Server Administration :: Single Big Tablespace Versus Multiple Tablespace?
Jan 26, 2011
My database version is
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE 11.1.0.7.0 Production
TNS for Linux: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
My os version is
Linux damdat01 2.6.18-128.7.1.el5 #1 SMP Wed
Aug 19 04:00:49 EDT 2009 x86_64 x86_64 x86_64
GNU/Linux
My database is OLP system.
My question is what are the advantages and disadvantages having one single tablespace versus multiple tablespace?
Easy to maintain when you have single tablespace. but hard to track the IO issues if you have one single tablespace.
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May 27, 2011
i have a tablespace which contains 121 datafile(max limit reached) as a dba what we have to do?
creating a new tablespace with a datafile and assign the users to the current tablespace which i created now.iif the above process is correct,after some time the tablespace which was filled up got freed up.now can i give the access to the users previous (i.e. freed up tablespace) and current tablespaces
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Jan 6, 2012
I have one database which is recently upgraded from oracle 8.1.5 to oracle 10.2.0.4.The database is having around 300 tablespace and total size of the database is 1.5 TB.
The database was created in oracle 8i and all the teblespace were DMT(Dictionary Managed Tablespace) .Usually after up gradation all the tablespace are in DMT mode. Now my requirement is to convert all the tablespace into LMT (Locally Managed Tablespace) so that I can AVAIL ALL THE FEATURES OF LMT.
This database is a mission critical database and very less downtime can be allowed.
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Jan 18, 2012
How to import dump into specific tablespace instead of default tablespace users.
I want to import my dump file to newly created tablespace ,so how can i do that . I have created new user called cvm and while creating it i mentioned default tablespace to newly created tablespace . But when i try to import my dumo file it goes to users tablespace .
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Dec 9, 2008
Environment Setup
Oracle Server 11g on HP-UX
Oracle Client on Windows
I am using swingbench tool to generate load on DB and using OLTP like benchmark i am comparing the performance of plain data and encrypted data.
I have created two different database. one for tde and other for plain. I have populated same number of rows in both databases. Then i start running the benchmark and i use SAR to collect disk I/O's, VSAR to CPU usage.
From the sar report it seems that,
Oracle plain has faster transactions, it uses minimum CPU. But when look in tot the Reads/Writes TDE has lower than the plain.
If TDE needs to encrypt the data to store in the disks it should occupy more space than the plain data. Then the I/O should be more in TDE..
Note: Bcz the DB parameters are same, number of rows in the tables are same. File system and its block size are same. I will run the swingbench seperately for both the databases.
I am attaching the excel sheet for sar results. Let me know if you need more information
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Aug 22, 2012
I have taken the tablespace export it came 2.1gb and for the same user i have taken the schema export it came 5.1gb
why their is a lot of difference in size?
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Sep 26, 2011
Today I see my system tablespace is 98%, 480 MB used. Why the system tablespace is so big?
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Mar 5, 2012
I am NOT a db admin but I do 'maintain' my application that runs with oracle 8i. I am now getting the error on certain workstations:
ORA-03232: unable to allocate an extent of 16 blocks from tablespace 3
I have access to DBA Studio and all the tables in the STORAGE tab show no more than 65% usage
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Jun 7, 2010
I have a tablespace with 5GB size, data in the tablespace is 4.8GB. if i want to shrink the tablespace then much size could be shrinked.
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Jun 24, 2012
Problem Description: There are five range partitioned tables which are partitioned by date,designed by previous DBA.Four tables are in one tablespace and one more table is in another tablespace.For every three months there are two tablespaces are created autamatically in new names for future dates.There is no scheduled job for this.How they are created?.This is our question.
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Jan 4, 2010
I have one tablespace PSINDEX with Maxsize of 6 GB. But when I query the tablespace its showing the BYTES is greater than MAXBYTES.
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May 4, 2012
In my database ,the size of the system tablespace is 1024M.now i found its free space is 477.875M.
