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

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Postgresql pgAdmin, count(*), max(pk_field) giving inconsistent results

I am running postgresql 9.3.4 on a Centos 6.5 server as a back end for a web app which I am currently load testing. Presently, if I visit the state table in pgAdmin, right click on "count", I get a ...
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Uploaded files corrupted except txt/csv

I have an ASP.NET MVC 4 Application with standard CRUD functionality plus a file Upload capability. Currently I am struggling with the files being corrupted after the download. I created a ...
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Checking records consistency after mongorestore --noobjcheck

I had an HDD malfunction on a Mongo node. After running fsck and mongod --repair I was able to dump the needed collection with mongodump and move it to another server. However, some records appear ...
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What is data like *after* fixing a corrupt MyISAM or InnoDB table?

I collect user data and store in an a database. Some of the tables are MyISAM and some are InnoDB. Lately, both have been experiencing regular corruption for reasons not clear. I know that restoring ...
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mysql Wrong bytesec: 0-0-0 at linkstart: 0

I have several MySQL (MyISAM) tables that have been corrupted. Running CHECK TABLE mytable returns: > +-----------------+-------+----------+----------------------------------- | > ...
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Corrupted Filesystem: Possible to restore databases from the contents of /var/lib/mysql?

Using CentOS 6.4 x64. Not sure what happened but somehow my VPS filesystem got corrupted and it is now in a permanent read-only state. I've been working with my hosting provider's sys. admin. but ...
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110 views

Error while taking backup in SQL Server

Before few month box of SQL has been crashed. We have almost database back with some tools and running application smoothly on it. But when i try to take backup of database at that time it gives error ...
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234 views

Possible schema corruption. Run DBCC CHECKCATALOG

Good Evening to all. I was working with sql server 2008. Thing i did: Actually i was noticed that the free space available in C drive reaches below 1 GB .So i thought to Club the D drive with C ...
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44 views

MyISAM : Should I be concerned by these warnings?

I restored some tables from recent Databases backups. Because Im supporting a legacy system that only uses MyISAM tables in their DBs, for backing up I used a little script that pretty much copies all ...
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76 views

CHECKDB Allocation Errors Msg 2576, could not repair, object id does not exist

I inherited a database that has no value in LastKnownGood. I ran repair allow data loss, says it was successfully repaired, but no change to the errors when I run checkdb again. In case it was a SQL ...
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1answer
140 views

Fixing a corrupt Log File in small downtime window

I am working with a client who has been receiving the following error from their Log backups of one of their SharePoint databases: Backup detected log corruption in database FOOPORTAL_SP2010_Config. ...
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72 views

Cannot access Properties page of a database

I'm in the process of decommissioning a database server and migrating the databases from one server to another. I was attempting to get the the properties of the database and received a SQL Error ...
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RDS MYSQL instance rebooted and won't load INNODB table

So my production db in RDS apparently either crashed or was rebooted during a version update, and upon being restarted mysql couldn't load one of the innodb tables: as evidenced by the following error ...
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1k views

ORA-15081: failed to submit an I/O operation to a disk

I have a test environment for Oracle single instance on ASM 11.2.0.3. I have restored database from tape and during the recovery, the system crashed by some I/O error. I restarted the server, ...
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2answers
123 views

How can I repair a TokuDB table?

I have a TokuDB table that works fine for most queries, but segfaults on others. I did a CHECK TABLE which indicated that the table had errors. However, TokuDB doesn't support REPAIR TABLE. How can I ...
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Why does data get corrupted in “large” text files - Reasons to use database

I am just starting to learn about databases and using mysql. I read that databases are more reliable than having large ascii text files and that ascii text files are more prone to corruption as they ...
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818 views

Trying to restore a corrupt Postgresql database, with corrupt data folder. Able to start postgres but the tables are empty?

