        72         0:0
    2 - SAPR3    /BI0/E0BWTC_C03      NO   1           0        72         0:0
    3 - SAPR3    /BI0/E0BWTC_C04      NO   1           0        72         0:0
    4 - SAPR3    /BI0/E0BWTC_C05      NO   1           0        72         0:0
    5 - SAPR3    /BI0/E0BWTC_C06      NO   1           0        72         0:0
    6 - SAPR3    /BI0/E0BWTC_C07      NO   1           0        72         0:0
    7 - SAPR3    /BI0/E0BWTC_C09      NO   1           0        72         0:0
    8 - SAPR3    /BI0/E0BWTC_C11      NO   1           0        72         0:0
    9 - SAPR3    /BI0/E0PCA_C01       YES 1           0       584         0:0
   10 - SAPR3    /BI0/E0PCA_C02       NO   1           0        72         0:0
   11 - SAPR3    /BI0/F0BWTC_C02      YES 1        5405      1040       713:69
   12 - SAPR3    /BI0/F0BWTC_C03      YES 1           0        72         0:0
   13 - SAPR3    /BI0/F0BWTC_C04      YES 1           0        72         0:0
   14 - SAPR3    /BI0/F0BWTC_C05      YES 1         128       144         6:4
   15 - SAPR3    /BI0/F0BWTC_C06      YES 1           0        72         0:0
   16 - SAPR3    /BI0/F0BWTC_C07      YES 1           0        72         0:0
   17 - SAPR3    /BI0/F0BWTC_C09      YES 1           0        72         0:0
   18 - SAPR3    /BI0/F0BWTC_C11      YES 1           0        72         0:0
   19 - SAPR3    /BI0/F0PCA_C01       YES 1     9985560    715472    565588:79
   20 - SAPR3    /BI0/F0PCA_C02       YES 1     3964200    144840    100654:69
Press <Rtn> - scroll, 'c' - cont, 'h' - header, 's' - stop ...
   21 - SAPR3    /BIC/E100000         NO   1      289140     18440     13836:75
   22 - SAPR3    /BIC/E100001         NO   1      147720      9224      7069:77
   23 - SAPR3    /BIC/E100002         NO   1      587930     50184     40191:80
   24 - SAPR3    /BIC/EMMPUR_C01      NO   1           0        72         0:0
   25 - SAPR3    /BIC/EZCO_C50        NO   1           0        72         0:0
   26 - SAPR3    /BIC/EZCO_C51        NO   1           0        72         0:0
   27 - SAPR3    /BIC/EZECCS_C04      NO   1           0        72         0:0
   28 - SAPR3    /BIC/EZMMPURC01      NO   1           0        72         0:0
   29 - SAPR3    /BIC/EZPCA_C03       YES 1           0       488         0:0
   30 - SAPR3    /BIC/EZPURC001       YES 1           0      2664         0:0
   31 - SAPR3    /BIC/EZPURC002       YES 1           0       296         0:0
   32 - SAPR3    /BIC/EZQM_C50        YES 1           0     16488         0:0
   33 - SAPR3    /BIC/EZRC_C50        NO   1           0        72         0:0
   34 - SAPR3    /BIC/EZRC_C51        YES 1           0       488         0:0
   35 - SAPR3    /BIC/F100000         YES 1           0        72         0:0
   36 - SAPR3    /BIC/F100001         YES 1           0        72         0:0
   37 - SAPR3    /BIC/F100002         YES 1           0        72         0:0
   38 - SAPR3    /BIC/FMMPUR_C01      YES 1      590150     53328     42648:80
   39 - SAPR3    /BIC/FZCO_C50        YES 1      478120     55552     41555:75
   40 - SAPR3    /BIC/FZCO_C51        YES 1       32610      4176      2898:69
Press <Rtn> - scroll, 'c' - cont, 'h' - header, 's' - stop ...
   41 - SAPR3    /BIC/FZECCS_C04      YES 1      744980     34696     25463:73
   42 - SAPR3    /BIC/FZMMPURC01      YES 1        9719       976       655:67
   43 - SAPR3    /BIC/FZPCA_C03       YES 1    11251680    741872    593350:80
   44 - SAPR3    /BIC/FZPURC001       YES 1           0        72         0:0
   45 - SAPR3    /BIC/FZPURC002       YES 1           0         8         0:0
   46 - SAPR3    /BIC/FZQM_C50        YES 1           0        72         0:0
   47 - SAPR3    /BIC/FZRC_C50        YES 1       62090      4576      1819:40
   48 - SAPR3    /BIC/FZRC_C51        YES 1           0         8         0:0
   49 - SAPR3    RSDMFACTAB           NO   1           0        72         0:0
   50 - SAPR3    RSMDMCNVTAB          NO   1           0        72         0:0
Standard keys: c - cont, b - back, s - stop, r - refr, h - help
BR0662I Enter your choice:
c
BR0280I BRSPACE time stamp: 2008-04-22 11.58.02
BR0663I Your choice: 'c'
BR0259I Program execution will be continued...
BR0280I BRSPACE time stamp: 2008-04-22 11.58.02
BR0657I Input menu 353 - please enter/check input values
Options for reorganization of tables: SAPR3./BI0/E0BWTC_C02,... (50 tables)
1 ~ New destination tablespace (newts) ........ [PSAPFACT2D]
2 ~ Separate index tablespace (indts) ......... [PSAPFACT2I]
3 - Parallel threads (parallel) ............... [1]
4 ~ Table/index parallel degree (degree) ...... []
5 # Create DDL statements (ddl) ............... [yes]
6 ~ Category of initial extent size (initial) . []
7 # Sort by fields of index (sortind) ......... []
8 - Table reorganization mode (mode) .......... [offline]
Standard keys: c - cont, b - back, s - stop, r - refr, h - help
BR0662I Enter your choice:
Why is it only doing 50 of the 353 tables?

