i have an error with block corruption
Error: Corrupt block relative dba: 0x01c12a58 (file 7, block 76376)
What all the ,methods I can go for if we are working on a production environment with out any down time.
I can go for dbms repair package and restore and recover
have a repeatable technique for damaging a datafile block?
I need to demonstrate and contrast various recovery techniques, such as dbms_repair, RMAN block recovery, and Data Guard automatic block repair.
I'll end up with a shell script (or batch file) where I can enter a file number and block number, and wipe out that block.
I'm using database 11g & restore backup from another location.
RMAN> RESTORE CONTROLFILE FROM '/u01/RMAN/forstandby_0acekubq_1_1';
RMAN> catalog start with '/u01/RMAN/';
RMAN> restore database;
channel ORA_DISK_1: reading from backup piece /u01/RMAN/forstandby_09ceku8r_1_1
channel ORA_DISK_1: ORA-19870: error while restoring backup piece /u01/RMAN/forstandby_09ceku8r_1_1
ORA-19599: block number 782 is corrupt in backup piece /u01/RMAN/forstandby_09ceku8r_1_1
failover to previous backup
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 10/23/2012 19:24:11
RMAN-06026: some targets not found - aborting restore
RMAN-06023: no backup or copy of datafile 4 found to restore
RMAN-06023: no backup or copy of datafile 3 found to restore
RMAN-06023: no backup or copy of datafile 2 found to restore
RMAN-06023: no backup or copy of datafile 1 found to restore
During the scheduled backup we observed that, backup got failed. Error is "ORA-01115: IO error reading block from file 11 (block # 118736)
".
unable to rectify it. Below are the part of log file -
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.MAIN [TABLE_DATA:"DW_REP"."DW_MOTOR_CLAIM_INFO_DTLS"]
ORA-24795: Illegal ROLLBACK attempt made
ORA-06512: at "SYS.KUPW$WORKER", line 8976
ORA-24795: Illegal ROLLBACK attempt made
[code]...
This is development server. Dont have RMAN configured.But when we connected to RMAN and issued block recovery, it started process and shows media recovery done. Since no RMAN backup was taken before, what it does here?
C:UsersAdministrator>RMAN
Recovery Manager: Release 11.2.0.1.0 - Production on Fri May 17 10:48:40 2013
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
RMAN> CONECT target /
connected to target database: MAGMADEV (DBID=2469200049)
[code]...
how to resolve this problem?
I couldn't take backup of the RAC database archivelog.
RMAN> BACKUP VALIDATE DATABASE ARCHIVELOG ALL;
Starting backup at 24-MAR-13
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=+DG1/kvxcprd/datafile/system.260.777756857
input datafile fno=00003 name=+DG1/kvxcprd/datafile/sysaux.268.777756857
input datafile fno=00002 name=+DG1/kvxcprd/datafile/undotbs1.263.777756857
input datafile fno=00005 name=+DG1/kvxcprd/datafile/undotbs2.264.777756983
input datafile fno=00004 name=+DG1/kvxcprd/datafile/users.267.777756857
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:25
channel ORA_DISK_1: starting archive log backupset
channel ORA_DISK_1: specifying archive log(s) in backup set
input archive log thread=2 sequence=17 recid=26 stamp=810915691
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 03/24/2013 14:37:11
ORA-19599: block number 1985 is corrupt in archived log +FG/kvxcprd/archivelog/2013_03_24/thread_2_seq_17.269.810915689
RMAN> backup archivelog all;
Starting backup at 24-MAR-13
current log archived
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 03/24/2013 14:39:52
ORA-19563: header validation failed for file
does, block change tracking file is read during incremental level 0 backup?