Postgres 9.3 on Ubuntu 12.04 We had some disk corruption on our server, and after doing a fsck the database would not start. To get us back into production, I copied the postgres data folder, blew ...
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369 views

Strategy for Repair Database on SQL Server 2008 R2 Standard

(one guy pushed green button instead of blue, three racks left as was his original target, probably green is nicer then blue, on this SAN are saved database files) after this accident I'm run ...
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480 views

sql server 2008 r2 DBCC checktable error

This morning my database went into suspect mode. I reverted back to last night's full backup to get it back online. I went through the error log and found the last command that appeared to cause the ...
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338 views

mysql innodb corrupt database - mysqld won't start

I am unable to start mysqld. I tried innodb_force_recovery = 4 in /etc/my.cnf Here is the relevant lines in /var/log/mysqld.log which suggest that recovery fails and I probably need to recover from ...
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2k views

MySQL relay log corrupted, how do I fix it? Tried but failed

A MySQL v5.1.61 relay got corrupted when the machine suddenly shut down. I tried to fix it but it didn't work. — How do I fix it? Did I do something wrong? As far as I've read, corrupted MySQL relay ...
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253 views

FATAL: catalog is missing 1 attribute(s) for relid 2662

I have a server with PostgreSQL9.1-903 (Windows 7 Professional). After a power cut my database is inaccessible (I presume that the database is corrupted). The postgreSQL service starts but the ...
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160 views

Recover corrupted blocks in Oracle 10g XE

I am using Oracle 10g XE. I've noticed corrupted block error in datafile 1 in alert log. As I've found Oracle XE doesn't support Block Media Recovery(needs to be Enterprise Edition). So I did the ...
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308 views

mysql doesnt have write access in data dir?

I am running a MySQL on my Windows 7 64 bit development machine at work and I can't seem to get around a database corruption issue. In my unit tests it is telling me that the storage engine (which is ...
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DBCC CHECKDB unfixable corruption: Indexed view contains rows that were not produced by the view definition

TL;DR: I've got an unfixable corruption in an indexed view. Here the details: Running DBCC CHECKDB([DbName]) WITH EXTENDED_LOGICAL_CHECKS, DATA_PURITY, NO_INFOMSGS, ALL_ERRORMSGS on one of my ...
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231 views

Full-text Catalog Corruption

I have a SQL Server 2005 database that I backed up and restored onto a new server running SQL Server 2012. So far so good. This morning I had a really bad power outage and the new server went down. ...
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Optimize command issuing “'View is not base table” and “Corrupt” error messages

I have no experience with MySQL. My boss ran an optimize against a MySQL database. Against a bunch of views we got the message "tablexyz" is not BASE TABLE and the next has message is ...
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Oracle database and data has been corrupted. Is there a way to get it back? [closed]

The Oracle database has been corrupted and both the data and backups were lost in the corruption. Is there anything I can do to recover my data? It would be terrible if it were all lost.
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How do you correct a corrupted index in Oracle?

I have this ORA error in our logs: Caused by: java.sql.BatchUpdateException: ORA-01578: ORACLE data block corrupted (file # 8, block # 22921) ORA-01110: data file 8: ...
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1answer
130 views

How do you correct a corrupted index in Oracle? [duplicate]

I have this ORA error in our logs: Caused by: java.sql.BatchUpdateException: ORA-01578: ORACLE data block corrupted (file # 8, block # 22921) ORA-01110: data file 8: ...
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875 views

MySQL loses connection

I think we've got a corrupt table in this situation. A website with a Drupal setup we host shows the following error: General error: 2006 MySQL server has gone away: SELECT expire, value FROM ...
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SQL Server TDE Stuck at Encryption_State 2 and 0% on a Tiny DB

I'm having a heck of a time with this issue and can't figure out what is wrong. I'm not sure how long this tiny DB has been in 'encryption_state = 2' from query: SELECT * FROM ...
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1answer
805 views

View dropped, now shows as table “in use”, can't drop

I have a view on a MySQL/MyISAM setup, then the underlying table had a column dropped, and made that view invalid. I tried dropping the view so I could recreate it, then MySQL said it was a table ...
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SQL Server 2005 database corruption. Advise

I have encounter some database corruptions in the past but I knew which object has hit the road. In this situation I run a DBCC CHECKDB against a problematic SQL Server 2005 database and I get the ...
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333 views

What would cause Mysql database entries to be truncated to 253 characters?