From DB02 then saved to an excel file:
Owner     Object     Type     Tablespace     KBytes     Blocks     Extents     MaxExtents     Next (K)
1 SAPR3     /BIC/EZQM_C50200509     TABLE PART     PSAPFACTD     64     8     1     -1     0
2 SAPR3     /BIC/EZQM_C50200508     TABLE PART     PSAPFACTD     64     8     1     -1     0
3 SAPR3     /BIC/EZQM_C50200507     TABLE PART     PSAPFACTD     64     8     1     -1     0
4 SAPR3     /BIC/EZQM_C50200506     TABLE PART     PSAPFACTD     64     8     1     -1     0
595 SAPR3     /BIC/EZRC_C5192003003     TABLE PART     PSAPFACTD     64     8     1     -1     0
596 SAPR3     /BIC/EZRC_C5192003002     TABLE PART     PSAPFACTD     64     8     1     -1     0
597 SAPR3     /BIC/EZRC_C5192003001     TABLE PART     PSAPFACTD     64     8     1     -1     0

Reorg tables in 8.1.7

I'm planning to reorg 500+ tables in 5-6 schemas from prod. instance to new one. DB is 8.1.7.4
I'm thinking on using 2 approaches:
1) using db cloning from current prod. to new then re-org selected tables to different tablespaces, or
2) export tables using table mode than import to new prod. by chaning default_tablespace for target user.
Which is better option if objective is to re-org tables to different tablespaces within schemas. Also want to use new lay-out mgmt, i.e. change dictionary to locally managed, tune the new instance, etc.
Thanks in advance.
BAM

Or just create a database link from your new box to the production box. You can then run CREATE TABLE new_name AS SELECT * FROM old_name@the_db_link; Though INDEXES will not be created...

Loss of space after reorg of compressed index

Hi Oracle experts,
In 2008 we compressed indexes of ECC system as per sap note 1109743 and
obtained high compression ratio.
Now we have upgraded to oracle 11.2.0.2 and BRTOOLS 7.20 (10).
While using brtools to do table reorg/compression as per note 1431296
indexes loose compression factor.
                                                              before                     after        compression
GLFUNCA           PSAPGLFUNCA       41,574,400             11,468,800 enabled
GLFUNCA~0       PSAPSTABI             699,712                    5,555,648 enabled
GLFUNCA~1       PSAPSTABI             263,872                     2,112,384 enabled
GLFUNCA~2       PSAPSTABI             446,528                     3,531,072 enabled
GLFUNCA~3       PSAPSTABI          1,051,904                      5,047,872 enabled
I have tried uncompressing and compressing indexes again but cannot compress to
same factor, results are same using brtools or oracle command.
I have tested on coy of system where table GLFUNCA is uncompressed and indexes compressed.
reorg of indexes result in same bad compression factor.
key used for compression is same.
any advise, how to regain index compression factor or anyone having similar experirence.