SQL> SELECT TABLESPACE_NAME,SUM(BYTES)/1024/1024 M FROM DBA_FREE_SPACE where tablespace_name = 'SYSTEM' GROUP BY TABLESPACE_NAME ;
TABLESPACE_NAME M
--------------- -------
SYSTEM 477.875
In system tablespace ,the max size segment is IDL_UB1$,it is 167M
SQL> SELECT SEGMENT_NAME, SX || 'M' "Size" FROM (SELECT SEGMENT_NAME,SUM(BYTES)/1024/1024 SX FROM DBA_SEGMENTS WHERE TABLESPACE_NAME = 'SYSTEM' GROUP BY SEGMENT_NAME) WHERE SX > 100 ORDER BY SX DESC;
SEGMENT_NAME Size
------------- -----
IDL_UB1$ 167M
QUESTION: what's the table IDL_UB1$ used for ?
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Jan 4, 2011
My tablespace contains two datafiles dfile1.dbf and dfile2.dbf on D drive of my filesystem. Now i copied these dbf files on pasted it on a location in E drive. Now i want my tablespace to use dbf files pasted in new location.
Will i have to Alter Tablespace Add Datafile with Reuse clause
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Aug 27, 2012
In My database rollback segment space is not releasing space even though, there is no transaction is using RBS. RBS tablespace size is around 70GB. Unfortunately still our environment is running in 9i due to application code
SQL> show parameter undo
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
undo_management string MANUAL
undo_retention integer 1800
undo_suppress_errors boolean FALSE
undo_tablespace
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Feb 26, 2010
For a locally managed tabelspace, the dropped segment is changed to a Temp. Segment, to prevent bitmap from being updated.
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Jul 6, 2013
My Oracle db have this tablespace named INDX which is 80% full. I tried to query on the table, user using it but there is no one using this tablespace
May I know if there is a query that i can used to find out which dba_object is consuming the 80% of this tablespace.
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Feb 16, 2012
Erroneously created datafile, re: "/path/../large_rbs_03.dbf" was created under the SYSTEM tablespace which is supposedly be in the LARGE_RBS tablespace.
How do I make the said datafile be under LARGE_RBS?
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Feb 7, 2011
As the undo segments are used in round robin fashion, Is it possible that with varying load (concurrent users, size and number of transactions), the size of Undo tablespace on a particular day is less than the Undo tablespace size few days back, by any chance?
As a basic understanding I know that Undo is preserved for read consistency and transaction, instance recovery So if there are lot of transaction on a database on 05 Feb and before that, but there aren't any transactions on 6,7,8,9, then on 10th Feb can we see the Undo tablespace size is less than that of 05 Feb?
In the following case when data belonging to table is not required for any queries, transactions, even then the undo size is not restored upon dropping the table.
As such for large operations and batch processes shall we keep undo tablespace with files as 'Autoextend' with 'Maxsize' as 'Unlimited'?
SQL> select b.tablespace_name, Total_Kbytes_Available/1024 Tot_Mbytes_Available,
Kbytes_alloc/1024 Mbytes_allocated, kbytes_free/1024 Mbytes_Free_from_allocated,
((Kbytes_alloc - kbytes_free)*100/ Total_Kbytes_Available) Pctused
2 from ( select sum(bytes)/1024 Kbytes_free,
3 tablespace_name
4 from sys.dba_free_space
[code]....
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Mar 7, 2010
I want to increase the size of the tablespace but when i login as sysdba or admin user i can just see the 21 tables in the dba_tablespaces or user_tablespaces. I want to see the tablespaces related to the application.
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Jul 12, 2010
Due to improper documentations of a certain project, I need to drop a DEFAULT tablespace of a newly created instance including it's associated datafiles by using this command:
"DROP TABLESPACE <tablespace name> INCLUDING CONTENTS AND DATAFILES;"
The default tablespace name is QWER (qwer01.dbf) and I added 2 datafiles in it, re: OPD_SML01.dbf & EXYT_SML01.dbf.
Do I have to do it online or offline?
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Jun 30, 2010
i got a error temp tablespace cannot be resized. How to Resize Temp Tablespace?