Randomly seeing database entries truncated to 253 characters on a php site and can't figure out why or if it could be malicious or a corruption issue. Any thoughts would be appreciated.
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1answer
246 views

How to recover data around corrupted data in table? [closed]

I have a SQL Server database with some corrupted data unrepairable via DBCC CHECKDB in a table. I can get many of the rows before the corruption out - but how do I get the rows after the corruption ...
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977 views

MySQL: Can't find record in tablename

After crash: mysql> repair table lot_not_sold; +------------------------+--------+----------+---------------------------------------------------------------+ | Table | Op | ...
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1answer
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MySQL INNODB corruption after server crash during concurrent truncate command

My server crashed today I think due to a concurrent truncate table command on one of our INNODB tables. The server could be restarted, but after it starts up, everytime I try to issue an SQL command, ...
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1answer
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MySQL 5.5 : (InnoDB) - Manually edited an .ibd file to test recovery, now entire MySQL installation is broken!

So I wanted to test MySQL recovery from Innodb corruption. file-per-table is enabled. I have a few test db's on the MySQL instance. I shutdown mysql. Manually edited/added random characters to an ...
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1answer
225 views

An inconsistency in SQL Server 2008 R2

(could be) possible duplicate with An inconsistency was detected I have small table that returns from query UDA-SQL-0114 The cursor supplied to the operation "sqlOpenResult" is ...
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1answer
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Fixing corrupted Firebird database

I have a 200 GB Firebird database (created with Firebird 2.1.3, currently running 2.1.5), and it appears to be corrupted. When I try to do a backup I get: database file appears corrupt <> ...
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Attempt to fetch logical page (5:65424) in database 2 failed

I am getting following SqlException on calling a stored procedure - Attempt to fetch logical page (5:65424) in database 2 failed. It belongs to allocation unit 7349876362857938944 not to ...
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Consistency errors for a SharePoint database

When I check my database (SQL Server 2008 R2, Windows Server 2008 R2, SharePoint 2007 DB) with the command: DBCC CheckDB I get 12 consistency errors (see below). Is the only way to fix it with ...
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1answer
686 views

InnoDB “corruption”

I use: 5.1.63-0ubuntu0.11.10.1 Apache/2.2.20 (Ubuntu) MySQL client version: 5.1.63 The system is continuously displaying the following error during reading data from a MySQL database: ...
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5k views

ora-01410 invalid RowID sporadically in a select statement

I have a select that looks up some data by a join. The system runs Oracle 10.02g and the select looks like this SELECT distinct t1.crit FROM table_name1 t1 INNER JOIN table_name2 t2 ON t1.crit ...
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innodb_force_recovery when InnoDB corruption

When I start mysqld (in /etc/init.d), it failed with InnoDB: corruption in the InnoDB tablespace. What's the best innodb_force_recovery value to force mysqld to start? I have tried 4 and 6, but ...
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196 views

SQL Server Database Corruption Problem [closed]

I have developed a simple App in Microsoft VB.Net 2008 in which I have implemented database connectivity with SQL Server 2000. After 4 to 5 executions of the program I often find my database goes ...
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Recover PostgreSQL database from WAL errors on startup?

I'm trying to set up an OpenStreetMap server on an Ubuntu 12.04 machine using the Ubuntu packages listed at switch2osm.org. I initially installed and set up everything using a Northeast US-only map ...
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269 views

Salvaging data from corrupt tables PostgreSQL

Am in the process of salvaging very crucial data from a corrupted database. Am getting the following error from a very crucial table ERROR: invalid page header in block 94206 of relation ...
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2answers
2k views

Trouble recovering data from corrupted PostgreSQL tables

I'm trying to recover my database after a recent corruption of the same. Now I have two tables that are really giving me trouble. When I do select count(*) One table returns: ERROR: could not ...