Server Administration :: Archive Log Every 30 Seconds?
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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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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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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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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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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Nov 9, 2011
I have a date column in a table, I need to fetch records from 27:11:11 00:00:10 to 30:11:11 00:00:10 (DD:MM:YY HH:MI:SS). i.e between seconds/min/hrs.
expecting Something like this,
SELECT * FROM TABLENAME WHERE MODEDATE BETWEEN
TO_CHAR('27/11/11 00:00:10','DD-MN-YY HH24:MI:SS') AND
TO_CHAR('30/11/11 01:10:10','DD-MN-YY HH24:MI:SS')
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Feb 11, 2011
What is the exact usage of the SUBSECONDS in Timestamp data type.
Especially it has range upto 9 decimal places?
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Oct 23, 2012
I have a date field which is passed as in parameter defaulted to sydate With the passed date as input I need to run an eod for every 15 mins by calculating
v_sdate := TRUNC ( in_sdate
- (MOD (TO_CHAR (in_sdate, 'MI'), 15) * 60)
/ (24 * 60 * 60),
'MI'
);
v_edate := TRUNC (in_sdate, 'MI');
Using the above v_sdate and v_edate I am calculating the start date and end date and compare these in my final select query.Now in case of rerun of old date, I am calculating start date as : v_sdate := TRUNC (in_sdate, 'MI') - 15 / 1440;
But in the above calculation, I am not considering seconds, but I need to consider those also, because say I ran the eod at 23-oct-2012 12:23:13 then my start date in case of re run should start from 12:23:14 secs , how can I achieve that?
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Oct 23, 2013
SQL> SELECT MAX (upd_time), MIN (upd_time), COUNT (serial)
FROM (SELECT * FROM trans
UNION ALL
SELECT * FROM trans_archive);
MAX(UPD_T MIN(UPD_T COUNT(SERIAL)
--------- --------- -------------
23-OCT-13 01-JAN-11 5289261
I need to calculate seconds between MAX (upd_time) and MIN (upd_time) and then calculate trans/sec. Number of trans COUNT (serial).
SQL> desc trans;
Name Null? Type
----------------------------------------- -------- ----------------------------
SERIAL NOT NULL NUMBER(11)
UPD_TIME NOT NULL DATE
MESSAGE NOT NULL VARCHAR2(255 CHAR)
ENTITY_TABLE NOT NULL VARCHAR2(32 CHAR)
ACTION NOT NULL VARCHAR2(12 CHAR)
[code]....
trans_archive the same DDL.
my first try to get intervall between max and min date in secons:
SQL> SELECT EXTRACT (DAY FROM (MAX (UPD_TIME) - MIN (UPD_TIME))) * 24 * 60 * 60
+ EXTRACT (HOUR FROM (MAX (UPD_TIME) - MIN (UPD_TIME))) * 60 * 60
+ EXTRACT (MINUTE FROM (MAX (UPD_TIME) - MIN (UPD_TIME))) * 60
+ EXTRACT (SECOND FROM (MAX (UPD_TIME) - MIN (UPD_TIME)))
DELTA
FROM (SELECT * FROM TRANS
UNION ALL
SELECT * FROM TRANS_ARCHIVE);
SELECT EXTRACT (DAY FROM (MAX (UPD_TIME) - MIN (UPD_TIME))) * 24 * 60 * 60
*
ERROR at line 1:
ORA-30076: invalid extract field for extract source
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Feb 13, 2012
I ran this query :
SELECT el.date_time_stamp AS occurance_time,
esl.ack_time_stamp AS response_time,
esl.res_time_stamp AS resolved_time,
NVL ( (esl.ack_time_stamp - el.date_time_stamp), 0)
AS time_taken_to_acknowledge,
NVL ( (esl.res_time_stamp - el.date_time_stamp),0 )
[code].....
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Jan 2, 2013
I have to create the following table. The fields Trend_Date, Price and Trend are already given. I have to calculate the field permanently and to insert the value in this permanent table.
Fields:
The field price belong to the value of a product during the trade.
The field trade_date belongs to the moment of the trade.
The field trend belongs to the future behavior of the the price. Here, the price of the present moment is compared to the following price (possible characteristics: 'UP', 'DOWN', 'STABLE').
The field permanently belongs to the time (in seconds) how long the value of the field Trend_Date (depending on the price) is still true.
For example:
Row 1: The trend in row 1 is 'UP' and it has a price of '11'. Until row 3 this remains true (the price is greater or equal to 11). In this case, the difference between row 1 and row 3 are 9801 (rounded) seconds.
Row 2: The trend in row 2 is 'DOWN' and it has a price of '12'. This remains true till to the end (the price is never greater than 12) In this case, the difference between row 2 and row 11 are 97346 (rounded) seconds. To calculate the 97346 seconds the field has to consider that between row 2 and row 11 are two days. There will be no trade between 18:00 and 07:00 o'clock. This belongs to 7 hours for each days, in seconds (2*46800) 93600.
-> 190945-93600 = 97346s
Row 6: The trend in row 6 is 'UP' and it has a price of '5'. This remains true till to the end (the price is never smaller than 5) In this case, the difference between row 6 and row 11 are 65729 (rounded) seconds. To calculate the 65729 seconds the field has to consider that between row 65729 and row 11 are one days. There will be no trade between 18:00 and 07:00 o'clock. This belongs to 7 hours for each days, in seconds (1*46800) 46800.
-> 112528-46800 = 65729s
Row 9: The trend in row 9 is 'STABLE' and it has a price of '8'. Until row 10 this remains true (the price is equal to 8 ). In this case, the difference between row 9 and row 10 is 14418 (rounded) seconds.
