Properly Removing Old Temp Files From ASM Storage
Dec 16, 2010
The other day, we had a query run amok in our 2-node production cluster. The 3 temp files for the temp tablespace were all still set to autoextend unlimited, something I forgot to change after a recent upgrade. I created 3 new temp files and tried to delete the huge temp files. I did this from sqlplus with this commad:
ALTER TABLESPACE PSTEMP DROP TEMPFILE '+DATA/isis/tempfile/pstemp.291.641298061';
The huge files are still in ASM storage. dba_temp_files reports that the status of them is AVAILABLE but they have no RELATIVE_FNO. Grid Control reports their status as OFFLINE and their size as 0. They are actually close to 20 GB each.
I tested the above alter statement in two test instances, also RACed with ASM storage and the temp files were successfully deleted, but they were much smaller in size. At this point, how do I delete the three 20GB files from ASM in our production instance? Why didn't they delete the first time?
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Sep 19, 2011
As I was observing the space issues on my db server. I found that there is lots of Trm and Trc file which is being created very much frequently. Due to this its consuming lots of space even the size of each files is not more than 1Mb.
For cleaning I am deleting all the trm and trc files mannully using DEL command Os level. How can i schedule the purging of trm and trc files.
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Oct 11, 2012
I've just inadvertently altered the temp tablespace in a wrong database -
ALTER TABLESPACE TEMP ADD TEMPFILE 'temp_wrong_file.dbf'
SIZE 100M REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 1000M;
I need to drop just this wrong temp file and not the original and correct temp file for the database.
Is this correct :-
alter database tempfile 'temp_wrong_file.dbf' drop including datafiles;
Will this drop just the wrong temp file?
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Jun 5, 2013
I performed a switchover test of my Exadata databases last night. Both databases are running 11.2.0.2 (BP7) on top of GI of the same version.I'm using Data Guard Broker to administer the Data Guard configuration.
I have, as you'd expect, the standby_file_management set to AUTO, so any file changes/additions/deletions that are made on Primary should be applied to Standby also.And they have been. Until last night.
When I had switched over to running Primary on the Standby site, I got this error message:
Tue Jun 04 22:27:12 2013
Errors in file /u01/app/oracle/diag/rdbms/exdw1pdg/exdw1pdg1/trace/exdw1pdg1_ora_26630.trc:
ORA-25153: Temporary Tablespace is Empty
I checked and my two temp tablespaces existed, but had no files in them. These files are 200Gb and 448Gb in size, so you'd think you'd notice them going missing. This wasn't by any means the first time we switched over (and, yes, I did create temp files for Standby when I built it and first switched over)
We've switched over to Standby multiple times and even ran a whole day's processing against it and haven't seen this. Ultimately, it wasn't a big deal, because I just created a tempfile for each of the tablespaces and off we went.Nothing in MOS seems to mention something like this. Basically, it looks like the switchover process decided to eat my tempfiles but keep my temp tablespace defintion. Odd.
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Jan 16, 2013
the steps for moving the files between ASM diskgroups in 10g or 11g?
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Oct 24, 2012
in ASM disk group,
(under one directory)
ASMCMD> ls -lt
...(thousands of log files looks like, for example, log_19.26718.790635667),
how can I delete those files older than 10 days in one command line?
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Mar 5, 2013
what type of storage systems used for saving archive files and backup files "especially for oracle databases"
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Oct 29, 2013
About the concept of quorum failgroup ORACLE says:QUORUM disks, or disks in quorum failure groups, cannot contain any database files,the Oracle Cluster Registry (OCR), or dynamic volumes. However, QUORUM diskscan contain the voting file for Cluster Synchronization Services (CSS). Oracle ASMuses quorum disks or disks in quorum failure groups for voting files wheneverpossible.
To sum up, i think the different between a regular failgroup and a quorum failgroup is a quorum failgroup can only contain vote files and a regular one can contains multiple kinds of files.So i didn't see any advantage to place voting files on a quorum failgroup than on a regular one. Why Oracle introduce the concept of quorum failgroup?
