How to delete flashback log and to release the space?
I guess that it maybe like archive log ,it can release the space using RMAN.But when i try a test ,it fail.
SQL> STARTUP MOUNT;
SQL> ALTER DATABASE FLASHBACK OFF;
I have a problem...
I created a tablespace called my_ts:
CODECREATE TABLESPACE my_ts DATAFILE 'C:\Oracle\oradata\db\my_ts.dbf' SIZE 5M EXTENT MANAGEMENT LOCAL UNIFORM SIZE 128K;
ALTER DATABASE DATAFILE 'C:\Oracle\oradata\db\my_ts.dbf' AUTOEXTEND ON;
Its was sucessfully created and my_ts.dbf file has 5MB
charging with data...
CODEcreate table big_table tablespace my_ts as select * from dba_objects;
select * from big_table;
begin
for i in 1..10 loop
insert into big_table select * from dba_objects;
end loop;
end;
Now the my_ts.dbf file has 90MB
Now I want drop this table:
CODEdrop table big_table purge;
And my tablespace file still has 90MB.
I already tried to restart the database but doesn't works...
how can I reduce the size to the original (5MB)?
I need store history for two tables in my system. I thought that Flashback Data Archive will be the best option. There is also another ways to do this but don't focus on this. I need to to this by FDA (Flashback Data Archive);
So my prerequisite was to create tablespace and flash back archive, and alter table to be archived.
create tablespace audit_archive datafile 'd:oradata etaaudit_archive.ora' size 100M;
create flashback archive audit_flash_archive
tablespace audit_archive quota 10G retention 10 year;
alter table teta_admin.t_prac flashback archive audit_flash_archive;
and everything works fine but on sys user.
i can query this table using "as of timestamp" clause
select prac_id, imie, imie_2, nazwisko, nr_ew from teta_admin.t_prac as of timestamp to_timestamp('2011-08-23 08:20:00','yyyy-mm-dd hh24:mi:ss')
but final construction of idea was to create additional user (interface), grant select on teta_admin.t_prac object and query archive data from interface user. and this is point of my failure. this don't work on new user.
interface user have such sys privs:
SQL> SELECT * FROM dba_sys_privs
2 WHERE grantee = 'INTERFACE';
GRANTEE PRIVILEGE ADM
------------------------------ ---------------------------------------- ---
INTERFACE CREATE SESSION NO
and table privs:
SQL> SELECT * FROM dba_tab_privs
2 WHERE grantee = 'INTERFACE';
GRANTEE OWNER TABLE_NAME GRANTOR PRIVILEGE
------------------------------ ------------------------------ ------------------------------ ------------------------------ --------------------
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN INSERT
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN DELETE
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN ALTER
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN FLASHBACK
INTERFACE TETA_ADMIN T_PRAC TETA_ADMIN SELECT
what i need to do in order to query this flashback table from interface user. when i try to do this from this user oracle says ORA-00942.
here's my settings
SYS@boston>SELECT ESTIMATED_FLASHBACK_SIZE FROM V$FLASHBACK_DATABASE_LOG;
ESTIMATED_FLASHBACK_SIZE
------------------------
45195264
SYS@boston>select name, value, issys_modifiable from v$parameter where name='db
_recovery_file_dest_size';
NAME
--------------------------------------------------------------------------------
VALUE
--------------------------------------------------------------------------------
ISSYS_MOD
---------
db_recovery_file_dest_size
9663676416
IMMEDIATE
SYS@boston>select * from v$recovery_file_dest;
NAME
--------------------------------------------------------------------------------
SPACE_LIMIT SPACE_USED SPACE_RECLAIMABLE NUMBER_OF_FILES
----------- ---------- ----------------- ---------------
D:Ora102chicagooston_recover
9663676416 1671241216 1103842304 50
SYS@boston>select * from v$flash_recovery_area_usage;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE 0 0 0
ONLINELOG .04 0 1
ARCHIVELOG .16 .01 21
BACKUPPIECE 16.84 11.41 22
IMAGECOPY 0 0 0
FLASHBACKLOG .25 0 6
6 rows selected.
SYS@boston>
I have configured a flash recovery area of 9g yet the system keeps complaining that i have not enough flashback logs?
SPACE_RECLAIMABLE 1103842304
ESTIMATED_FLASHBACK_SIZE 45195264
the space_reclaimable is more than ESTIMATED_FLASHBACK_SIZE, so how is it possible the system always complain not enough space?
[URL].....
Quote:
SQL> SELECT TO_CHAR(STANDBY_BECAME_PRIMARY_SCN) FROM V$DATABASE;
it returns me 0, I try to flashback the now defunct former primary db chicago, the system complains. so how much is really enough?
from
[URL]......
