Server Administration :: Too Many Archive Log Generation?
Mar 16, 2012
on weekends we have too many archive logs generated .i have taken the data of a week and found that average archive log generated from monday to friday is 7 files per day but on satuarday and sunday the average is 60 files and FG1 gets full. on weekends we have all type of backups running like incremental,archival and logical backups and on sunday we have full physical backup
what is the reason of too many archive log files generations at weekends. is it due to hot and logical backups , if yes then how ?
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Oct 21, 2011
i am using oracle 10g on solaris 10 os.currently archived log is generated by size wise 52 mb.i want to know whar is the best practice for archive log generation . it should be time interval or size wise.
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Jul 26, 2010
I have oracle 9i running on HP-UX, I would like to find how much redo we are generating in a given period of time, is there any script that I can use to get this information?
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Jun 22, 2009
I am trying to move my archive from linux to window as the log switch occur.... for this i mount my directory of window in linux .. but it doesn't moving... dest 1 on linux and dest 2 for windows...
In alert log the permission denied appears... the mounted directory in linux of windows is owned by root ... and is not changing to oracle.
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Aug 20, 2010
redo generation. As I found the below statement in another forum."Undo segment generates the redo data also, because undo segment is database changes, so it generates the redo data also."
How a Undo segment can generate Redo and Undo datas.
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Jan 7, 2013
Redo is getting generated very high. how to find out the reason ? database kept under 2 node cluster. chcked alert log trace and log writer trace files. pasted the content as below:
--alert log trace from node1 ( node2 also has same type of message ). Archive destination disk group - TXCOM_BACKUP_01 having enough space ( 80gb )
Mon Jan 7 00:49:10 2013
Thread 1 advanced to log sequence 448546 (LGWR switch)
Current log# 1 seq# 448546 mem# 0: +TXCOM_DATA_01/txcom/onlinelog/group_1.274.785770579
Current log# 1 seq# 448546 mem# 1: +TXCOM_DATA_01/txcom/onlinelog/group_1.302.802265189
Mon Jan 7 00:49:10 2013
[code]...
In the alert log, I am able to see the archive destination disk group ( TXCOM_BACKUP_01 ) is getting DISMOUNTED and again getting MOUNTED during every archive file generation. .
Mon Jan 7 00:49:20 2013
SUCCESS: diskgroup TXCOM_BACKUP_01 was mounted
SUCCESS: diskgroup TXCOM_BACKUP_01 was dismounted
SUCCESS: diskgroup TXCOM_BACKUP_01 was mounted
SUCCESS: diskgroup TXCOM_BACKUP_01 was dismounted
archive destination parameter in both nodes are not configured. it should read diskgroup name. ( +TXCOM_BACKUP_01 ) and corresponding size limit. Should i configure this ?
SQL> show parameter db_recovery
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string
db_recovery_file_dest_size big integer 0
[code]...
should i bring the database to mount stage and set log_archive_max_proesses to high count ? now value is 2 ( default )
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Sep 14, 2010
We had our production database hosted on Oracle 9.2.0. Few months back we have migrated it to Oracle 10.2.0.4.0. After Migration I have noticed that redo generation has become very very high. In earlier case no. of log files generating in production hours were around 30 where as after migration it become around 200 files per day. I have run statspack report on this database. Report is saying that db block change & disk write is become very high. Parameter timed_statistics has also been set to FALSE. Even then there is not any reduction on no. of log file generation. I had used import export for upgrading the databases.
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May 7, 2010
We are facing one issue on one of the database. The database is generating large trace files(14000) from last two days. That consumes around 15G space on the disk. And the content of the trace files is not having any meaningful message to debug:
cat /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc
*** TRACE DUMP CONTINUES IN FILE /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc ***
Dump file /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc
*** TRACE DUMP CONTINUED FROM FILE /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc ***
... (Many lines with above message)
The alert log is having one repeated error yesterday:
Thu May 6 22:00:03 2010
Errors in file /apps/oracle/admin/fs90uat/bdump/fs90uat_j000_11811.trc:
ORA-12012: error on auto execute of job 2647927
ORA-04063: ORA-04063: package body "ORACLE_OCM.MGMT_DB_LL_METRICS" has errors
ORA-06508: PL/SQL: could not find program unit being called: "ORACLE_OCM.MGMT_DB_LL_METRICS"
ORA-06512: at line 1
The corresponding trace file is having error:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /apps/oracle/product/10.2.0/db_1
System name: SunOS
Node name: corpqadb30
[Code] .......