Hello Daljit,
First time I heard about this kind of behavior. I already faced index with the same size after compress, but it happened because the number of colunm was wrong defined.
My suggestion:
1.Uncompress one index (rebuild without compress);
2.Identify number of column that should be compress;
3.Rebuild with compress nologging;
4.Active logging
Be aware all related below notes..
1289494 - FAQ Oracle compression
1109743 - Use of Index Key Compression for Oracle Databases
Regards,
Jairo Pedroza

How to find out what tables need to be reorged?

Hi Gurus,
I am new to oracle and I would like to know about table reorganization?
1. How do we come to know, what tables are the right candidates for a reorg?
2. Are there any queries to find out this?
3. Can someone send me links or documents for the same?
Appreciate if someone can answer the above question?
Thanks in advance
Mazumdar

user13366035 wrote:
Hi Gurus,
I am new to oracle and I would like to know about table reorganization?
1. How do we come to know, what tables are the right candidates for a reorg?
2. Are there any queries to find out this?
3. Can someone send me links or documents for the same?
Appreciate if someone can answer the above question?
Thanks in advance
MazumdarHi Mazumdar and welcome to the forum!
As it's not a correct forum to post the question, please go to the Database-General section and post your question there
General Database Discussions

What are the step involved in online table reorg in oracle 10g?

Hi All,
Could you please provide the step by step how to perform the online table reorg ?
Thaks
Bala

Etbin wrote:
You mean http://docs.oracle.com/cd/B19306_01/appdev.102/b14258/d_redefi.htm#ARPLS042 ?
Regards
EtbinNo, not table redefinition, I think he means a tablespace reorg as you can do through Enterprise Manager.

Uneven distribution of memory in the blades even after reorg

Hello:
We have 3 blades in our BI-A system, and we see that one of the blades is always consuming almost twice the memory of the other 2 blades. We have tried reorg without any success.
Any suggestions on how to fix this issue?
Thanks,
Bindu

Hello Vitaliy:
Thanks for your reply. We do have a stand-alone TREX admin tool on blades, but we couldnt find the interactive graph you have mentioned, to move them with our mouse. Is it possible for you to give us the path in the TREX Admin to find the graphs?
But we did find in Index > Landscape, we could right click and move the master indexes between the blades.
This seems to help, but again we think that the Total memory used in the Hosts > Memory tab is not showing the correct number. It is still showing that one blade is almost double the other 2 blades.
We check the Reorg>usage by service(1), and see that all the blades show equal usage. Does this mean the Hosts > Memory tab is not showing the correct values?
Thanks,
Bindu

How to start for reorg datas ?

Hi members,
I have a few questions about an 9i Oracle database for using with IBM WebSphere Commerce.
DB is not very big ... only 1,3 Gb.
Production release : 9.2.0.7
Every night at 2:00am I have a task for analyzing statistics on all tables (3 schemas) but
I don't have tasks for reorganize datas.
How can I verify that reorg datas is very needed ?
Is there SQL Statement to identify it and which columns or values are important ?
When we talk about reorg ... does it concern tables only or does it concern tables and indexes ?
Do you have resources for reorg datas with no risk ? (tutorial, technical note)
Sorry for my questions but I was in a Oracle DBAI et DBAII Training and I never saw how to reorg datas.

Hi,
Firstly, I feel that analysing all data every day is probably an overkill. Well, if your data is updated drastically every day then its required.
I am not familier with Websphere, Is there a special activity called as data re-organisation? or you are talking about normal re-organisation of data?
If we are talking about just reorganising data, to get rid of fragmentation, alter table .... move will do the job. This will invalidate the indexes, but there are clauses which will rebuild the indexes.
Again, this is a big excercise and should be done only when there is a substential reason to do so.
Regards

Unable to include VARI table in "Tables Excluded from REORG" No Edit options

I am trying to remove the table VARI from the automatic reorg in the dbacockpit.
Steps followed :
-> Configuration
-> Automatic Maintenance
-> Automatic REORG
-> Tables Excluded from REORG
Issue : Unable to include VARI table in "Tables Excluded from REORG" No Edit options .

