I am getting the below error when I run utlrp in my database.
ERROR at line 1:
ORA-08102: index key not found, obj# 423571, file 6, block 113416 (2)
ORA-06512: at "SYS.UTL_RECOMP", line 760
ORA-06512: at line 4
I have run dbverify on File_id=6 but it did not return any corrupt pages or blocks.
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?
I was carrying out an experiment in order to crash the database and recover it.
The database was running, I moved the control file to another location and to my surprise the database was still running. I tried issuing checkpoint and transaction but it didn't affect database operations. I tried doing log switch. It completed successfully. According to my understanding and Oracle Certification books database was supposed to crash. But it didn't.
I tried this not only on RHEL, Windows XP but also in Solaris 5.10. The database version is Oracle 10.2.0.4 Standard Edition.
I observed logical corruption in one of the database, while running select on some tables observed ORA-01410: invalid ROWID error. These errors or errors related to this logical corruption are not reported in alert log file.
Since our database is in NOARCHIVELOG mode and regular backups are not happening through RMAN (weekly cold mount point backup to tape),
i was not able to use RMAN to investigate block corruption.
So used DBVERIFY on all datafiles of database to check the consistency of datafiles, and found DBV gives error for one of the datafile - 'Completely zero block found during dbv:' As i mentioned earlier, we are not taking regular backups using RMAN and database is in NOARCHIVE mode.
I have a sql script where triggers, procedures and functions are written. The triggers are causing db outages and causing problems in the application as well.
I am trying my best but with my low experience and expertise, am not able to make good progress.
Scenario: Course enrollments are inserted, deleted and updated in course_main and course_users table. This is done in gui as well as in background snapshot scheduler in a cron process. Course_main table contains all course enrollments and course_users table has crsmain_pk1 as foreign key.
Its quite a big file and am not sure what should i paste here so am uploading the file in txt.
I am cloning my prod db to test with the rman active clone command. I can successfully clone my DB, but after a few hours or so I see messages in the alert log that I have corrupted blocks in several datafiles. Note, i dont see these messages in my PROD DB therefore I think that DB has no corruption. I have few questions:
1) I was reading tha having tables or indexes set with the NOLOGGING option can cause objects to be unrecoverable. Would this affect my active clone?
2) I know you can either change a DB or tablespace to force logging. Is there a query I can use to determine if the DB is in force logging mode.
ALTER TABLESPACE tablespace_name FORCE LOGGING;
ALTER DATABASE FORCE LOGGING;
3) Lastly how to check as why my clone DB would have corrupted blocks.
Here is the clone command I am using.
rman catalog=rman/rman@proddb target=sys/sys@proddb << EOT
connect auxiliary sys/sys@clonedb
duplicate target database to clonedb from active database nofilenamecheck
pfile=/u01/app/oracle/product/11g/dbs/initclonedb.ora ;
exit
EOT
While taking a full export i came to know there was a block corruption in SYSAUX tablespace. I dont have any COLD/HOTBACKUPS/RMAN BACKUPS. As i have only the Exp backups and the database is in archive log mode. Whether is it possible to recover the BLOCK CORRUPTION with exp backups.
View 12 Replies View RelatedHow can i check for datafile corruption or a datafile error,its some tool like Linux (fsck) command in Oracle that can halp to me to chack a datafile?.
Is any way to isolate the disk region that is corrupted?
If a disk error exist an an ASM disk group how can i isolate the error from that disk group? It's an alternative different to the VALIDATE DATAFILE command in RMAN?I'm using Oracle 11GR2 on a Linux Box.
I 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>
================================================================
I am trying user managed recovery using archived and redo log files. I had restored old cold backup, then copy latest control file, redo log files, and archived log files at actual locations. Now I tried to recover database using following steps.
Quote:
connect sys as sysdba
startup mount;
recover database;
auto
After applied some archived files, one of the archived file corrupted and recovery cancel due to error, then i shut down the database. Now i want to copy corrupted archived file from backup and run the recovery further. so my question that should i have to run recovery from the beginning or can i run the recover from the last status of the database.
1) What is PHYSICAL/LOGICAL Corruption.
2) How it occurs.
3) Will RMAN works on both the types of corruption or only Physical (My senior told it works on both).
how to find the corruption block and judge whether it is physical corruption or logical corruption?
View 3 Replies View RelatedThe database is running in archivelog mode and we have a standby with Maximum performance.There is no RMAN backup..We have noticed there is block corruption while accessing some tables.Now i would like to know are the corrupted blocks also replicated to the physical standby? Is there a way to recover the data from these corrupted blocks without shutting down the database ?
View 1 Replies View RelatedI 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.
I have a database where view v$database_block_corruption shows a corrupted block
SQL> select * from v$database_block_corruption;
FILE# BLOCK# BLOCKS CORRUPTION_CHANGE# CORRUPTIO
---------- ---------- ---------- ------------------ ---------
4 756652 1 5.5157E+12 CORRUPT
I am not able to get the relevant segment from the above information
SQL> select segment_name, segment_type, owner
2 from dba_extents
3 where file_id = 4
4 and 756652 between block_id
5 and block_id + blocks -1;
no rows selected
DBVERIFY Summary
DBVERIFY - Verification complete
Total Pages Examined : 3932160
Total Pages Processed (Data) : 3119107
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 755048
[code]....