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Mar 6, 2012
I have a small question to be clarified. Is there any way to find out the "Applied Archive log files" in DR and "Deleting them through .
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Mar 1, 2012
Our database was generating archivelog(50MB) every 30seconds! I think this is not normal because what I did is open our database, I was the only one who is connected, I'm not running anything, but our database is still generating archivelogs!
Our redo logs: 6groups 3members.
This are the things I saw on our alert logs:
- advanced to log sequence
- cannot allocate new log, sequence
- checkpoint not complete
- private strand flush not complete
What I did is change the log mode of our database to noarchivelog then open the database, then returned it to archivelog mode then that fixed the problem. But the thing is after 6hours its abnormal behavior goes back again.
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Dec 28, 2011
what is the techniques to set the archive mode in oracle database on???????
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Jan 10, 2011
I want to know how many archive log generating in One hour at the peak time. We have 6 nodes RAC multiplex 2.
Is there are any query through which I can achieve the above purpose.
Note: As this is a prod instance client is not happy to implement Log Miner utility.
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Jul 6, 2011
Just to validate from you experts if in case I change the destination file of my archive logs, does it require a restart of the database?
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Aug 23, 2011
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.
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Mar 26, 2010
We had a database (DB A)that is having version 9.2.0.6.0.This DB is having multiple tables and volume of 6 million in individual tables.Another database is also 9.2.0.6.0 (DB B), this DB has Mviews pointing to DB A. Mviews are refreshed in every 15 mins, with fast refresh option in 90% cases and remaining having complete refresh.
Last weekend we have migrated DB 2 to version 10.2.0.4.0 - 64bi and on another server.After version upgrade and DB migration complete refresh was done once for all mviews.
Now DB A is generating huge amount of archive log and also it's UNDO space is getting fully consumed causing performance issue and DB hang.what has gone wrong and what we can do to improve response of DB A and also to reduce size of Archive log ?
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Oct 31, 2011
I want to drop a datafile in my test db which is in no archive mode,at first, i want to offline the datafile,but it failed,is there any way to do it?
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 3237
[code].......
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Aug 5, 2010
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).
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Apr 13, 2011
we are getting below error:
ora-00257 archiver error. connect internal only until freed
when we tried to remove the unwanted arc files thro ASMCMD,we are getting below error:
ASMCMD> rm -ef 2011_04_05/
Unknown option: e
usage: rm [-rf] <name1 name2 . . .>
ASMCMD> rm -rf 2011_04_05/
ORA-15032: not all alterations performed
ORA-15028: ASM file '+XCOM_BACKUP_DG/TXCOM/ARCHIVELOG/2011_04_05/thread_2_seq_27215.1143.747641143' not dropped; currently being accessed (DBD ERROR: OCIStmtExecute)
ORA-15032: not all alterations performed
ORA-15028: ASM file '+XCOM_BACKUP_DG/TXCOM/ARCHIVELOG/2011_04_05/thread_3_seq_21762.826.747641143' not dropped; currently being accessed (DBD ERROR: OCIStmtExecute)
ORA-15032: not all alterations performed
ORA-15177: cannot operate on system aliases (DBD ERROR: OCIStmtExecute)
further we checked FRA size:
SQL> select * from v$flash_recovery_area_usage;
FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES
------------ ------------------ ------------------------- ---------------
CONTROLFILE 0 0 0
ONLINELOG 0 0 0
ARCHIVELOG 3.19 0 38
BACKUPPIECE 0 0 0
IMAGECOPY 0 0 0
FLASHBACKLOG 0 0 0
and checked any arc processing holding lock on arc files:
> ps -ef | grep -i ora_arc*
oracle 6989 1 0 15:07 ? 00:00:00 ora_arc0_TXCOM1
oracle 6991 1 0 15:07 ? 00:00:00 ora_arc1_TXCOM1
oracle 12246 12164 0 15:17 pts/4 00:00:00 grep -i ora_arc*
oracle 13452 1 0 Mar23 ? 00:01:07 ora_arc0_TWEBAPPS1
oracle 13454 1 0 Mar23 ? 00:00:30 ora_arc1_TWEBAPPS1
oracle 15402 1 0 Mar23 ? 00:00:50 ora_arc0_SXCOM1
[Code] ........
but we were not able to remove those .arc files from that folder. finally we have down all the instances and deleted those files manually.