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Aug 17, 2012
i want to create tablespace in raw partion on windows.I have added a hard disk and added extended partition to it. Then created 4 logical partitions of 256 MB with diskpart.exe.I have assigned a drive letter to one of them as X:
However, I am having trouble in creating tablespace on it. I referred to [URL]... I get following error,
C:UsersAdministrator>sqlplus
SQL*Plus: Release 11.2.0.1.0 Production on Fri Aug 17 15:32:17 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Enter user-name: SYSTEM
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing opti
SQL> create tablespace exampletb datafile '\.X:accounting_1' size 100;
create tablespace exampletb datafile '\.X:accounting_1' size 100
ERROR at line 1:
ORA-03214: File Size specified is smaller than minimum required
SQL> create tablespace exampletb datafile '\.X:accounting_1' size 502;
create tablespace exampletb datafile '\.X:accounting_1' size 502
[code]...
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Oct 12, 2011
We have a database running with Oracle 10.2.0.4 on Solaris 5.10 [SUN SPARC v240] where the assigned TEMP tablespace size looks to be quite huge ( = 8GB!). There are not much SQL queries being run on the database, but what can I do/find/investigate to be sure of how much TEMP space is 'actually' required for the application to run OK?
Note. I have seen the previous DBA's have marked AUTOEXTEND = ON for the TEMP datafiles as well.
Separate query (but linked to TEMP tablespace):
Even if the TEMP datafiles are created with AUTOEXTEND = ON, sometimes I am seeing 'ORA-01652: unable to extend temp segment by 128'.
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Jan 24, 2012
we have a tablespace of size 900 GB where 90% of space is occupied by two tables having BLOB data and now i need to drop these two tables and then to recover the space, i need to resize the tablespace (datafiles).
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Dec 23, 2012
My system tablespace size is 800mb and it sends an alert saying that it has exceeded 80% of its usage.However its total max size is 30gb.
FYI
Its autoextensible is set to 'YES'.
2 Node RAC database.
File system is ASM
My question here is... is it advicable to resize a system tablespace to some size when autoextensible is set to 'YES'
or genrally can we resize a system tablespace when autoextensible is set to 'No' ?
SQL> col FILE_NAME format a40
SQL> /
FILE_NAME BYTES/1024/1024 AUT MAXBYTES/1024/1024
---------------------------------------- --------------- --- ------------------
+DATA/ge01114/datafile/system.556.2254454 800 YES 30000.9844
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Mar 19, 2010
The SYSTEM tablespace refuses to autoextend (3 segments in SYSTEM tablespace unable to extend). It sits on its current size of 559MB (auto set to 2GB, increment 10M).
I guess there are no free extends that are that big as 10M.
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Apr 26, 2012
In our production database server Index tablespace is not growing now... On average index tablespace increases 200 MB to 250 MB per day. Last two weeks index tablespace does not increase..
I am giving you all a statistics of our production db Tablespace usage..
Date Globusdataxml(MB)Globusindexxml(MB)
23-4-2012 26321025 1581.94
24-4-2012 24633.31 1584.25
25-4-2012 23410.88 1576.25
26-4-2012 22186.19 1573.25
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Dec 20, 2011
Can we add a datafile mapped to a shared network drive in windows server.
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Oct 8, 2012
I have a requirement to get create a separate temporary tablespace for application user, the tablespace name is OPC_TEMP on Oracle 11g. During the application installation we are expecting this tablespace to show up under the user_tablespaces but it doesn't. When I tried to check with the DBA, they mentioned that it is possible for this tablespace to be listed under the user_tablespaces because to have this, the quota has to be assigned to the tablespace and it is not possible to assign quota to temporary tablespace on oracle 10.2 and above due to certain limitation (oracle metalink ID 331657.1).
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Feb 24, 2012
[code]SQL> set heading off
SQL> set pagesize 0
SQL> set long 1000000
SQL> set feedback off
SQL> select
2 dbms_metadata.get_ddl('TABLESPACE','TBLS_DATA')
3 from
4 dual
5 /
ERROR:
ORA-31603: object "TBLS_DATA" of type TABLESPACE not found in schema
"JACK"
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 105
ORA-06512: at "SYS.DBMS_METADATA", line 2806
ORA-06512: at "SYS.DBMS_METADATA", line 4333
ORA-06512: at line 1
When i try to extract ddl of tablespace from a schema JACK, i get error.This tablespace TBLS_DATA does exist in the database.
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