I have uploaded the complete logfile.
Below is a part of logfile
DBVERIFY - Verification starting : FILE = /prd/dvp/ora/oradata/LHF/disk06/gds_t01_01.dbf
Block Checking: DBA = 21728172, Block Type = KTB-managed data block
**** kdxcoavs = -84 < 0, avail = 3129
---- end index block validation
Page 756652 failed with check code 6401
##not here that 756652 is the same block# mentioned in v$database_block_corruption
here i tried finding the OBJECT ID as below
SELECT dbms_utility.data_block_address_block(21728172) "BLOCK", dbms_utility.data_block_address_file(21728172) "FILE" FROM dual;
BLOCK FILE
---------- ----------
756652 5
Now for the same BLOCK it is giving different File, again the segment_name or segment_id could not be found from the above information.
I'm using Oracle8i, with VB6 as front end When i try to connect Oracle using RDO in VB i get an error message from Oracle It is S1000:Oracle ODBC.ora Ora:1043 User Side Memory Corruption.
View 11 Replies View RelatedWe 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.
Is there a way, i can extract index DDL from my database?
View 1 Replies View RelatedI am on 11.2.0.3 Enterprise Edition. We are using the new feature "Composite Domain Index" for a Domain index on a very large table (>250.000.000 rows). It really works with mixed queries. We added two number columns using FILTER BY.We have lots of DML on this table. Therefore, we are executing synchronize and optimize once the week. The synch behaves pretty normal. But "optimize_index" takes a very very long time to complete. I have switsched on 'logging' for the optimize process. The $I table takes some time but is finished normally. But the optimization of the $S table (that is the table created for the CDI feature) is running over 12 hours now - and far from being finished. From the logfile, I can see that it optimizes 1000 rows every 20 minutes. Here is the output of the logfile:
Oracle Text, 11.2.0.3.0
14:33:05 06/26/12 begin logging
14:33:05 06/26/12 event
14:33:05 06/26/12 process $N for optimize: SEQDEV.GEN_GES_DESCRIPTION_CTX_I
14:33:16 06/26/12
14:33:16 06/26/12
[code]....
I haven't found a recommendation from Oracle not to use "optimize_index" for Domain Indexes with CDI. But in my case, it would be much faster just to drop and recreate the Domain Index in question.
Our database size is 100GB and i removed few records from a table and rebuild the index.The size of Index reduced considerably after Index rebuild but now i see our database size increased to 115GB.I know online rebuild creates second index which is also removed after the build is finished then why the increase in database size?Is there a way so it shows up more space ?
select sum(bytes) from dba_segments where owner='abc' and segment_name='abc_index_1';
8GB
ALTER INDEX abc_index_1 REBUILD ONLINE ;
select sum(bytes) from dba_segments where owner='abc' and segment_name='abc_index_1';
2GB
We have a requirement from the customer to start using data and index compression in our 11g database.. Is this something available in Oracle 10g,11g without any additional costs? We are not sure if this will work with our application so we will have to test it in-house, is it possible to compress the existing table data/index to test it out?
View 3 Replies View RelatedHow to verify if rebuild an index is required in database.
View 9 Replies View RelatedI have a huge table (about 60 gb) partition over range. The index on this table is global index created on 4 columns together. I have a query which is running very slowly. The explain plan is showing the use of this global index.Explain plan is not showing pstart and pend because the index is global.
View 6 Replies View RelatedI have a global index and I want to convert it to local index.Is there a way to recreate local index with out dropping the global index.
I can create a local index first and then drop the global index. But is there a way to create it with out dropping the global index, just convert it.
I am facing the error "ORA-01502: index or partition of such index is in unusable state " while loading the text data using
sql loader with direct path (direct = Y ,rows = 10000) option. Table consists an composite non unique index. If I query the dba indexes for the effected index it shows the index status as VALID. There was no maintaince done on the effected table or index. I have tried loading the same data using conventional path but didn't found any issues for the same.
I have a query which had a join:
a.c1=b.c1 and a.c2=@var
where @var is user supplied input at runtime...We had a index on a.c2 . The CBO would use this index to generate an opitimised query plan.We found some records from table "b" were dropping due to inner join. So we made a change in join. It'd be like
a.c1(+)=b.c1 and nvl(a.c2,@var)=@var
This query is no longer using the index, instead its doing a full table scan causing the query to slowdown.I have tried creating index on nvl(a.c2,'31-dec-9999')
But the CBO won't use it.Anyway to create index on this col so that full table scan can be avoided?
How to force an index if the table not using the index?
View 10 Replies View RelatedWe have occurrences of enq : TX - index contentions in the database. Using the SQL ID, we have identified the INSERT statement and the table which they are trying to insert.
This table has almost 25 different indexes, some of which are unique as well.I am wondering how to identify the actual index causing issue, out of these 25 indexes.
Is there any way to pin point to the name of index which is causing the lock?My plan is, once the index is identified, I would like to check the extents and inittrans and other attributes of this index to fix.
Can we create non-cluster index on a clustered index?
View 5 Replies View RelatedAny on give explanation for difference between Index and Clustered Index?
It will be great if i get explanation how memory allocation and Execution takes place.?