Database Errors

MongoServerError

MongoServerError: bad auth — Fix Atlas After IP Whitelist Change

Getting 'bad auth' after changing your Atlas IP whitelist? It's usually a stale connection string or...

Intermediate 👁 43 Sep 30, 2026

ORA-01555

Fix ORA-01555: Snapshot Too Old in Oracle 19c

ORA-01555 snapshot too old happens when undo data needed for a consistent read gets overwritten. Bum...

Intermediate 👁 66 Sep 29, 2026

Google Search Console Database Errors: Real Fixes

Database errors in Google Search Console usually mean crawl or API hiccups, not your server. Here's ...

Intermediate 👁 45 Sep 29, 2026

ER_LOCK_DEADLOCK (1213)

MySQL Error 1213: Deadlock Found — Fix It Without Restarting

MySQL 1213 deadlock isn't a bug, it's InnoDB telling you two transactions grabbed rows in opposite o...

Intermediate 👁 136 Sep 29, 2026

0XC002004C

EPT_NT_CANT_CREATE 0xC002004C: Endpoint Mapper Database Entry Failed

RPC endpoint mapper can't write its database entry, usually because the HKLM\SOFTWARE\Microsoft\Rpc ...

Intermediate 👁 46 Sep 29, 2026

0X0000042F

Fix ERROR_INVALID_SERVICE_LOCK (0x0000042F) on Windows

ERROR_INVALID_SERVICE_LOCK means the Service Control Manager lost track of its own lock. A reboot us...

Intermediate 👁 72 Sep 28, 2026

0X00001AA8

ERROR_CANT_BREAK_TRANSACTIONAL_DEPENDENCY (0x00001AA8) Fix

You can't break a transactional dependency while the transaction's still open. Commit or roll back f...

Intermediate 👁 32 Sep 27, 2026

0X00001AB3

ERROR_TXF_METADATA_ALREADY_PRESENT 0X00001AB3: NTFS Fix

That TXF metadata error means NTFS thinks a transaction already owns the file. Here's how to clear i...

Intermediate 👁 28 Sep 26, 2026

0X80110475

COMADMIN_E_REGDB_ALREADYRUNNING 0x80110475: Fix the COM+ Registry Lock

That error means the COM+ catalog is already open, usually because an orphaned process didn't releas...

Intermediate 👁 40 Sep 25, 2026

0X8004E02B

Fix CO_E_DBERROR 0x8004E02B in Windows COM+ and MSDTC

CO_E_DBERROR hits when COM+ can't touch its catalog or the MSDTC log. Usually a permissions or corru...

Intermediate 👁 36 Sep 24, 2026

0XC0190052

STATUS_TRANSACTIONMANAGER_NOT_ONLINE (0XC0190052) Fix

Windows won't boot or a VM won't start because the transaction manager isn't online. Usually the KTM...

Intermediate 👁 38 Sep 22, 2026

0X00001A90

ERROR_TRANSACTIONAL_CONFLICT (0x00001A90): Fix Windows Transaction Name Collisions

This error means two processes tried to use the same NTFS transactional name at once. Kill the stale...

Advanced 👁 53 Sep 22, 2026

FATAL: remaining connection slots are reserved for non-replication superuser con

PostgreSQL FATAL: Remaining Connection Slots Are Reserved — Fix It Fast

You've hit max_connections and the reserved superuser slots are full. Here's how to get back in and ...

Intermediate 👁 98 Sep 21, 2026

0XC0190004

Fix STATUS_TM_INITIALIZATION_FAILED (0xC0190004) on Windows

0xC0190004 means the transaction manager can't start. Usually a corrupted log or disabled service. H...

Intermediate 👁 54 Sep 20, 2026

FATAL: could not write to file "pg_wal/xlogtemp.12345": No space left on device

PostgreSQL FATAL: could not write to pg_wal/xlogtemp — Disk Full Fix

Your Postgres disk is full and it can't write WAL. Free space fast or move pg_wal to another volume,...

Intermediate 👁 69 Sep 19, 2026

FATAL: sorry, too many clients already

PostgreSQL 'Too Many Clients Already' — Fix the Connection Limit

Postgres hit its max_connections cap and won't accept new clients. Raise the limit, kill idle sessio...

Intermediate 👁 48 Sep 19, 2026

0X00001A95

ERROR_TRANSACTIONS_UNSUPPORTED_REMOTE 0X00001A95: Real Fix

Windows error 0x1A95 hits when an app tries a transacted file op on a share that doesn't support it....

Intermediate 👁 38 Sep 19, 2026

0XC0190059

Fix STATUS_NO_LINK_TRACKING_IN_TRANSACTION (0xC0190059)

This error hits when a distributed link-tracking call runs inside an active transaction. Here's how ...

Advanced 👁 44 Sep 18, 2026

IllegalOperation: unsupported format characteristic: data

MongoDB Won't Start: Fix 'IllegalOperation: unsupported format characteristic: data'

That MongoDB startup error after a crash usually means a corrupted WiredTiger metadata file. You can...

Intermediate 👁 48 Sep 17, 2026

0XC0220012

STATUS_FWP_TIMEOUT (0XC0220012): Fix Transaction Lock Timeout

If you're seeing STATUS_FWP_TIMEOUT, a process is stuck waiting for a transaction lock. It's usually...

Intermediate 👁 38 Sep 17, 2026

40001

PostgreSQL 40001: Fix Serialization Failure in REPEATABLE READ

Hit 40001 in Postgres? Your REPEATABLE READ transaction lost a write race. Here's how to fix the cod...

Intermediate 👁 106 Sep 17, 2026

0X00001AAB

Fix ERROR_INDOUBT_TRANSACTIONS_EXIST (0x00001AAB) on Windows Server

This error shows up when Windows can't tell if a database transaction committed during a crash. Here...

Intermediate 👁 41 Sep 16, 2026

0X8004D10B

Fix XACT_E_DUPLICATE_TRANSID (0x8004D10B) in SQL Server and MSDTC

XACT_E_DUPLICATE_TRANSID hits when a transaction ID is reused — usually a retry bug, a stale MSDTC t...

Intermediate 👁 47 Sep 16, 2026

0X8004E031

CO_E_EXIT_TRANSACTION_SCOPE_NOT_CALLED (0x8004E031) Fix

You're seeing 0x8004E031 because a COM+ transaction ran the work but never called SetComplete or Set...

Intermediate 👁 38 Sep 15, 2026