which data dictionary view would you query to see the free extents in a tablespace.
i use dba_free_space;
SQL> select tablespace_name,sum(bytes),sum(blocks) from dba_free_space where
tablespace_name = 'SYSTEM' GROUP BY TABLESPACE_NAME;
TABLESPACE_NAME SUM(BYTES) SUM(BLOCKS)
------------------------------ ---------- -----------
SYSTEM 9830400 1200
When we are using pga_aggregate_target and sort area is automatically managed by Oracle. Why oracle is not allowing for auto allocating extents in TEMP and still extents of uniform size of 1 MB is used.
View 9 Replies View RelatedHow to free up the tablespace size when it reaches its threshold (Max limit)?
Say for example USERS & SYSAUX tablespace reaches above 90%.
We are migrating from a 9i db to 11g and we've been testing our apps on a similar (but not exact) machine as our production box.
Normally when we take a full export of the production data (on 9i) and import it into another 9i DB, the tables and indexes are created with the initial size large enough to hold the entire table. We also do our export with the compress extents param set to 'Y'.
However, we've noticed that when we import our data into the 11g DB, that tables are being created with multiple extents...sometimes up to 10 or 15. This seems to happen even with tables that don't even have extents on db that the export was taken from.
There ARE some differences in our 11g DB that i imagine might be the culprit, i've just been unable to narrow one of them down.
the differences i know of are:
a) the target DB has locally managed tablespaces while the source 9i DB had dictionary managed tablespaces
b) the block size is larger on the target 11g DB. 8192 vs 2048
c) the nchar character set on the source DB is AL16UTF16 and the target is UTF8 (we actually only have an nchar column in one of our tables...and also, the UTF8 setting was actually a mistake that we're correcting this weekend with a fresh DB and fresh import)
What would cause the import to produce all these extra tablespaces?
create a procedure or cursor to allocate extents to all tables with zero rows for all the user in the database.I have used the below query to check table with zero rows and no extents allocated.
select onwer,table_name,initial_extent
from dba_tables where initial_extent is null order by owner;
I generated the query to allocate extents by using concatenation in the above query.
select 'ALTER TABLE '||table_name|| ' ALLOCATE EXTENT; '
from dba_tables where initial_extent is null order by owner;
now I want the extent allocation for such table auutomatically for aal the tables with zero rows.
for some reason,i want to know which data block contains free space,or which table/index contains free space.
View 6 Replies View RelatedHow do we find the free space in tablespaces in a standby database
View 4 Replies View Relatedwe have 5 tempfile ( each of 65 gb ) allocated to TEMP tablespace...and still we are running in short of space..when i checked the TEMP segment usage, i am able to see much FREE blocks. how to release those space ?
TABLESPACE_N FILE_ID FILE_NAME Size(MB)
------------ ---------- ------------------------------------------- ----------
TEMP 1 +DATA/tedw/tempfile/temp.3043.727779755 65535.9688
TEMP 2 +DATA/tedw/tempfile/temp.3042.727779749 65535.9688
TEMP 3 +DATA/tedw/tempfile/temp.3041.727779741 65535.9688
TEMP 4 +DATA/tedw/tempfile/temp.4065.730387401 65535.9688
TEMP 5 +DATA/tedw/tempfile/temp.4075.731586241 65535.9688SELECT tablespace_name,
total_blocks,
used_blocks,
free_blocks,
total_blocks*16/1024 as total_MB,
used_blocks*16/1024 as used_MB,
free_blocks*16/1024 as free_MB
FROM v$sort_segment;
TABLESPACE_N TOTAL_BLOCKS USED_BLOCKS FREE_BLOCKS TOTAL_MB USED_MB FREE_MB
------------ ------------ ----------- ----------- ---------- ---------- ----------
TEMP 9994624 1007360 8987264 156166 15740 140426
1 row selected.
