Difference table size values
Hello Experts,
I want to know the sizes of some tables (e.g. TCURR). In different threads the transaction db02old and the function module 'DB_GET_TABLE_SIZE' are mentioned for that purpose.
I wonder that using these methods two different sizes are
Using transaction db02old I get a size of 81.920 for TCURR.
Using function module 'DB_GET_TABLE_SIZE' I get a size of 79.937 for TCURR. Why is there a difference between both values?
Thanks for your help.
Regards,
Tobias
DB02old gives the correct information as it directly updates value from Database.
Function module 'DB_GET_TABLE_SIZE' depends on the variables you have set and it useful for ccms operations.
regards
nag
Edited by: welcomenag on Jul 6, 2009 4:15 PM
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we have 2 db's called UT & ST.. with same setup and data also same
running on hp-ux itanium 11.23 with same binary 9.2.0.6
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Commit complete.
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SQL>where segment_name='BIG';
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256 -- same 2 extents 256KB since the HWM is not changed after DELETE
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1 row selected.
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419 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
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0 sorts (disk)
1 rows processed
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COUNT(*)
135496
Execution Plan
Plan hash value: 3724264953
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| 0 | SELECT STATEMENT | | 1 | 538 (1)| 00:00:07 |
| 1 | SORT AGGREGATE | | 1 | | |
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1943 consistent gets
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419 bytes received via SQL*Net from client
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Rgds,
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Here is the test I ran;
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BUFFER_ BLOCKS
KEEP 1977
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SQL> show parameter db_keep_cache_size
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db_keep_cache_size big integer 20M
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SQL> alter system set db_keep_cache_size = 5M scope=both;
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135496
SQL> select count(*) from v$bh where objd = (select data_object_id from dba_objects where owner = 'HR' and object_name = 'T1');
COUNT(*)
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d/r b/n check and value table?
wjhat is the exct difference between check table and value table
what is the check table and value table
check table and value table
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org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: could not execute update query; uncategorized SQLException for SQL [update SS_ChangeLogs set owningBinderKey=?, owningBinderId=? where (entityId in (? , ?)) and entityType=?]; SQL state [HY000]; error code [1206]; The total number of locks exceeds the lock table size; nested exception is java.sql.SQLException: The total number of locks exceeds the lock table size
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
2013-07-31 06:27:22,393 INFO [CT-kablink] [org.kablink.teaming.lucene.LuceneProvider] - (kablink) Committed, firstOpTimeSinceLastCommit=1375251142310, numberOfOpsSinceLastCommit=12. It took 82.62174 milliseconds
2013-07-31 06:28:22,686 INFO [Sitescape_Worker-9] [org.kablink.teaming.jobs.CleanupJobListener] - Removing job send-email.sendMail-1375252102500
2013-07-31 06:29:51,309 INFO [Sitescape_Worker-10] [org.kablink.teaming.jobs.CleanupJobListener] - Removing job send-email.sendMail-1375252191099
2013-07-31 06:32:08,820 WARN [http-8080-2] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:08,820 ERROR [http-8080-2] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:10,775 WARN [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:10,775 ERROR [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:12,305 WARN [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:12,305 ERROR [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:14,605 WARN [http-8080-3] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:14,606 ERROR [http-8080-3] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:16,056 WARN [http-8080-3] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:16,056 ERROR [http-8080-3] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:24,166 WARN [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1206, SQLState: HY000
2013-07-31 06:32:24,166 ERROR [http-8080-1] [org.hibernate.util.JDBCExceptionReporter] - The total number of locks exceeds the lock table size
2013-07-31 06:32:24,167 WARN [http-8080-1] [org.kablink.teaming.spring.web.portlet.DispatcherPortlet] - Handler execution resulted in exception - forwarding to resolved error view
org.springframework.jdbc.UncategorizedSQLException: Hibernate flushing: could not insert: [org.kablink.teaming.domain.AuditTrail]; uncategorized SQLException for SQL [insert into SS_AuditTrail (zoneId, startDate, startBy, endBy, endDate, entityType, entityId, owningBinderId, owningBinderKey, description, transactionType, fileId, applicationId, deletedFolderEntryFamily, type, id) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 'A', ?)]; SQL state [HY000]; error code [1206]; The total number of locks exceeds the lock table size; nested exception is java.sql.SQLException: The total number of locks exceeds the lock table size
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.orm.hibernate3.HibernateTransactionManager.convertJdbcAccessException(HibernateTransactionManager.java:805)
at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:791)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:664)
It always logs the Mysql error code 1206:
MySQL :: MySQL 5.4 Reference Manual :: 13.6.12.1 InnoDB Error Codes
1206 (ER_LOCK_TABLE_FULL)
The total number of locks exceeds the lock table size. To avoid this error, increase the value of innodb_buffer_pool_size.
