Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [corruption]

Data corruption refers to errors in computer data that occur during writing, reading, storage, transmission, or processing, which introduce unintended changes to the original data

2
votes
0answers
9k views

Cannot continue the execution because the session is in the kill state

When I query a table in my database, I am getting the error message as below. Msg 596, Level 21, State 1, Line 0 Cannot continue the execution because the session is in the kill state. Msg 0, ...
0
votes
1answer
908 views

Restoring corrupted bak file

Our server & Backup data got crashed and we had a recovered the data using the recovery Tool. Currently I am having .BAK Files. When we are trying to rebuild the DB using the recovered .bak file ...
2
votes
1answer
152 views

Hi, I have sitution where my Database has corrupted but some how we have recovered it but while restoring the .bak file it shows an error

this is the error show while restoring the corrupted file .. Pls help if any one know Thanks
3
votes
2answers
3k views

Table Corruption Error

I have a problem with my SQL Server database. Today I opened it and saw an error – SQL Server Table Corruption Error. I don't know the reason for this error. I applied SQL Server Management Studio, ...
1
vote
1answer
62 views

Is it OK for the database to be completely overwritten for many times?

A simple and maybe too amateur question, but: is it good for a table on the database to be consistently (for example, every day) completely overwritten? I get regularly (every day) the data for the ...
0
votes
1answer
475 views

Mysql MyIsam tables get corrupted

I am facing the myisam tables get Corrupted frequently but I don't know exact root-cause for this problem. However I will do Repair/MyIsamchk --auto-repair whenever the table gets corrupted. Please ...
0
votes
1answer
733 views

index-*.wt: encountered an illegal file format or internal - WT_PANIC: WiredTiger library panic - aborting after fassert() failure

One hypervisor went down for 7 seconds and afterwords I couldn't start mongod. See error. Replicaset with 3 nodes. I use /var/lib/mongodb-mms-automation/mongodb-linux-x86_64-3.2.8/bin/mongod. I fixed ...
1
vote
1answer
797 views

After Oracle 11gR2 restore & recover database, “ghost” NOLOGGING corrupt blocks

I recently restored (from full, level 0 cold backup) an ARCHIVELOG database & recovered it to a point in time about 24 hours after backup. I ran RMAN validate and numerous blocks turned up in V$...
0
votes
2answers
194 views

PostgreSQL 8.1 Corruption Issue

I have an old Postgres server that some major corruption problems on one of the databases. We first noticed the issue when the drives started to fill up on a database that should have plenty of space. ...
2
votes
0answers
2k views

mysqldump show Table doesn´t exist when doing LOCK TABLES

Our server had power outage and after start some of mysql tables was inaccessible. I tried many things but nothing helped and currently i am at freeze point. I used command : mysqldump database ...
1
vote
0answers
782 views

'mysqlcheck' hangs over a database

Sometime ago I noticed my WordPress sites wont load. I found the problem with MySQL. The server I am running on is a VPS server with: Debian 8.1 MariaDB - Ver 15.1 Distrib 10.1.14-MariaDB 2048 MB ...
1
vote
1answer
339 views

Repair with data loss did not fix index corruption. What now?

A few months ago we migrated our SQL Server 2014 database to a virtual environment. Soon afterwards, corruption started showing up in indexes, causing all sorts of trouble. I've made repairs using ...
6
votes
2answers
2k views

ANALYZE TABLE..VALIDATE STRUCTURE runs forever

So, as I've mentioned before, I am a SQL Server DBA/Consultant who is helping out a customer with their Oracle databases. Mostly, I've been able to figure out what I need to and work through things ...
5
votes
1answer
3k views

DBCC CHECKDB errors

I am having some issues with my SQL Server database. When I run this: select * from dbo.Entity where Oid='191FAF30-4729-4145-8106-60E34A8E164C' ...it spits out the following error. Msg 823, ...
0
votes
1answer
1k views

Postgres Error: could not read block 167593 in file… SQL state: XX001

When creating a new column on a table, I'm getting the following error: ERROR: could not read block 167593 in file "pg_tblspc/16384/PG_9.4_201409291/16386/157223695.1": read only 0 of 8192 bytes SQL ...
2
votes
1answer
748 views

Attach corrupted database

In a little C# tool, I use an a mdf file to save my data. The file became inconsistent, which isn't really a problem as there only a few changes since my last backup. Anyway, I would still like to ...
0
votes
0answers
2k views

SQL Server 2012 service will not start after each server reboot - corrupt SQLBOOT.DLL

When I tried to start the service manually from a command prompt, I get a dialog stating: Your SQL Server installation is either corrupt or has been tampered with (Unable to load SQLBOOT.DLL (HRESULT ...
4
votes
1answer
142 views

MySQL Killed by OOM after Corrupted Database

One of our web-app servers recently had an issue where MySQL was taking more memory than we have physical RAM. This server has 64GB of memory and 8GB in swap, and MySQL was OOM-ed because it was ...
0
votes
1answer
174 views

How does one create a notification upon corruption being found during Automatic Page Repair under database mirroring?

