Database Errors

0XC0190028

STATUS_HANDLE_NO_LONGER_VALID: Fix the 0xC0190028 Handle Error

That STATUS_HANDLE_NO_LONGER_VALID (0xC0190028) crash usually means a file handle got closed mid-ope...

Advanced 👁 3 24m ago

WiredTiger error (Operation not permitted)

MongoDB WiredTiger error (Operation not permitted) after crash: 3 fixes

MongoDB won't start after a crash because WiredTiger can't create a lock file. Here's how to fix it ...

Beginner 👁 7 2d ago

FATAL: 53300

PostgreSQL FATAL: sorry, too many clients already — Fix Connection Exhaustion

PostgreSQL FATAL 53300 means max_connections is maxed out. Fix it by raising limits, fixing leaks, a...

Intermediate 👁 5 3d ago

null

Dealing with Database Connection Timeout: Fixes That Work

Database connection timeouts hit when the app can't reach the DB in time. I'll show you why it happe...

Intermediate 👁 10 5d ago

Table './mysql/innodb_table_stats' is marked as crashed

MySQL 8.0.34+ crash after upgrade: fix innodb_table_stats

MySQL 8.0.34+ crashes on restart after an upgrade when the innodb_table_stats table is corrupted. Fi...

Intermediate 👁 9 6d ago

0X8004E007

CONTEXT_E_OLDREF 0X8004E007 Fix for COM+ Database

This error pops up when a COM+ app tries to use stale transaction context after a database failover....

Intermediate 👁 14 6d ago

0X00000239

Fix Sync Required Error 0X00000239 Step by Step

This error appears when Windows can't sync your files or settings. I'll show you the fastest fixes f...

Beginner 👁 9 6d ago

ERROR 1040 (HY000): Too many connections

MySQL Error 1040: Too Many Connections — Real Fix

Too many connections means MySQL hit its connection cap. The real fix is raising max_connections, no...

Intermediate 👁 13 Sep 6, 2026

0X00001A2D

Fix ERROR_TRANSACTION_NOT_ACTIVE 0X00001A2D in Windows

Transaction handle went stale. Close the app or service that's holding it, then try again. Rollback ...

Intermediate 👁 9 Sep 6, 2026

0X00001B8B

Fix ERROR_CTX_SHADOW_DISABLED (0X00001B8B) Remote Control

Remote control fails with 0X00001B8B when shadowing is off in RDS settings or Group Policy. Quick fi...

Intermediate 👁 13 Sep 6, 2026

Error 128

SQL Server 128: Severe Error on Current Command – Real Fixes

SQL Server error 128 (severity 20) kills your query mid-run. Usually a connection or memory issue. H...

Intermediate 👁 11 Sep 5, 2026

connection refused: Is the server running on host "localhost" and accepting TCP/

Postgres connection refused on localhost:5432 — fix it now

Postgres won't connect? Most likely the service isn't running or is bound to the wrong socket. Here'...

Beginner 👁 8 Sep 4, 2026

ORA-01555

Fix ORA-01555: Snapshot Too Old Without Rewriting Your App

The ORA-01555 snapshot too old error hits long-running queries when undo data is overwritten. Here's...

Intermediate 👁 10 Sep 4, 2026

0X80320012

Fix Firebird FWP_E_TIMEOUT 0X80320012 Lock Timeout

Firebird transaction lock timeout on busy tables. Usually a missing index or long transaction holdin...

Intermediate 👁 10 Sep 4, 2026

0XC0000214

Fix STATUS_TRANSACTION_INVALID_ID 0XC0000214 on SQL Server

SQL Server or linked server throws 0XC0000214 when a transaction ID isn't recognized. Usually a stal...

Intermediate 👁 11 Sep 4, 2026

0X000003F6

Fix ERROR_REGISTRY_RECOVERED (0x3F6) on Windows Boot

Windows recovered a damaged registry hive using a backup log. You'll see this after a crash or power...

Intermediate 👁 13 Sep 4, 2026

MySQL Error 1213 (40001)

MySQL 1213 Deadlock: Fix by Making Transactions Short

Got MySQL error 1213? It's a deadlock. You fix it by keeping transactions short, using consistent in...

Intermediate 👁 14 Sep 4, 2026

duplicate key value violates unique constraint

pg_restore duplicate key errors: fix schema restore fails

pg_restore hits duplicate keys when the schema already has data. Drop the target schema first, or re...

Intermediate 👁 18 Sep 3, 2026

0XC019004B

Fix STATUS_FLOATED_SECTION (0XC019004B) Fast

I/O on a floated section object. Usually a TxF or memory-mapped file issue. Close the file handle or...

Intermediate 👁 13 Sep 3, 2026

0X80000018

Fix STATUS_RXACT_COMMIT_NECESSARY 0x80000018 in SQL Server

Error appears when a transaction is left dangling after a failover or client crash. You need to comm...

Intermediate 👁 15 Sep 2, 2026

ERROR 1045 (28000)

Fix MySQL 1045 Access Denied Error in Under 10 Minutes

MySQL error 1045 means bad credentials or a host mismatch. Here's the exact fix, the less obvious va...

Beginner 👁 13 Sep 1, 2026

0X00001AB8

Fix 0X00001AB8: Transaction Freeze Already in Progress

SQL Server throws this when a backup or snapshot hits a lock conflict. Quick fix: kill the blocking ...

Intermediate 👁 9 Sep 1, 2026

0X80092014

CRYPT_E_NOT_IN_REVOCATION_DATABASE: Fix 0x80092014 Now

Seen when Windows can't verify a cert's revocation status. Usually a mismatched CRL or offline OCSP....

Intermediate 👁 14 Aug 30, 2026

ERROR 1045 (28000)

MySQL 1045 Access Denied: Fix in 5 Minutes Flat

MySQL throws 1045 when auth fails. Usually a typo in user/host, a bad password, or the user's host m...

Beginner 👁 16 Aug 30, 2026