Quote:
V$FLASHBACK_DATABASE_LOG
I have read it in books that flashback uses undo data to create the flashback data or to flashback the database to a time in the past.Then, what is the role of archive files in flashback operation. Why it is mandatory to turn on archiving before turning on flashback. Also, if you remove the latest archive files, you can NOT flashback the data to a time in past (Oracle complains of missing archive files).
View 8 Replies View RelatedFlashback table operations are not supported for the SYS user . I have found the above line in one of the article.
I don't know why the SYS user can not able to flash back the table.
how many users we can create in oracle 11g release 2 database. Is there any specific limit or parameter for that.
View 1 Replies View RelatedIn 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
Is there any way I can calculate percentage of space used in a block.Eg if a table size is 100 blocks,How Can I check the percentage of used space in block.
View 6 Replies View Relatedfor some reason,i want to know which data block contains free space,or which table/index contains free space.
View 6 Replies View Related am using Oracle 10.2.0.4 on win 2008 server SP2. I would like to know if we can set the Segment Space Management feature to AUTO for RBS and Temporary tablespaces. As the data is not permanent in these tablespaces, will it manage automatically?
Presently its Segment Space Mgmt is manual for System, RBS, Temporary tablespaces.
In my drive E: I'll have a space issue soon because one file is taking all space. SYSTEM01. DBF size is around 25GB. I want to know if I delete some data in my database I'll gain space.
View 2 Replies View RelatedIn one of our Data warehousing DB, even though, all the tablespaces' space should keep on at least 1 month, but our leader want us to estimate how much space can free up with db method.
I have referenced
<Administrator Guide> - Reclaiming Wasted Space
[URL].....
I have several questions on reclaim space:
1. It seems that segment adviser give a really cool view to know which segment should be shrink and how much size will free up after shrink. But actually, this need a very a job or manually do this. I have once heard about some query from can estimate this :
A script from MOS, but actually I found this it's not very accurate with segment adviser. This script should report the real space the table occupy, but after shrink space, the space doesn't free up.
SELECT TABLE_NAME , (BLOCKS *8192 / 1024/1024 ) - (NUM_ROWS*AVG_ROW_LEN/1024/1024)
"Data lower than HWM in MB" FROM DBA_TABLES WHERE UPPER(owner) =UPPER('&OWNER') order by 2 desc;
Also there is a script evaluate the tablespace fragments from some people:
SELECT tablespace_name,
SQRT (MAX (blocks) / SUM (blocks))
* (100 / SQRT (SQRT (COUNT (blocks))))
FSFI
FROM dba_free_space
GROUP BY tablespace_name
ORDER BY 1;
if the value is very low, we can coalesce the tablespace. But after I coalesce the tablespace, I can't see any space free up.
From <Concepts>:
Quote:Coalescing extents is not necessary in
locally managed tablespaces, because all contiguous free space is available for
allocation to a new extent regardless of whether it was reclaimed from one or more
extents.
2. is there any good way to estimate how much space we should free up? ( After free up the space , dba_free_space should see this result)
Application team requested hosting team to add some space to tablespace as it was exceeding 80% used.Now the hosting team have added the space as per recommendation and the application team wants us to verify if the space was added. How to check the space was added in GB to list of tablesapces ?
View 5 Replies View RelatedI just want to know whether we have to pre-allocate space for temporary tablespaces?
View 1 Replies View RelatedHow do we find the free space in tablespaces in a standby database
View 4 Replies View Relateda newbie dba here..
select TABLESPACE_NAME,
sum(BYTES) Total_free_space,
max(BYTES) largest_free_extent
from dba_free_space
group by TABLESPACE_NAME
/
result output is attached .txt file.
the SYSTEM & USERS table space shows only <10 mb free space. Is it a bad sign? What I should do ?
We have separate tablespaces for Tables and Indexes. Also Temp is in different temporary tablespace and UNDO also in UNDO tablespace and Index tablespace contains only Indexes. The tablespace usage for tables is 80% and Index is 91%.There is not enough disk space to allocate for the datafile on our system. I ran a rebuild on one of the Index but now notice the Index tablespace is 98% used soon after the rebuild finished.
How can i free up space for Index tablespace and why does the size of Index tablespace increased after the rebuild.
the syntax to make a tablespace's segment space mnagement auto which is segement management is *manual* and exent management is *local autoallocate*.
View 2 Replies View RelatedMistakenly I added lot of datafiles with autextend on option.. I realized later and then tried to resize the datafiles to a minumum space but got the below error
ORA-03214: File Size specified is smaller than minimum required.
How to resolve this problem to reclain the space back?
post some script which will find out the used space of a specific datafile.
View 5 Replies View RelatedI have one generic question about space management. I have one table with size of 1TB. This table stored in ORC1 tablespace. This tablespace contains 70 datafiles.
Since it's 10.2.0.4 database. I have dropped this table by using purge
drop table <<table_name>> purge;
Once table drop was completed. When I check the tablespace space it was 100% free but due to HWM was unable to resize the datafile from current size to small size. What was the reason behind this. Is there any process needs to follow when dropping big tables ? like instead of dropping the tables do I need to truncate first & then drop .