I read: https://msdn.microsoft.com/en-us/library/bb677167(v=sql.120).aspx#UnrepairablePageTypes But, I am unclear how I can set up a notification so I am aware when this occurs. Any advice?
2
votes
1answer
737 views

How to check a database for a specific page

I am working on repairing a database, I have about 80 errors that I need to fix and there seem to be three types of problems that I don't know how to fix other than doing a REPAIR_WITH_DATA_LOSS. I ...
3
votes
2answers
3k views

repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB

Working through a database corruption issue. I am working on a copy in a development environment. Some were corrupt indexes in which case I just dropped and recreated it. These however are data ...
0
votes
1answer
560 views

Preventing MySQL index corruption

I'm having a recurring issue with a MySQL database where one index in particular has been getting corrupted. Originally I saw a corruption event about every 2-3 weeks and this week I've seen it happen ...
2
votes
1answer
774 views

Msg 8905: DBCC CHECKALLOC Error Messages

We recently experienced a database corruption and run integrity checks. DBCC CHECKDB returned a lot of consistency errors and 2 allocation errors. We have fixed consistency errors by moving data, ...
0
votes
1answer
617 views

Oracle: dbms_repair outputs zero errors about known corrupted object

In an Oracle 9i instance we have a datafile with corrupted blocks as evidenced by the log generated by the exp utility: . . exporting table IMPORTANT_TABLE EXP-00056: ORACLE error ...
1
vote
1answer
763 views

Real corruption?

We have a production database for Solarwinds Orion Network Performance Monitor in which we discovered corruption in a MapStudioFiles table following DBCC CHECKDB errors. CHECKDB Output: Msg 8961, ...
1
vote
0answers
308 views

Three Vital Postgres Columns Corrupted

I run a small website which uses a Postgres database. There are regular back ups based on the amount of traffic we have every few days but there was a recent surge of activity just before a power cut ...
3
votes
1answer
725 views

Reattaching MDF files recovered from RAID 5

We had been running a SQL Server 2005 server for many years at our company when just recently, we ran into some trouble. The server was configured with RAID 5 and had one hot spare disk in the array. ...
3
votes
2answers
637 views

Is there a Maintenance Plan that checks my database for corruption?

Is there any way to make a maintenance plan check all my databases on a single instance? Is the maintenance plan Check Database Integrity Task enough ?
2
votes
0answers
518 views

Database Corruption - object in sys.parameters does not have a matching row in sys.objects

I'm using SQL Server 2008 R2 and I have a strange db corruption. I ran dbcc check db and the output is: Attribute (object_id=1096186) of row (object_id=1096186,parameter_id=1) in sys.parameters ...
6
votes
2answers
674 views

SQL Server Backup transaction error

Hi I am attempting to backup the transaction log file to setup mirroring in SQL Server I execute BACKUP LOG CUSTOMER TO DISK ='K:\JonDB\CUSTOMER.trn' WITH INIT GO And I receive Processed 6587361 ...
1
vote
2answers
4k views

Logical consistency-based I/O error

I am using SQL Server 2008 R2. My server got accidentally shutdown. After restarting it, I am not able to access my database. I am getting the following error for a few tables: SQL Server detected ...
0
votes
2answers
129 views

Update row count on corrupt table

I have a corrupt table, 1 dodgy page about 1.6 million rows into a 2.9 million row table. I want to attempt this: ALTER DATABASE [CorruptDB] SET SINGLE_USER WITH ROLLBACK IMMEDIATE; DBCC CHECKDB (...
0
votes
0answers
1k views

“mysqld got signal 11” error

I have a MySQL 5.6.22 InnoDB database and just now, suddenly out of nowhere, when I try to start it up using /etc/init.d/mysqld start, I see this error in the error log and the server won't start up : ...
3
votes
0answers
177 views