further when i checked the session details using TEMP segment, i got below output:
SELECT b.tablespace, b.segfile#, b.segblk#, b.blocks, a.sid, a.serial#,a.username, a.osuser, a.status
FROM v$session a,v$sort_usage b
WHERE a.saddr = b.session_addr
ORDER BY b.tablespace, b.segfile#, b.segblk#, b.blocks;
TABLESPACE SEGFILE# SEGBLK# BLOCKS SID SERIAL# USERNAME OSUSER STATUS
------------------------------- ---------- ---------- ---------- ---------- ---------- ------------------------------ ------------------------------ --------
TEMP 15001 3549184 576 475 1237 EQUIPMENT infa ACTIVE
TEMP 15001 4002368 64 796 4677 CRM infa ACTIVE
TEMP 15002 580608 20352 868 615 EDW infa ACTIVE
TEMP 15002 3962112 832 92 1065 EDWSTG infa ACTIVE
TEMP 15002 4021120 576 1236 7257 EQUIPMENT infa ACTIVE
TEMP 15003 23936 64 819 5586 EDW infa ACTIVE
TEMP 15003 3798400 832 855 1801 EDWSTG infa ACTIVE
TEMP 15004 205056 21632 795 8171 EDW infa ACTIVE
TEMP 15004 4031488 832 403 1299 EDWSTG infa ACTIVE
TEMP 15004 4131456 576 19 6802 EQUIPMENT infa ACTIVE
TEMP 15005 3617856 832 1166 6204 EDWSTG infa ACTIVE
TEMP 15005 3741760 576 862 953 EQUIPMENT infa ACTIVE
TEMP 15005 4042752 18176 1226 5379 CDM infa ACTIVE
3 rows selected.
if i killed the SID - 1226, then those temp blocks ( 18176 blocks ) will be released and can other session use that space further ?
there is one more column - SEGBLK#
explain what is the exact meaning of this column ?
to reclaim the space, should i issue below command -
sql>alter tablespace TEMP coalesce;
value of "Shared Pool Free %" in v$sysmetric is larger than 100%
SQL> select value, group_id from v$sysmetric where metric_name = 'Shared Pool Free %';
VALUE GROUP_ID
186.45107 2
186.4685382 3
SQL> show parameter shared_pool
NAME TYPE VALUE
-------------- ------------ --
shared_pool_reserved_size big integer 832149913
shared_pool_size big integer 0
SQL> show sga
Total System Global Area 1.0155E+11 bytes
Fixed Size 2163880 bytes
Variable Size 8.1068E+10 bytes
Database Buffers 2.0401E+10 bytes
Redo Buffers 79310848 bytes
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
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.
One tablespace used in two different schemas ,in this case how much space used,free space and persentage of used in each schema level.
Example: USERS tablespace used in two different schemas HR,SCOTT. in this suche case to find the total size of tablespace, used and free space of each schema level.I used the below query not giving appropriate result.
SELECT TABLESPACE_NAME,
OWNER, round(SUM(BYTES/1024/1024),2) "Used Space in MB"
FROM DBA_SEGMENTS
where tablespace_name not in ('SYSTEM','TEMP','SYSAUX','EXAMPLE','UNDOTBS1')
group by tablespace_name,owner
order by tablespace_name
I need to find the tablespace size (used and free) for a partitioned table
View 3 Replies View RelatedOur production DB version is 11.2.0.1 and we do use DBArtisian. Everyday morning we check table space usage using that tool and it generates the below listed query. It used to run in 15 secs. But since one week it is running for 5/6/8 mins. I have updated the statistics on sys objects and tuning advisor created the execution plan. So, now it is running in 2 mins. Nothing has been changed in the DB configuration. I see the same query running in secs in dev environment. understand what might be the issue and how could I improve the performance of this query.
SELECT SUB.TABLESPACE_NAME, SUB.STATUS, SUB.EXTENT_MANAGEMENT, SUB.SEGMENT_SPACE_MANAGEMENT, SUB.TOTAL_SPACE_MB, SUB.USED_SPACE_MB, SUB.FREE_SPACE_MB, SUB.PERCENT_FREE_SPACE, SUB.CONTENTS, SUB.TABLESPACE_GROUP, CASE WHEN SUB.TABLESPACE_NAME = P.VALUE AND SUB.CONTENTS = 'UNDO' THEN 'YES' ELSE 'NO' END
[code]...
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.
We a running oracle9i database and forms 6i application.