View 4 Replies View Relatedi did such commands
1. RMAN -> backup incremental level 0 database;
2. SQLPLUS -> alter database enable block change tracking using file '/home/oracle/block_change_tracking.tr';
3. RMAN -> backup incremental level 1 cumulative database;
4. RMAN -> backup incremental level 1 cumulative database;
5. RMAN -> backup incremental level 1 cumulative database;
and for such order i noticed that block change tracking file wasn't used for any cumulative backup. for each cumulative backup was done full scan over database.
it was used after i did incremental level 0 backup, and again incremental 1 cumulative.
if i want this feature to be usefull i should enable it before my incremental level 0, or i should do incremental level 0 immediately after i enable it?
I am facing some problems in recovery on oracle 9.2.0.1.0 Standard Edition.
Quote:
ORA-00283: recovery session canceled due to errors
ORA-00368: checksum error in redo log block
ORA-00353: log corruption near block 43200 change 1021681146 time 10/11/2012 18:25:25
ORA-00334: archived log: '/oradb/odb/archivedata/ARCH0000002343.ARC'
I've recently moved jobs and am doing a lot of the normal things getting familiar with my new company's databases.I was checking through our production backup logs and came across something that looks a little funny. From the last two days backups, I see:
select completion_time, marked_corrupt, media_corrupt, logically_corrupt
from v$backup_datafile
where controlfile_type = 'B'
order by completion_time desc
COMPLETION_TIME MARKED_CORRUPT MEDIA_CORRUPT LOGICALLY_CORRUPT
01/12/2011 11:27:252011 1201 2
01/12/2011 11:26:180 0 0
01/12/2011 11:25:242011 1201 1
01/12/2011 11:15:562011 1201 0
01/12/2011 01:40:100 0 0
30/11/2011 11:23:482011 1130 2
30/11/2011 11:22:440 0 0
30/11/2011 11:21:562011 1130 1
30/11/2011 11:13:002011 1130 0
30/11/2011 01:41:010 0 0
The 01:40 record will come from our nightly command:
BACKUP INCREMENTAL LEVEL=0 FILESPERSET=20 FORMAT 'full_%d_%t_%s_%p'
DATABASE INCLUDE CURRENT CONTROLFILE
The 11AM records will come from the command:
BACKUP INCREMENTAL LEVEL=0 FORMAT 'ctl_%t_%s_%p' CURRENT CONTROLFILE;
(I know backups shouldn't still be running at 11am and we don't need level 0 backups every night, that's a seperate issue I'll be addressing! ) I see there's been a similar entry here in v$backup_datafile for all backups that there's records for. The database is up and running just fine. There are no unusual errors being reported by the database in OEM or the alert log.I tried looking at both our control files (yes, should have 3 - something else I've listed to change!) with dbverify which showed no issues - though I'm not sure if this is designed to work with control files.
If so, how could I confirm whether it's an issue with a specific controlfile (I'm assuming it's not an issue with the backup to tape itself, as it's reporting the same corruption every day)?I'd obviously like to diagnose this now while the db is up and running, rather than at 4am some morning during a crash and finding out my backup control files are no good!
am learning about database block corruption and it's recovery. for practice purpose can we corrupt the block manually. i.e. can we do logical corruption.
View 8 Replies View RelatedDoes change in segment size effect the rman backup size..??
I'm trying to understand do Rman backup the empty block from datafiles..?? And if it escape the empty block than inserting data in tables (increasing the number of used block) might change the size of total backup (Rman) size
how can i corrupt a block to mock up BMR (block media recovery) workaround , I want to corrupt some block of Oracle seeded table "emp" within scott schema.
View 1 Replies View RelatedI am facing issue of block corruption in my exp backup which I am taking through expdp command. (Refer Attachment of Screen shot of error)
I want to know few things about the block corruption.
1. Why the block corruption occur.
2. How can I resolve this.
3. Can I rosolve this by deleting the same record on which this error is coming. if yes then how can I track that row in a table.
I already tried for DB verify utility. It shows the below result.
===================================================================
C:Documents and SettingsAdministrator>dbv file='E:ORADATAAFCCV1MONETA01.DBF' blocksize=8192
DBVERIFY: Release 11.1.0.6.0 - Production on Wed Feb 16 10:13:11 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
DBVERIFY - Verification starting : FILE = E:ORADATAAFCCV1MONETA01.DBF
DBV-00600: Fatal Error - [28] [27070] [0] [0]
C:Documents and SettingsAdministrator>
================================================================
how to find the corruption block and judge whether it is physical corruption or logical corruption?