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Jan 26, 2012
I have an oracle autoback of controlfile and spfile. I am trying to restore the production database using this backup, into a new server with a different directory structure.
I have completed the following steps in the restore process.
1. Creating a pfile from spfile
2. Changing the the location of cdump, udump, bdump and the control files ( there are three )
3. Then creating a spfile from this pfile
I am stuck on the next step where to rename all the datafiles and tempfile and restore the database. Following is what I did.
After mounting the database in RMAN, tried to run the following.
RMAN> run
2> {
3> allocate channel c1 device type disk
4> ;
5> @/home/oracle/rman_scripts/newloc.rman
6> SET NEWNAME FOR DATAFILE 1 TO '/u02/oradata/dorian/system01.dbf';
7> SET NEWNAME FOR DATAFILE 2 TO '/u02/oradata/dorian/undotbs01.dbf';
8> SET NEWNAME FOR DATAFILE 3 TO '/u02/oradata/dorian/sysaux01.dbf';
9> SET NEWNAME FOR DATAFILE 4 TO '/u02/oradata/dorian/users01.dbf';
[code]....
I am getting the following error message.
Starting restore at 25-JAN-2012 21:26:48
released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/25/2012 21:26:49
RMAN-06026: some targets not found - aborting restore
RMAN-06100: no channel to restore a backup or copy of datafile 30
RMAN-06100: no channel to restore a backup or copy of datafile 29
RMAN-06100: no channel to restore a backup or copy of datafile 28
[code]....
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Mar 29, 2011
I am working in a bank as an system consultant, i have a SAN Storage Area and oracle as below.
SAN 1
This interface includes the DATA FILES of the oracle tablespace
SAN 2
SAN1 Mirrors the DATA FILES of the oracle tablespace to SAN 2
1. Can i rely on real time data recovery from SAN2 ?
2. if SAN1 (Data Files are currupted) will the SAN2 Data Files will be currupted as well.
3. If the SAN2 is currupted then what Oracle Features can be used to have uncurrupted data.
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Jul 25, 2012
One of our customer have problem with following sql statement:
SELECT c.table_name, c.column_name
FROM user_tab_columns c, user_tables t
WHERE c.table_name = t.table_name
AND c.data_type IN ('CLOB', 'BLOB');
During execution it takes all the TEMP tablespace size(8GB).
I gather system stats (dbms_stats.gather_dictionary_stats(estimate_percent=>null)) but it doesn't resolve problem.Above sql statement works fine with RULE hint but I want to know what is the reason of problem with temporary tablespace.
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Mar 7, 2011
I am trying to run on Oracle report via Oracle Application Concurrent job. Concurrent job is completing normal but I don't get anything on print out page. In log file of this request I see message 'MSG-01003: Errors =>ORA-01652: unable to extend temp segment by 128 in tablespace TEMP'. I almost doubled the TEMP tablespace in size but still I am not able to get rid of this error message.
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Apr 19, 2010
The below query throws an error as mention below
My PGA_AGREGATOR_TARGET = 2GB
below query is given below.
RowsPlan
1SELECT STATEMENT
1 HASH JOIN
1 MERGE JOIN CARTESIAN
1 TABLE ACCESS BY INDEX ROWID WAT_SOURCE_DATA
BITMAP CONVERSION TO ROWIDS
BITMAP INDEX SINGLE VALUE INDX_WAT_SRC_DATA_BIT
[code]....
Error Message : ORA-01652:unable to extend temp segment by 128 in tablespace TEMP
Query :
SELECT OR004.wat_id "WAT_ID",
SYSDATE "DATE_FIRST_IDENTIFIED",
SYSDATE "DATE_LAST_IDENTIFIED",
'OR-004' "RULE_REFNO",
'RISK' "RULE_TYPE",
OR004.workspace_id "WORKSPACE_ID",
OR004.workspace_name "WORKSPACE_NAME",
[code]....