Hello Arun,
Automatic reorg of the tables/indexes is done on the basis of result provided by script REORGCHK which runs on regular basis to analyse the table with huge growth and more fragmented blocks.
Since the default filter for reorg is set to size' 1,000,000 KB', table which has bigger size than the default value, needs to be reorganized as per the standard configuration.
To exclude table VARI, modify the filter clause, and update the policy using procedure Automaint_set_policyfile(). You then can verify again using automaint_get_policyfile(). The procedures are documented in the IBM DB2 InfoCentre. If you need assistance, please let me know.
I suggest to take the exported policy, and just add table VARI in the filter clause. The section could read as follows.
========================================================================
<FilterClause>TABSCHEMA NOT LIKE 'SYS%' AND (TABSCHEMA, TABNAME) NOT IN
(SELECT TABSCHEMA, TABNAME FROM SYSCAT.EVENTTABLES) AND (TABNAME <>
'VARI')</FilterClause>
========================================================================
Then apply this policy, and check results.
Please provide feedback.
Best Regards,
Gunjan

How to reorg my tables that being updated very frequently during batch jobs

Hello All,
See I have 4 tables of them 250+ Gb and rest 2 50+(<100) Gb in size.
Now client is asking to reorg them. No I have two questions
1. When I should go for reorg.?
2. and how?
Thanks in advance.
Regards,
Alok

user577981 wrote:
Hello All,
See I have 4 tables of them 250+ Gb and rest 2 50+(<100) Gb in size.
Now client is asking to reorg them. No I have two questions
1. When I should go for reorg.?
2. and how?
Thanks in advance.
Regards,
AlokAnd I'd ask the client "Why?" What problem is exhibiting itself that would indicate a table reorg is the proper response?
You'd be surprised how many "clients" - includeing commercial software developers, don't understand db internals and look for silver bullet solutions to problems, or even "anticipated" problems.
That's not not say that there <i>isn't</i> a legit reason for doing a table reorg, but there are far fewer occurances of legit reasons than there are people demanding table reorgs simply because they don't know what else to do.

Q: looking for a best practices on a reorg issue

I am trying to figure out how to reorg our BW PSAPODSD and PSAPODSI tablespaces. They both have partitions which seems to complicate the issue a tad. What I am trying to do is move the data to new tablespaces (PSAPTESTD and PSAPTESTI, drop the old ODS tablespaces and datafiles, recreate them as LTMS, then move from TEST back to ODS.
I've looked at using the oracle exp/import tools. I've looked into brtools/brspace tools. I am not sure which way to go that (a) will get all the data, (b) get/recreate all the bazillion partitions, and (c) recreate/rebuild all the indexes and the partitoned indexes.
I've already done an exp then an imp (to create the SQL) but do I need to do more than just go into the SQL and change the target tablespaces?
Does anyone have any method/scripts they can share?
Thanks in advance
Vince

Thanks for the pointer but it seems to be asking the same questions I am. The only PDF that I could get was the one from quest. Yours from LuLu I kept getting DB errors on the LuLu site.
Also, 3rd party options are currently out of the question. I have done reorgs on R3 systems but since they don't have partitions and sub partitions and such there didn't seem to be as much to worry about.
I don't even want to mess with any BW R3 internal tables and that is why I would like to go from ODSD->Temp->ODSD. I can get the downtime to do it too.
Thanks for your help though the issue still sin't solved. And I'd like to see your book sometime.
Vince

SQL Server 2012 Reorg Index Job Blew up the Log File

We have a maintenance plan that nightly (1) runs dbcc checkdb on all databases, (2) reorgs indexes on all databases, compacting large objects, (3) updates statistics, etc. There are three user databases, one large, one medium, one small. Usually it uses
a little more than 80% of the medium database's log, set to 6,700 MB. Last night the reorg index step caused the log to increase to almost 14,000 MB and then blew up because the maximum file size was set to 14,000 MB, one of the alter index commands failed
because it ran out of log space. (Dbcc checkdb step ran successfully.) Anyone have any idea what might cause this? There is one update process on this database, it runs at 3 AM. The maintenance plan runs at 9 PM and completes by 1 AM. The medium database has
a 21,000 MB data file, reserved space is at about 10 GB. This is a SQL 2012 Standard SP 2 running on Windows 2012 Server Standard.