VSS Writer : RESTORE VERIFYONLY FROM VIRTUAL_DEVICE breaks log shipping

Log shipping has been working for a very long time, but now and then it breaks. I found it sometimes breaks (causes the transaction log to become corrupt and I get the message : "media family on ...
0
votes
0answers
92 views

DBCC REPAIR_REBUILD adds rows

SQL Server 2008 R2, an update corrupted my table somehow, likely to do with the storage subsystem. I am on a dev database, so aren't overly concerned about losing data, it isn't business critical. But ...
1
vote
1answer
411 views

BACKUP Detected Corruption in the database log

I took a backups of a few db's on server A (2008R2), Then restored it to server B (2012). One database had TDE enable, so I disabled it, took a back up then proceeded to server B. The other database, ...
2
votes
1answer
157 views

Troubleshoot corruption in SQL Server Database [closed]

I have been asked by my interviewer "How do you troubleshoot corrupted data in SQL in SQL Server 2012?"
1
vote
1answer
1k views

Postgres corrupted index on update

Sometimes, when doing an update on a specific table record, i get this error: index "myIndexName" contains corrupted page at block 468 Please REINDEX it. But on the next update it works, without ...
2
votes
0answers
889 views

Data Corruption - ERROR: could not open segment 2 of relation

I am getting the below error for a production database. I am new to PostgreSQL databases. I need help to get this fixed. 2015-10-28 10:25:04,154 [monitor-thread-pool1-thread-6] ERROR [org.hibernate....
6
votes
3answers
2k views

How to run OPTIMIZE TABLE on a 3-node cluster?

I've my hands on a 3-node Percona XtraDB Cluster where, according to mysqlcheck, some tables are corrupted (some indexes contain the wrong number of entries): mydb.mytable Warning : InnoDB: Index '...
1
vote
1answer
7k views

Corrupted InnoDB table, mysqlcheck and mysqldump crash server

I manage a Percona XtraDB Cluster that uses a network storage with a flapping connection. Periodically we experience a high iowait with crashes and remount of the fs in read-only. Replacing the ...
2
votes
0answers
226 views

Old records disappearing after upgrade from 9.4.1 to 9.4.4

I recently upgraded from 9.4.1 to 9.4.4. Since then millions of rows have disappeared from several tables containing historical data. The severity of data loss seems to be directly proportional to ...
2
votes
1answer
136 views

Dealing with corruption: file-level backup vs. pg_basebackup

The wiki on corruption recommends immediately taking a file-level backup of your database by stopping the postmaster and using tar, but I was under the impression that using pg_basebackup was a better ...
0
votes
0answers
311 views

Backup storage file corruption: file not found. Possible cause of this error is corruption of backup file

I backup my SSAS cubes called "BI LIVE" and restore it to a specific location on a different server. I am using sql server 2014. This is where you can see the routine I use to run the backups: How ...
0
votes
1answer
2k views

mongod 2.6 corruption (Assertion failure isOk() src/mongo/db/storage/extent.h 80)

I have been using mongo 2.6.0 for some time on 64-bit centos (with journaling enabled). One fine day when we were testing to insert a document to one of the collections, we started seeing data ...
1
vote
0answers
2k views

PostgreSQL 9.4.4 Crashing

We are having 9.4.4 version running on linux( PostgreSQL 9.4.4 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-9), 64-bit) which is crashing unexpectedly and coming ...
1
vote
1answer
249 views

Unable to load mysql dump file

I recently had to deal with migrating some servers over (rather was forced to by the hosting company) and we took too long to migrate our data so they did it for us. Unfortunately they just copied /...
2
votes
1answer
630 views

Postgres 9.2 - postgres - FATAL: XX000: relation mapping file “global/pg_filenode.map” contains incorrect checksum

We have a ~400GB Postgres database (v9.2.6) (running on CentOS 6.5) that had a problem with free space and with every command (ls, pwd etc) we were seeing a segmentation fault error. We were able to ...
0
votes
0answers
41 views

Oracle DB - DR corruption

One of my databases in my DR is fully corrupted ( I have checked running validate database using RMAN). Now to recover all the data files which are corrupted I need to copy the data files from my ...
1
vote
1answer
820 views

MySql Innodb corruption recovery

I have a MySql database, just containing Innodb tables, that seems to have corrupted itself. It replicates to another server and it has corrupted that one too! The symptom is that I can restart the ...