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Apr 6, 2009
this huge report that uses inline views. I keep getting the following error message when running the script through toad. I was thinking about using the USE_HASH hints. The sql optimizer we use is very buggy in Toad. I'm using oracle database version 10.2.0.3.
I can upload explain plan if needed.
SELECT 'Project Number^Project Start Date^Project End Date^Status^Project Manager^Task Number^'||
'Task Start Date^Task Completion Date^Task Manager^Award Number^Award Short Name^Project Organization^'||
'Task Organization^Expense Code^OMB Code^Revenue Line^Burden Rate^Burden Structure^Site^Sponsor^Type^Customer^'||
'Award Type^Award Purpose^Federal Flow Thru Code^IDC Schedule Name^Total Expenditure^Direct Charges^'||
'Indirect Charges^Cost Share Charges^Total Commitments^Direct Commitments^Indirect Commitments^Cost Share Commitments^'||
[Code]...
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Jul 16, 2013
I have a TEMP tablespace with autoextend on next 10M and maxsize 5120M, now my tablespace is 99.98% full. Am getting ORA-1652: unable to extend temp segment by 128 in tablespace temp error, can i use the method to increase the maxsize value to 10240M.
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Mar 1, 2013
My organisation is currently discussing different storage options for the database storage. Our production database is nearly 2TB and we do not want to continue with the existing NetApp storage (we use a 2 node RAC running 11.2.02 with nfs filesystem from NetApp filer).
We were looking at different options and came across Nimble Storage, they are very fast growing company aiming mid-range storage customers. The initial talks and demonstration looked very promising in terms of IO performance (they claim 40,000 - 60,000 IOPs for their CS400 series Nimble Storage array) and other options they are providing but we understand that majority of their customers are using it for VDI and other infrastructures.
They have demonstrated us using if for Oracle database with ASM storage over iSCSI LUNs. We are yet to do the POCs and benchmarking.
Has anyone come across Nimble Storage for running Oracle databases?
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Jul 31, 2008
I have written make files that compile .pc files in unix. This was for several projects that use an oralib source code directory.Just running proc on one target .pc file works fine on unix. I am trying to use proc - Oracle 10.2.0 - in windows and I keep getting:
Quote:unable to open include file
#include <stdio.h>
and other C library headers.
I am doing all development under cygwin, this way I can write a makefile just like under unix instead of using nmake.All C library headers are in /usr/include When I run proc on Solaris as that:
proc program.pc
No problems, and I do get program.c.
However in windows I get the previous error message. I have tried to do proc include=/user/include program.pc and proc include=/user/include parse=full program.pc but I still get the same error message.
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Oct 11, 2012
How can I know if database files are on file system or raw files?
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Jun 20, 2012
I want to compare two dump files and their respective log files, to see the difference. Is there any way.
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Sep 19, 2013
db and dev 10g rel2 ,suppose that i have a table with a lot of duplicate rows ,what i need is to delete the duplicates and retain one row of these duplicates . likecolumn -- with those values...how to delete two (hi's) and retain the third , ?it is all applied to all the duplicate values in the column.
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Jul 3, 2008
Trying to delete duplicate rows from a table. The problem is, they aren't exactly duplicate rows. Let me explain.
I am migrating data from a Oracle 8.1.7 db to a 10.2.1 db. In the older db, this certain table does not have a PK/Unique Index, but in the new db there is a unique index. The fields that the index is unique on are:
SUBSCR_NO, SUBSCR_NO_RESETS, EXTERNAL_ID, EXTERNAL_ID_TYPE, ACTIVE_DATE.
In the old db, when I run this query I get 1229 rows. With a count of 2 each.
select SUBSCR_NO, SUBSCR_NO_RESETS, EXTERNAL_ID, EXTERNAL_ID_TYPE, ACTIVE_DATE, count(*)
from customer_id_equip_map
group by SUBSCR_NO, SUBSCR_NO_RESETS, EXTERNAL_ID, EXTERNAL_ID_TYPE, ACTIVE_DATE
having count(*)>1;
They are duplicates on those fields, but they are not totally duplicate rows because there is a field called is_current that has 0 in one row and has 1 in the other. What I need to do, is delete the 1229 rows with is_current=0.