The value of innodb_buffer_pool_size is set to 8388608 (8MB) on my server.
In the documentation (MySQL :: MySQL 5.4 Reference Manual :: 13.6.3 InnoDB Startup Options and System Variables) it says that the default is 128MB.
Can i set the value to 134217728 (128MB) or will this cause other problems? Will this setting solve my problem?
Thanks for your help.I already found an entry from Kablink:
https://kablink.org/ssf/a/c/p_name/s...beonprem_url/1
But i think this can't be a permanent solution...
Our MySQL Server version is 5.0.95 running on sles11 -
Index size keep growing while table size unchanged
Hi Guys,
I've got some simple and standard b-tree indexes that keep on acquiring new extents (e.g. 4MB per week) while the base table size kept unchanged for years.
The base tables are some working tables with DML operation and nearly same number of records daily.
I've analysed the schema in the test environment.
Those indexes do not fulfil the criteria for rebuild as follows,
- deleted entries represent 20% or more of the current entries
- the index depth is more then 4 levels
May I know what cause the index size keep growing and will the size of the index reduced after rebuild?
Grateful if someone can give me some advice.
Thanks a lot.
Best regards,
TimmyPlease read the documentation. COALESCE is available in 9.2.
Here is a demo for coalesce in 10G.
YAS@10G>truncate table t;
Table truncated.
YAS@10G>select segment_name,bytes from user_segments where segment_name in ('T','TIND');
SEGMENT_NAME BYTES
T 65536
TIND 65536
YAS@10G>insert into t select level from dual connect by level<=10000;
10000 rows created.
YAS@10G>commit;
Commit complete.
YAS@10G>
YAS@10G>select segment_name,bytes from user_segments where segment_name in ('T','TIND');
SEGMENT_NAME BYTES
T 196608
TIND 196608We have 10,000 rows now. Let's delete half of them and insert another 5,000 rows with higher keys.
YAS@10G>delete from t where mod(id,2)=0;
5000 rows deleted.
YAS@10G>commit;
Commit complete.
YAS@10G>insert into t select level+10000 from dual connect by level<=5000;
5000 rows created.
YAS@10G>commit;
Commit complete.
YAS@10G>select segment_name,bytes from user_segments where segment_name in ('T','TIND');
SEGMENT_NAME BYTES
T 196608
TIND 327680Table size is the same but the index size got bigger.
YAS@10G>exec show_space('TIND',user,'INDEX');
Unformatted Blocks ..................... 0
FS1 Blocks (0-25) ..................... 0
FS2 Blocks (25-50) ..................... 6
FS3 Blocks (50-75) ..................... 0
FS4 Blocks (75-100)..................... 0
Full Blocks ..................... 29
Total Blocks............................ 40
Total Bytes............................. 327,680
Total MBytes............................ 0
Unused Blocks........................... 0
Unused Bytes............................ 0
Last Used Ext FileId.................... 4
Last Used Ext BlockId................... 37,001
Last Used Block......................... 8
PL/SQL procedure successfully completed.We have 29 full blocks. Let's coalesce.
YAS@10G>alter index tind coalesce;
Index altered.
YAS@10G>select segment_name,bytes from user_segments where segment_name in ('T','TIND');
SEGMENT_NAME BYTES
T 196608
TIND 327680
YAS@10G>exec show_space('TIND',user,'INDEX');
Unformatted Blocks ..................... 0
FS1 Blocks (0-25) ..................... 0
FS2 Blocks (25-50) ..................... 13
FS3 Blocks (50-75) ..................... 0
FS4 Blocks (75-100)..................... 0
Full Blocks ..................... 22
Total Blocks............................ 40
Total Bytes............................. 327,680
Total MBytes............................ 0
Unused Blocks........................... 0
Unused Bytes............................ 0
Last Used Ext FileId.................... 4
Last Used Ext BlockId................... 37,001
Last Used Block......................... 8
PL/SQL procedure successfully completed.The index size is still the same but now we have 22 full and 13 empty blocks.
Insert another 5000 rows with higher key values.
YAS@10G>insert into t select level+15000 from dual connect by level<=5000;
5000 rows created.