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Dec 16, 2010
I'm facing problem with archive log file size, Archive logs are generated with only of 90m or 92m or 94m(Variable sizes of less than 100m), Although i had set 100m for each of my redo log file. Here i'm providing my create db script for your reference. I want to know why the log switches before it reaches 100m.Is there any connection of intial 10m for my .dbf files.
create database mydev
maxlogmembers 3
maxloghistory 100
maxdatafiles 50
maxinstances 1
logfile
[Code]....
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Mar 28, 2012
We are facing a different issue in our database. From yesterday night, the archive log generated with 5 digit. But it supposed to be 6 digit. Hence we are not able to apply the logs in DR Location.
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Apr 2, 2012
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?
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Jan 18, 2012
I have a question on export dump file generation.
select sum(bytes)/(1024*1024*1024) "GB" from dba_segments where owner='JACK';
The above select query give the output of Schema size with 15 GB. When i perform the same schema export, the dump file size generating is 2 GB. What is the difference between the two scenarios as how come there could be a variation in file size?
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Jul 23, 2010
I am trying to generate dynamic control file, as the files I want to upload are coming from different source and their name is constantly changing but following a fix pattern and naming convention.
I am able to generate dynamic control file through SQL. But while calling from BATCH file, i am unable to sent the file name as parameter.
All the examples i have searched are for UNIX, how to do it with BATCH File in WINDOWS.
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Sep 20, 2010
version: 10.2.0.4
OS: windows server 2003
I am not able to delete one month old archive log file manually on windows which doesn't having info about the standby on v$archived_log view of primary database. the sequence were already applied to the standby database. It shows the status as deleted in v$archived_log. while deleting the file manually. it showing an error like another program or person is using it.
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Sep 12, 2011
Developer is importing some large volumes of data. As the filesystem was filling up fast, I removed the all the archive log files. Will this affect the functioning of database? It is a development environment.
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Aug 21, 2012
I have a question.
When and Where HASH VALUE for a given SQL statement get generated?
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Jul 18, 2013
Here i've a case of, For single test there are multiple chemist's assigned to it. I want a result for each chemist assigned how many test.
I want the output like below.
CREATE TABLE SAM.TEMP
(
ID NUMBER(4),
CHEMIST_ID VARCHAR2(30)
)
/
[Code]....
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Feb 27, 2013
Need to generate auto number as below
A00001 to A99999. After A99999 it should begin with B00001 and ends with B99999. till Z99999 we need to generate.
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Jul 2, 2012
i need to write to word doc from pl/sql . these are letters which needs to printed . Can i use the same UTL_FILE and will i be able to control the font etc from pl/sql
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Jul 26, 2010
I am using following Procedure/function for inserting DATA into New table:
PROCEDURE NEMPID IS
OFFICER CHAR(1) := '0';
OFFICIAL CHAR(1) := '9';
CURSOR DOJSUP IS
[Code]....
Get/Retrieved data from personal and cat9 files and Inserted Data stored in file NEMP as
EMP_ID NEMP_ID
------- ---------
111 01-8722
132 01-9224
88 01-8318
114 01-8717
106 01-8517
[Code]....
I want also generate a sequence/serial number for same category/designation of personals/employees exist in personal file ?
Like 001, 002 ,003 at the end of NEMPID field.
EMP_ID NEMP_ID
------- ---------
111 01-8722-001
132 01-9224-002
88 01-8318-003
114 01-8717-004
[Code]....
HOW CAN GENERATE SEQUENCE/SERIAL NUMBER OF SAME CATEGORY EMPLOYEES AND INSERT INTO TABLE NEMP?
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