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Aug 5, 2012
To remove fragmentation which is the best method.
First one :
-----------------
1)Created a backup table from the Fragmented table (This table is a partitioned one).
2)Analyzed this table.
3)DROP the Fragmented table
4)Inserted the backuped up data from backup table to the Re-created table.
5)Analyze this table.
Second method
-------------------
1) Create a backup table newly, with PCTFREE =0
2) Inserted the data from Fragmented table ( This is a partitioned table) to backup table
3) Analyzed this table.
4) Truncate Fragmented table
4) Did Exchange partition of Fragmented table with Backup table.
The second method is not found to be removing the Fragmentation. Before the fragmentation was 28% after Second method the fragmentation is still the same. While the first method the fragmentation reduced to 16%.
Query used to find Fragmentation.
select table_name,
round((blocks*8),2) "table size kb",
round((num_rows*avg_row_len/1024),2) "actual data in table kb",
round((blocks*8),2)- round((num_rows*avg_row_len/1024),2) "wasted space kb",
[code]...
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Sep 10, 2010
TYPE CashRecord IS RECORD(client_id VARCHAR2(100),
account_letter VARCHAR2(100),
cash_amount VARCHAR2(100),
cash_amount_ccy VARCHAR2(100) );
TYPE CashRecordTable IS TABLE OF CashRecord INDEX BY VARCHAR2(100); -- Indexed by client_id~account_letter~ccy
So if I did something like this;
l_cash_records CashRecordTable;
-- say for example that l_cash_rec/l_cash_rec2 has been defined..
l_cash_records('some index') := l_cash_rec;
l_cash_records('some index 2') := l_cash_rec2;
l_cash_records.COUNT would give me 2
How can I somehow remove 'some index 2' so that l_cash_records.COUNT is 1 ?
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Jan 26, 2012
This is a simple question, but I cannot seem to find a solution. Here's the basic query:
select distinct accountno, parcelno, streetno||' '|| predirection ||' '|| streetname||' '|| streettype||' '|| postdirection||' '|| unitname||', '|| propertycity
from tblacctpropertyaddress ....
What I want to do is add is this logic: If Predirection is null, then no space between streetno & streetname. Same for postdirection and unitname. (for example, if both postdirection and unitname are null, there are no spaces between streettype and the comma before propertycity)
Also, when unitname is not null, I want to add the string "Unit " prior to the returned value in unitname.
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Dec 10, 2012
One of my clients need to remove three(of four) CPU to comply the licensing agreement with Oracle.
To avoid problems and also to list the possible problems that removing the CPU can bring, I wish to make a survey of the possible impacts, especially in performance, that removal can cause.
How can I get this information?
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Dec 27, 2006
I am working with Oracle 10G, and have been working on setting up little pl/sql checks to make sure that the data that is imported is in the correct format.
The wall I have hit is removing illegal characters from the data I import. I have started to set something up where the string for a certain column must be be made of only there characters:
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-" (note that there is a - besides just letters) and I may want to add some other characters later. So basically the script will drop or replace any character not found in my definitions with "", thus removing the illegal character and joining the previous and next characters.
I thought for sure there would be a script posted somewhere online that did this but I can't find it and my syntax skills are lacking.
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Jul 18, 2013
I have requirement to suppress the duplicate nodes on same level in hierarchy query.
Below given is the script for it.
CREATE TABLE NODE_LVL (PARENT_NODE VARCHAR2(100), CHILD_NODE VARCHAR2(100));
INSERT INTO NODE_LVL VALUES('TBL_APL','TBL_AFL');
INSERT INTO NODE_LVL VALUES('TBL_APP','TBL_ACS');
INSERT INTO NODE_LVL VALUES('TBL_ADD','TBL_ADW');
INSERT INTO NODE_LVL VALUES('TBL_ADP','TBL_ADV');
INSERT INTO NODE_LVL VALUES('TBL_AOP','TBL_AOV');
[code]......