YAS@10G>commit;
Commit complete.
YAS@10G>select segment_name,bytes from user_segments where segment_name in ('T','TIND');
SEGMENT_NAME BYTES
T 262144
TIND 327680Now the index did not get bigger because it could use the free blocks for the new rows. -
How we will know that dimension size is more than the fact table size?
how we will know that dimension size is more than the fact table size?
Hi,
Let us assume that we are going to take Division and distribution channel in a dimension and assume we have 20 distinct values for Division in R/3 and 30 Distinct values for Distribution channel .So Maximum, we can get 20 * 30 records in dimension table and we can take rough estimation of records in the cube by observing the raw data in source system.
With rgds,
Anil Kumar Sharma .P -
Lock table size change in instance profile RZ10
i need your help. I changed the table size from 10000 to 17000 and then to 20000 but still have the same table size as before.i used rz10 to change the parameter enque/table_size.
the steps i followed are as in all documents i can find.
1. change parameter value
2. save it (parameter and instance)
3. activate it.
4.on restart instance (i just left it for the offline backup to do this).
on the 4th step is that enough, because after the system came back i checked the parameter in rz11 and the current value on the parameter is still 10000. (owner entries and granule still 12557 as before)
am i missing something?
vinaka
epeliHi,
it COULD be that the offline backup did indeed no restart of the instance. From Oracle I know that there is a so called "reconnect-status" where the SAP instance is trying over a defined period of time to log to the database again after the workprocesses lost connection to the database processes. In this timeframe the instance is not to be considered as restarted.
If you check ST02 you see the point of time where the instance was restarted in reality the last time. If this date is before your offline backup you need to do the restart manually.
Best regards, Alexander -
Estimate table size for last 4 years
Hi,
I am on Oracle 10g
I need to estimate a table size for the last 4 years. So what I plan to do is get a count of data in the table for last 4 years and then multiply that value by avg_row_length to get the total size for 4 years. Is this technique correct or do I need to add some overhead?
ThanksYes, the technique is correct, but it is better to account for some overhead. I usually multiply the results by 10 :)
The most important thing to check is if there is any trend in data volumes. Was the count of records 4 years ago more or less equal to the last year? Is the business growing or steady? How fast is it growing? What are prospects for the future? Last year in not always 25% of last 4 years. It happens that last year is more than 3 other years added together.
The other, technical issue is internal organisation of data in Oracle datafiles. The famous PCTFREE. If you expact that the data will be updated then it is much better to keep some unused space in each database block in case some of your records get larger. This is much better for performance reasons. For example, you leave 10% of each database block free and when you update your record with longer value (like replace NULL column with actual 25-characters string) then your record still fits into the same block. You should account for this and add this to your estimates.
On the other hand, if your records get never updated and you load them in batch, then maybe they can be ORDERed before insert and you can setup a table with COMPRESS clause. Oracle COMPRESS clause has very little common with zip/gzip utilities, however it can bring you significant space savings.
Finally, there is no point to make estimates too accurate. They are just only estimates and the reality will be almost always different. In general, it is better to overestimate and have some disk space unused than underestimate and need to have people to deal with the issue. Disks are cheap, people on the project are expensive. -
Hi
I've set up an old 1121 access point as a WGB on our unified (i.e. lightweight) wireless network. It works fine, but the VLAN that
the wireless side connects to has between 200 and 300 clients at any one time. The bridge table size seems to be fixed at 300 entries, and I'm concerned that at some point this may overflow. I've put this in the wireless config:
int dot110
no bridge-group 1 source-learning
bridge-group 1 block-unknown-source
to try to keep the size of the table down, but it seems to make no difference. Is my only option to move the WGB to a VLAN which has fewer clients?
Thanks
Max Caines
University of WolverhamptonHi , I fetched this for you:
Total number of forwarding database elements in the system. The memory to hold bridge entries is allocated in blocks of memory sufficient to hold 300 individual entries. When the number of free entries falls below 25, another block of memory sufficient to hold another 300 entries is allocated. Thus, the total number of forwarding elements in the system is expanded dynamically, as needed, limited by the amount of free memory in the router.
Now this docu if for router, but since both AP and Routers run IOS Code then the logic should still be the same.
So either:
1- Keep me posted on what happens when you indeed reach 300 on current table to see if AP will allocate extra 300 when 25 threshold is reached
or
2- move wgb to less busy vlan
Thanks
Serge
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