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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

7 votes
2 answers
731 views

Microsoft SQL Server | Investigate Root Cause of DBCC CHECKDB error | (SQLSTATE 42000)(Error 8992 | Catalog Msg 3853)

Details: I am running Microsoft SQL Server 2022 Microsoft SQL Server 2022 (RTM-GDR) (KB5046861) - 16.0.1135.2 (X64) Oct 18 2024 15:31:58 Copyright (C) 2022 Microsoft Corporation Standard Edition (64-...
Lucas Bjørndal's user avatar
3 votes
1 answer
153 views

500 million is becoming a horrible negative number on replicas

I need some assistance understanding what looks like a corrupted value in replicas. Here's the scenario: 1 primary database, 8 read replicas. Database is MySQL, deployed with Amazon RDS. There is a ...
KernelDeimos's user avatar
3 votes
1 answer
338 views

How to recreate corrupt innodb tables with innodb_file_per_table?

MySQL refuses to start up and I was only able to start in read-only mode using innodb_force_recovery = 6. Every answer I've found on this topic suggests making a backup, deleting ibdata and ...
You Old Fool's user avatar
0 votes
0 answers
24 views

Commit Log Corruption & Cluster Resilience in K8ssandra on GKE

I'm Eran Betzalel from ExposeBox. We're migrating our big data infrastructure from Hadoop/HDFS/HBase VMs to a modern stack using GKE, GCS, and K8ssandra. While the move is exciting, we're currently ...
Eran Betzalel's user avatar
0 votes
1 answer
110 views

How can I know that it is safe to failover a Basic Availability Group?

Today, I learned the hard way that you cannot corruption check a Basic Availability Group's secondary. Given this limitation, how can I know that it is safe to failover a BAG? For all I know, the ...
J. Mini's user avatar
  • 1,248
3 votes
2 answers
610 views

Why is running database integrity checks in parallel beneficial if you are following best practice on Enterprise Edition?

On Enterprise Edition and Development edition, database integrity checks (e.g. DBCC CHECKDB) can run in parallel. According to best practice, backups should be tested regularly. So if I'm following ...
J. Mini's user avatar
  • 1,248
0 votes
1 answer
160 views

How to fix corrupted index "item order invariant violated" in PostgreSQL?

amcheck reports following error: select bt_index_parent_check(34465); ERROR: item order invariant violated for index "admin_access_rights_pkey" DETAIL: Lower index tid=(282,71) (points to ...
Tombart's user avatar
  • 1,180
0 votes
0 answers
119 views

mariadb-backup consistently produces corrupt backups after 11.4 upgrade

We recently upgraded mariadb 10.3 to 11.4. Upgrade went surprisingly smoothly, but now backups taken using mariabackup are consistently corrupted. We use mariabackup to create replicas using the ...
Alex's user avatar
  • 1
0 votes
1 answer
52 views

Why my mysqldumps are corrupted?

Every night laravel scheduler runs "mysqldump -h $dbHost -u $dbUsername -p$dbPassword $dbDatabase > $path/$filename" command through exec() functon. And sometimes the dump is corrupted in ...
Lui229's user avatar
  • 1
0 votes
2 answers
111 views

corrupted system files, how to recover databases for a fresh install?

newbie here. Our system files got corrupted and we no longer can access the control panel or phpmyadmin, but we do have access to SSH and FTP, and to my understanding, you can backup databases locally ...
Bob's user avatar
  • 1
0 votes
1 answer
238 views

Deleting table with metadata corruption on SQL Server

We are trying to recover from an event and struggling with some issues that have been created within our database. One of our tables (Users) seems to have gotten corrupted somehow, as we get this ...
lmkruse18's user avatar
0 votes
1 answer
90 views

What is the minimum level of DBCC CHECKDB needed to check full-text indexes?

I have a database containing an unreasonably large full-text index. DBCC CHECKDB WITH PHYSICAL_ONLY takes about 25 minutes on this database, but DBCC CHECKDB WITH DATA_PURITY, EXTENDED_LOGICAL_CHECKS ...
J. Mini's user avatar
  • 1,248
3 votes
3 answers
1k views

MariaDB Crashes Every Time Restarted

OSX Sonoma, OSX Monterey Latest MariaDB from Homebrew (11.4.2-MariaDB, client 15.2 for osx10.17 (x86_64)) MariaDB won't start every time I restart the brew service or restart the computer. I ...
Penyo's user avatar
  • 31
-1 votes
1 answer
119 views

Does anyone have a resolution for this: metadata is inconsistent error when restoring a backed up database to a higher level SQL server [closed]

The corruption does not appear to be in the user data tables but in the internal database system tables. However, when the database is restored, because a system table is corrupt, the database is not ...
Deanne R's user avatar
3 votes
1 answer
3k views

Finding all the index corruptions in the entire Postgres DB

There is DB with unknown amount of corrupted unique indexes. Currently I discover them one by one when I try REINDEX DATABASE CONCURRENTLY <db_name>, handle the specific duplication violation (...
KaliTheGreat's user avatar

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