I personally like to shrink the log files once the indexes have been rebuilt and before switching back to full recovery, because as I'm going to take a full backup afterwards, having a small log file reduces the size of the backup.
Do you grow them afterwards, or do you let the application waste time on that during peak hours?
I have not checked, but I see no reason why the backup size would depend on the size of the log file - it's the data in the data file you back up, not the log file.
I would say this is highly dubious.
Erland Sommarskog, SQL Server MVP, [email protected]
Yeah I let the application allegedly "waste" a few milisseconds a day autogrowing the log file. Common, how long do you think it takes for a log file to grow a few GB on most storage systems nowadays? As long as you set an appropriate autogrow
interval so your log file doesn't get too fragmented (full of VLFs), you'll be perfectly fine in most situations.
Lets say you have a logical disk dedicated to log file storage, but it is shared across multiple databases within the instance. Having allocated space for the log files means there will be not much free space left in the disk in case ANY database needs more
space than the others due to a peak in transactional workload, even though other databases have unused space that could have been used.
What if this same disk, for some reason, is also used to store the tempdb log file? Then all applications will become unstable.
These are the main reasons I don't recommend people blindly crucify keeping log files small when possible. I know there are many people who disagree and I'm aware of their reasons. Maybe we just had different experiences about this subject. Maybe people
just haven't been through the nightmare of having a corrupted system database or a crashed instance because of insuficient log space in the middle of the day.
And you are right about the size of the backup, I didn't put it correctly. It isn't the size of the backup that gets smaller (although the backup operation will run faster, having tested this myself), but the benefit from backing up a database with a small
log file is that you won't need the extra space to restore it in a different environment such as a BI or DEV server, where recuperability doesn't matter and the database will be on simple recovery mode.
Restoring the database will also be faster.
Just because there are clouds in the sky it doesn't mean it isn't blue. But someone will come and argue that in addition to clouds, birds, airplanes, pollution, sunsets, daltonism and nuclear bombs, all adding different colours to the sky, this
is an undocumented behavior and should not be relied upon.

Database reorg or coalition

Hi,
I have a verybig table with 500,000 rows and it's growing everyday with 70-80 rows.When i query this table it's taking lot of cpu time becoz it has to scan all 500,000 rows.Ofcourse i dont needthose many rows in that table i can delete rows whic are prior to a month.If i delete those rows using delete,however the empty blocka will be there untill reorganise tablespace.So if i run query now it stil need to search all 500,000 rows eventhough there is no data.To get rid of this i am planning to user reorg or coalition.Please suggest me some yntaxfor these and procedure todo it.That table is crucial to orgnisation so i dont want to lock that table as well.
Thanks
Anand

Anand
some points first
1) 500,000 rows is not very big in Oracle terms (depending on record width)
2) why are you using full table scans - you should use indexes if possible
ok - now some answers
when rows are deleted the space blow the HWM will be reused by new rows, so if you delete 100,000 rows then the fts time will not decrease but the table segment size will no longer increase.
if using 10g and ASSM then - after deleting rows you could do
"alter table big_table enable row movement"
"alter table big_table shrink space"
this only locks the table for a few seconds at the end in order to move the HWM and indexes are maintained
Chris

Impact with online reorg on Source ECC Oracle tables

Hi,
We are planning to do online reorg on few Oracle tables of our ECC system. The same table are replicated from SLT to HANA.
Could you please let me know if it affects the replication ? do I need to stop the replication in SLT while online reorgs run on source ECC tables?

Hi Sandeep,
In that case I do not think you have to stop the Master Job in SLT.Still I would suggest to test this scenario in Sandbox/Sandpit or Development system first before you execute in Prod.
Regards,
Joydeep.

Reorgs

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