Row 11: Is empty because there are no values to compare.
Example Table
TRADE_DATE --PRICE --TREND --permanently
02.01.13 11:21:42,720000000--11--UP--9801
02.01.13 12:44:03,236000000--12--DOWN--97346
02.01.13 14:05:03,845000000--11--DOWN--92485
[Code]....
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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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Nov 5, 2010
I am able to run this query in Sql Prompt.
DEFINE Today = TO_DATE('03.12.2004:10:34:24','DD.MM.YYYY:HH24:MI:SS')
SELECT TO_CHAR(hiredate,'DD.MM.YYYY:HH24:MI:SS') "Hiredate",
TO_CHAR(&Today,'DD.MM.YYYY:HH24:MI:SS') "Today",
trunc(86400*(&Today-hiredate))-60*(trunc((86400*(&&Today-hiredate))/60)) "Sec",
[Code]...
It gives proper / desired results. I want to use it on my Form, how can it be done?
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Oct 8, 2012
select to_char(SYSDATE,'MMDDYYYYHHMISS') from dual;
Ouput:
10082012010338
It is giving me correct output, but i want to display even the Fraction of seconds, how can i?
I have tried this..but not working..
select to_char(SYSDATE,'MMDDYYYYHHMISSFF') from dual;
Output: Error.
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Apr 11, 2013
I'm using Apex 4.2.1 against Oracle 11gR2 and mod_plsql.create a date picker item that allows users to select seconds as well as hours and minutes.
I have searched this Forum and see that others have asked this question. The answers have all been "No". However, I've seen no such question since version 4.1 has been released, and so, am hoping there now is a way to do this.
I have adjusted the Date Format field to be "DD-Mon-YYYY HH24:MI:SS", both under the date picker item itself as well as under the "Global" parameters section of my application. All to no avail. The date picker shows only hours and minutes for the time portion.
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Oct 18, 2012
I have two varchar variable which has value like this
v_outpunch1:='17:50:00'
and v_Shifttime:='18:00:00'
this both time i am subtracting here and storing in another varchar variable which is like this.
v_EarlyLeaverstimeformat := LPAD((extract(hour from TO_TIMESTAMP (v_ShiftTime,'HH24:mi:ss')) - extract(hour from TO_TIMESTAMP (v_OutPunch1,'HH24:mi:ss'))), 2, '0')||':'|| LPAD((extract(minute from TO_TIMESTAMP (v_ShiftTime,'HH24:mi:ss')) - extract(minute from TO_TIMESTAMP (v_OutPunch1,'HH24:mi:ss'))), 2, '0')||':'|| LPAD((extract(second from TO_TIMESTAMP (v_ShiftTime,'HH24:mi:ss')) - extract(second from TO_TIMESTAMP (v_OutPunch1,'HH24:mi:ss'))), 2, '0');
it's not subtracting value correctly.
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May 7, 2013
I have written a stand alone (Java SE 1.6) JMS client program to consume AQ's messages via Oracle JMS API (aqapi.jar). The queue is a multiple consumer queue, and i just created one subscriber on it. My JMS client program receives messages asynchronously by setting the MessageListener using the setMessageListener method.
Watching the work of the program, I found significant delays in receiving messages that are up to several seconds. When I turned on the diagnostic trace, I found that in the absence of messages listener (AQjmsSimpleScheduler) gradually increases the delay time up to 15 seconds:
Thread-1 [Mon May 06 22:14:23 MSK 2013] AQjmsSimpleScheduler.feedData: Got a non null message, the sleep time is reset to 0
Thread-1 [Mon May 06 22:14:23 MSK 2013] AQjmsListenerWorker.run: sleep 0 millisecond.
Thread-1 [Mon May 06 22:14:23 MSK 2013] AQjmsSimpleScheduler.feedData: Got a null message, the sleep time is doubled to 1000
Thread-1 [Mon May 06 22:14:23 MSK 2013] AQjmsListenerWorker.run: sleep 1000 millisecond.
Thread-1 [Mon May 06 22:14:23 MSK 2013] AQjmsListenerWorker.doSleep: try to wait for 1000 milliseconds
[code]....
Thus, in the worst case, the delay between placing the message in the queue and receiving it by the JMS client is 15 seconds.
Can I control this latency? For example, I would like to explicitly set the levels of the time delays.
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Aug 29, 2008
I have a multimaster advance replication environment and we have less than 10 transaction per day...I want to propagate data as soon as possible like sync if I setup the schedule push to propagate transaction every 5 seconds as below
BEGIN
DBMS_DEFER_SYS.SCHEDULE_PUSH(
destination => 'orc2',
interval => 'SYSDATE + (5/60*60*24)',
next_date => SYSDATE,
parallelism => 1,
delay_seconds => 10);
END;
/
in other hand ,book(I mean Advance Replication) has written that for simulating continuous push we should setup it as below so it will propagate transaction every 1 minute.
My second question is:I know interval >= 'SYSDATE + (1/144)' means every 10 minutes a job will start and delay_seconds => 1200 means each job remain aware for 20 minutes, but I can't understand the logic?why it can simulate 1 minute propagation?
BEGIN
DBMS_DEFER_SYS.SCHEDULE_PUSH(
destination => 'orc2',
interval => 'SYSDATE + (1/144)',
next_date => SYSDATE,
parallelism => 1,
execution_second >= 1500,
delay_seconds => 1200);
END;
My thrid question is :Which of the above setups is a better solution for my environment?
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Nov 29, 2010
i'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.
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