View 3 Replies View Relatedrdbms:oracle 10gr2
os:windows
with reference to
[URL]......
Quote:
A.2.2 Writing Backup Scripts for Disk and Tape Scenarios
As in the disk-only scenarios, the backup scripts in this section are categorized based on database workload. as stated very clearly it depends on the workload, more precisely the rate of block change. The size of the database can be found out based on formula from
[URL]....
so how would I know the rate of block change in order to know which script is suitable for me? I try to find out the rate of block change for the database based on change tracking file but based on
[URL].....
Quote:
The size of the change tracking file is proportional to the size of the database and the number of enabled threads of redo. The size is not related to the frequency of updates to the database. So how do I determine the rate of change? can the rate of block change based on size of archive logs?
I have the following information with me:
starting from 5/10/2011 0101
ending 5/18/2011 1114
this constitute to 9.5 days
F:
ecover_area>dir/w
1644 File(s) 27,942,770,176 bytes
2 Dir(s) 10,019,270,656 bytes free
average size of each file 27,942,770,176/1644
=16996818.841849148418491484184915
average size of each day's log = 27,942,770,176/9.5
=2941344229.0526315789473684210526
about 3G
If I have a database size of 92G, based on the archive log size of about 3G per day, can I conclude that a change of 3G/92G is considered as few block change?
I have noticed a block corruption issue in my RAC database. Its an index , how to recover a corrupted index in system datafile.
SELECT tablespace_name, segment_type, owner, segment_name
FROM dba_extents WHERE file_id = 5
3 and 147551 between block_id AND block_id + blocks - 1;
TABLESPACE_NAME SEGMENT_TYPE OWNER
[code]....
We are using OCFS2 and O/S is RHEL 4.7.
It seems that Oracle does not use XOR to calculate the checksum of data blocks any more. What is the new checksum algorithm?
View 3 Replies View Relatedi want to enable block change tracking as our incremental level1 backup take a lot of time but i have a worry which i found it on oracle support and tha is as follows Database Instance Hang at Database Checkpoint With Block Change Tracking Enabled. [ID 1326886.1]
View 2 Replies View RelatedWhat i have to do for this error:
ORA-01578: ORACLE data block corrupted (file # 3, block # 42348)
ORA-01110: data file 3: '+DGMETA/metadb/datafile/sysaux.257.783871811'
Wed Nov 21 09:30:00 2012
Corrupt Block Found
TSN = 2, TSNAME = SYSAUX
RFN = 3, BLK = 42348, RDBA = 12625260
OBJN = 50439, OBJD = 50439, OBJECT = MGMT_STRING_METRIC_HISTORY_PK, SUB
OBJECT = SEGMENT OWNER = SYSMAN, SEGMENT TYPE = Index Segment
Database version is :- Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bi
We are facing block corruption error and it's refer to system datafile (SYSTEM01.DBF).Below is the script through it, we can come to know about the extent.
select segment_name, segment_type from dba_extents
where file_id=1 and 134144 between block_id and block_id+blocks-1;
select owner,index_name,index_type, table_name from dba_indexes
where index_name='I_CDEF3';
How to resolve the problem as it is related to system datafile? We tried to drop the index but system is not allowing to do.
ORA-00701 - object necessary for warmstarting database cannot be altered.
I am facing problem of logical block curruption.
SQL> select * from v$database_block_corruption;
FILE# BLOCK# BLOCKS CORRUPTION_CHANGE# CORRUPTIO
---------- ---------- ---------- ------------------ ---------
3 61454 1 1417157166 LOGICAL
3 31256 1 1417011117 LOGICAL
OWNER CONSTRAINT_NAME C TABLE_NAME
------------------------------ ------------------------------ - ------------------------------
SYSMAN MGMT_METRICS_RAW_PK P MGMT_METRICS_RAW
Can i recreate the SYSMAN schema index by dropping this one?