Table 'TBL_APP' is having 2 parent nodes i.e 'TBL_AOV' and 'TBL_ADV'
SELECT * FROM node_lvl WHERE child_node = 'TBL_APP';
At level 5 there is duplicate nodes i.e 'TBL_APP' and 'TBL_ACS' as parent_node and child_node respectively.
SELECT PARENT_NODE, CHILD_NODE, LEVEL FROM NODE_LVL START WITH PARENT_NODE = 'TBL_ACF' CONNECT BY PRIOR CHILD_NODE = PARENT_NODE;
I want to suppress such duplicates. So I added DISTINCT
SELECT DISTINCT PARENT_NODE, CHILD_NODE, LEVEL FROM NODE_LVL START WITH PARENT_NODE = 'TBL_ACF' CONNECT BY PRIOR CHILD_NODE = PARENT_NODE;
BUT requirement is to maintain the same order (of hierarchy) as it was before adding DISTINCT.
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May 3, 2012
I've a table in data warehouse production with data which is partitioned by RANGE, sub-partitioned by HASH.Later we realized that subpartitioned are not needed as volume is less.
I tried below approah in DEV DB:
1. create table ABC_BAK as select * from ABC;
2. dbms_metadata.get_ddl('TABLE','ABC')
3. Removed the subpartitions details from the output of step 2 and prepared the script of create table without subpartitions
4. Drop table ABC
5. Create table ABC from script step 3.
6. Insert into ABC select * from ABC_BAK
7. Drop table ABC_BAK
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Dec 13, 2008
I am persisting xml with below mention tag which contains preformatted text data.
<SECTION>
<HDG><![CDATABusiness Summary]></HDG>
<BODY>
<![CDATA[(C) 2008 D&B
COPYRIGHT 2008 DUN & BRADSTREET INC. - PROVIDED UNDER CONTRACT
FOR THE EXCLUSIVE USE OF SUBSCRIBER 263763803.
ATTN: null
[code]....
Now, when i retrieve this xml from oracle CLOB column, i am getting data in body tag as below:
(C) 2008 D&B COPYRIGHT 2008 DUN & BRADSTREET INC. - PROVIDED UNDER CONTRACT FOR THE EXCLUSIVE USE OF SUBSCRIBER 263763803. ATTN: null US TEST COMPANY 984 DUNS: 36-252-8379 RATING DS US FICTITIOUS COMPANY 984 BUSINESS SERVICES EMPLOYS UNDETERMINED 899 EATON AVE SIC NO. BETHLEHEM PA 18025 7389 TEL: 610 882-0005 RICHARD DOE, MANAGER RECORD TYPE: DUNS SUPPORT THE "DS" INDICATOR ASSIGNED TO THIS BUSINESS MEANS THAT THE LIMITED INFORMATION CURRENTLY IN THE D&B FILE DOES NOT ALLOW US TO CLASSIFY IT WITHIN OUR RATING SYSTEM. WE ARE PROVIDING THIS INFORMATION TO YOU IN THE INTEREST OF SPEED WITHOUT HAVING COMPLETED AN INVESTIGATION. THEREFORE, THIS REPORT MAY NOT REFLECT THE CURRENT STATUS OF THIS BUSINESS. D&B CAN INVESTIGATE THIS BUSINESS AND UPDATE THIS INFORMATION BASED ON THE RESULTS OF THAT INVESTIGATION.
All text formatting goes for a toss (newline, trailing tab characters are getting trimmed).provide any inputs on how to avoid this. Text formatting needs to be preserved.
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May 31, 2012
I am trying to remove duplicates from a table with over 10million records. Below query is working fine but it doesnt contain any COMMIT interval. I have to commit after every 20k or 30k records deletion for which IF loop is necessary.
Query:
delete from
customer
where rowid in
(select rowid from
(select
rowid,
row_number()
over
(partition by custnbr order by custnbr) dup
from customer)
where dup > 1);
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