I do below alter command alter tablespace RCA_MB_IDX add datafile '/gxsdb/database oradata5/RCA/RCA_REF_MB_IDX_01.dbf ' size 1024M
But there is extra space in the file location '/gxsdb/database/oradata5 RCA/RCA_REF_MB_IDX_01.dbfX' I mark X for that space ...
The command is commit .
But there is problem when do backup ...as the file cannot be find since there is extra space after ".dbf" How can I fall back ?
I have one tablespace called U01. This tablepspace contains 31 data files. Due to high water mark I was unable to most datafiles. Since my database running onair application they will not provide me downtime to move the tables. Is there anyway to fix the high water mark without getting downtime window? almost 700+g space unused. I need to reuse them asap because running out of space with in asm diskgroup.
SQL> SELECT A.TABLESPACE_NAME,round(SUM(A.TOTS)/1024/1024) "Tot size MB",
2 round(SUM(A.SUMB)/1024/1024) "Tot Free MB",
3 round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%FREE",
100-round(SUM(A.SUMB)*100/SUM(A.TOTS)) "%USED",
round(SUM(A.LARGEST)/1024/1024) MAX_FREE,SUM(A.CHUNKS) CHUNKS_FREE
4 5 6 FROM (
7 SELECT TABLESPACE_NAME,0 TOTS,SUM(BYTES) SUMB,
[code]...
We are in the process of gaining some space in our database. We identified a tablespace that occupied around 400GB of space. The datas are required for us. Hence, we truncated (with drop storage) the tables, gathered statistics and shrinked the tables. After doing that we found the datafile occupied around 32GB of space. We tried to resize it to 5 GB and we got "ORA-03297: file contains used data beyond requested RESIZE value". We could see that size in dba_free_space against that tablespace. We would like to give back everything to OS.
We also tried exporting the tablespace without rows, dropped the tablespace and re-created and imported again. But the datafile grows to around 32G and we are unable to resize it.
We are sure that the tablespace has only the table definitions without data. But we do not know why is it occupying around 32G of space and we could see that size in dba_free_space. We would like to give back everything to OS. How can we do that?
select sum(bytes/1024/1024) from dba_segments where owner='IPPS';
Does the above finding means that IPPS has use up 'this amount' of space in the database from all his objects?
In normal days size of archives generated in a day is 14-15GB. But since yesterday morning, almost 150GB of archives have been generated and are still getting generated(200MB every 1-2 minutes).
There was a sudden reboot of server yesterday morning. At that time there was heavy load of transactions on database. Can it be a reason that smon is still doing recovery? (I am not sure on this). Also, Undo tablespace is increased from 18 GB to 50 GB since yesterday (autoextend on).
Now we are running out of space for archive file system (can't delete them also until they are transferred to DR) Size of redo log is 200MB. This database supports around 2500 users.
performance wise I don't see any hit. Also wait events are normal. (only few db file sequential read) finding the query/session which are causing this much huge amount of archives?
i have a tablespace with a datafile of 20g. now by mistake i delete the datafile and then try to delete the tablespace from EM but i got an error which says that data file is not present to delete
Now initially after deleting the file physically so then i check space by applying df -ah at os lvl so it didn't reclaim the space now i try to delete the tablespace from em so it gives me the above error. This might be due to tablespace existence. so how can i reclaim the space.
I have table which has 240 columns.
Here is the list of column data type.
VARCHAR2(50)
TIMESTAMP(6)
VARCHAR2(25)
VARCHAR2(25)
NUMBER(15,2)
VARCHAR2(50)
NUMBER(1)
[code]....
The table has 64 partition.. When i count the table(select count(*) from table), i see close to 22 million records.
SQL> select (num_rows*avg_row_len)/1024/1024/1024 GB,num_rows,avg_row_len
2 from dba_tables
3 where table_name='TRX_TAB';
GB NUM_ROWS AVG_ROW_LEN
---------- ---------- -----------
74.9393936 21871585 3679
SQL>
It is supposed to take 75 GB. But this table is consuming 135 GB now. It is occupying 8 GB per day.
essentially create data fragmentation within the datafile resulting in the db having lots more space to write into but not actually freeing space, even if you shrink the file it doesnt free space or do a reorg?
We have as an example a DB with 2 billion rows of data in 1 table, no partioning just one large table.
We have worked out that we can probably delete 1 billion rows or even better only keep a rolling 3 month window of data.
What would be the suggestion on deleting this data and reclaiming the disk space to actually see additional disk space made available at the os level.
deleting the data and reclaiming the space.
Through reading it looks like it might be something like, delete, creating new table space partitions from this data. This in theory would create new a tablespace in newly created data files which would result in the data being reorganised and taking up less physical space and when completed you point to the newly created partitions and drop the old tables.