This is what I run
run {
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/dd_oraback/tkprod/%F';
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 22 DAYS;
sql 'alter system archive log current';
[code]...
So /dd_oraback is a Data Domain mount. Not sure if that makes any difference or not.
i have multi data block filed. and checkbox field which based on control block...My task is when i check checkbox only one field should enabled and my mouse goes to that field
e.g
item11 item21 item31 chkbox1
item12 item22 item32 chkbox2
Scenario like this :
My item field based on data block and checkbox based on control block,while i checked chkbox1 , only item31 on that current record should be enabled and i changed value only on that field
when i checked chkbox1 , my cursor goes to item31...not item32
i have a master detail form, In Master block we have one field cheque amount and in Detail block we have field receiveable amount invoice wise. if company paid us a cheque amount we will enter this amount in Master block field Cheque amount and in detail block there will be invoice wise receivable amounts. i want to distribute the cheque amount in detail block invoice wise for example
Cheque amount in master block = 291
Invoice wise receiveable amount is as follows
Invoice No , receivable amount , Received amount
10, 196 , 0
20 , 95 , 0
30 , 54 , 0
Result should be as follows:
Invoice No , receivable amount , Received amount
10, 196, 196
20 , 95 , 95
30 , 54, 0
Received amount field should be distributed according to the receivable amount when recevied amount = cheque amount then remaining will be 0.
I have a multi record control block (basically a text item displaying 6 records) where user enters values and I want to process the values using pre-insert trigger.
I want to read value in each record and then do some tasks using a pre-insert trigger before I commit the values. To navigate between the records I was using first_record, next_record, clear_record built-ins but it gives errors like "40737-illegalrestricted procedure next_record in pre-insert trigger".
I trying to write plsql anonymous block to return the name of all the employees who belongs to a specific department . I am writing below script for this and getting the error where as the same logic if i use only in a function instead of creating it within a procedure , i am not getting any error .
Script :
DECLARE
TYPE EMPARRAY is VARRAY(20) OF VARCHAR2(30);
FUNCTION getEmpArray (p_no IN NUMBER)
RETURN EMPARRAY
AS
[code].......
Error report:
ORA-06550: line 18, column 4:
PLS-00103: Encountered the symbol "end-of-file"
when expecting one of the following:
begin function package pragma procedure form
06550. 00000 - "line %s, column %s:
%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
I am studying about these two technologies and the only difference that I found was that optimization doesn't backup the duplicated archivedlogs.
If both ignore not changed blocks, what is more effective?
The optimization backup also has some tracking file?
For my task I tried to write a package that has sys_refcursor in it.It compiled well.Now I want to see the results of it and wrote a anonymous block which gave errors.
CREATE OR REPLACE
PACKAGE xyz
IS
[Code]....
Error:Invalid reference to variable 'OBJ_CUR'.
we are generating Entity beans at java appication. where application is connecting to DB and copy Table structure in Java class file. when this process start, oracle process takes 100% CPU. while there is no wait event at DB level. only queries are fired on oracle sys tables.(user_tables,user_constraints,etc..)
On trial and error based, we have changed this parameter and that java process works fine. how this parameter effect the on oracle system table.
I am trying to create standby with oracle 10g R2 from Solaris 5.10 (sun ultrasparc X86-64 bit) to Solaris 5.10(Intel Xeon 64 bit). All the mount points are the same as primary server. All the data files are at location as specified in control file. I created standby control file from primary. All the control files are at location specified in pfile.
When I am trying to mount database I am getting following error.
ORA-00202: control file: '/oracle/BP1/ctl1.dbf'
ORA-27047: unable to read the header block of file
ORA-205 signalled during: alter database mount...
I try to open database with trace file also but got following error..
ORA-01503: CREATE CONTROLFILE failed
ORA-01565: error in identifying file
'/oracle/BP1/sapdata1/system_1/system.data1'
ORA-27047: unable to read the header block of file