We have 4 gb ram size and sized the sga for 700mb pga for 400mb for past 4 months there is no problem.
Now from last week we encounter the server hang, and we do restart. How to check reason for hanging.what are all the check list to carried out.
How can I check whether the ASM is used in the environment? how I can check for it and if being used, how to connect to that instance later on.
View 5 Replies View Relatedi'm a student currently learning database administration security.
I need to create a tablespace for administration of database but i don't know what datafile settings are best suited for admin usage.
I have attached the schema that was given to me for this assignment.
you have some 500 Db how will u check the alertlog file. do u do it manually or is their any tool to check the alertlog files. how to check it.
View 7 Replies View RelatedHow can i check a partition whether it has been compressed? just as flowing test,i can not get the information about partition P_L1 whether been compressed.
SQL> Select
2 aa.compression,
3 aa.partition_name
4 From dba_tab_partitions aa
5 Where aa.table_name = 'TB_HXL_LIST';
COMPRESS PARTITION_NAME
-------- ------------------------------
DISABLED P_L1
DISABLED P_L2
DISABLED P_L3
DISABLED P_L4
SQL> Alter Table tb_hxl_list compress;
Table altered.
SQL> Alter Table TB_HXL_LIST
2 Move Partition P_L1 compress;
Table altered.
SQL> Select
2 aa.compression,
3 aa.partition_name
4 From dba_tab_partitions aa
5 Where aa.table_name = 'TB_HXL_LIST';
COMPRESS PARTITION_NAME
-------- ------------------------------
ENABLED P_L1
ENABLED P_L2
ENABLED P_L3
ENABLED P_L4
How to check whether database is dedicated or shared ?
View 1 Replies View Relatedquick check on a hidden parameter? I need to know the default value and possible values for _serial_direct_read on various releases, I have only 11.2.0.3 available right now and I'ld like to know this for 11.2.x.x 11.1.x.x, and 10.2.x.x.
Below is the query that will show what it is currently which (unless you've changed it) will be the default: auto for my 11.2.0.3. Then to see the options, try to set it to something wrong, my options are false/true/never/auto/always. I think false/true were the only choices for 10.2 and are maintained only for compatibility. But I can't rememebnr 11.1.
orcl>
orcl> set lin 80
orcl> select KSPPSTVL from x$ksppcv join x$ksppi using (indx) where ksppinm='_serial_direct_read';
KSPPSTVL
--------------------------------------------------------------------------------
auto
orcl>
orcl> alter system set "_serial_direct_read"=rubbish;
alter system set "_serial_direct_read"=rubbish
*
ERROR at line 1: ORA-00096: invalid value RUBBISH for parameter _serial_direct_read, must be from among false, true, never, auto, always
orcl>
update: added 11.1.x.x to my wishlist
Actually in our environment , sysadmins are upgrading java versions on Unix (HP & Solaris) Machines and they have asked the query whether oracle database uses Java or not?
If it uses then all the databases need to be shut down for their planned activities and if not no need to shutdown the databases.
i am getting this error during expdp ORA-01555 -snapshot too old
1. i increased undo_retention i.e 50000
2. i execute expdp during late night when almost zero user is online so no commit from any other session.
3. we have a table having BLOB data type field in a table which is 500 GB in size.complete DB size is 700 GB
where and why this error exists.if corruption of BLOB so how to check that etc. the same error is occurring in three of our data centres during expdp.
would want to check which tables located in which datafiles.
Tried with this command:
select B.FILE_NAME from dba_segments a, dba_data_files b
where a.header_file=b.file_ID and segment_name='TABLE_NAME'
Seems like it only shows 1 datafile. Some tables are large and i suppose it's resided in more than 1 datafile.
I need to display the parameter and status of DB for listener and Read Only.
I know those value could be get from command line , but could we get the values of Listener and Read only by SQL/PlSQL? So I can get it through the query of DB.
we have a few profiles in dba_profile. How to check what is the last modification date of the the resources inside each profile.
View 6 Replies View RelatedToday I see my system tablespace is 98%, 480 MB used. Why the system tablespace is so big?
View 5 Replies View RelatedI 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
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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