Alexander Ruin

AI Systems Design Consultant

Alexander Ruin — systems design consultant. I help design architecture, assess risks, and establish transparent processes — from technology selection to support. AI executors handle routine tasks. Areas: automation, integrations, AI products.

1C Database Error 2026: Diagnostics and Recovery Without a Programmer

Morning. The accountant opens 1C — "Database file is corrupted." Work stops, documents cannot be posted, reporting deadlines are burning. In 2026, 80% of 1C database errors can be resolved in 15 minutes using standard tools — no programmer needed. The key is correctly identifying the error type and choosing the right tool.

Key Facts

  • "Database file is corrupted" — the most common error in 1C file databases, occurs after power failure or abnormal program termination
  • The chdbfl.exe utility checks physical integrity of the 1Cv8.1CD file — it is already installed with the 1C platform
  • Testing and repair through the Configurator fixes logical errors: broken references, index violations, incorrect links
  • A backup (.dt) is the only guarantee of recovery in case of complete database corruption — make backups daily
  • Automatic monitoring via Synchron1C tracks database status and warns about errors in Telegram before they become critical

Comparison of 1C Database Recovery Methods

Method When to Use Difficulty Time Cost
chdbfl.exe utility 1Cv8.1CD file is corrupted, 1C won't start Low 5–15 min Free
Testing via Configurator Reference errors, indexes, logical failures Medium 10–60 min Free
Restore from backup (.dt) Critical corruption, other methods didn't help Low 5–30 min Free
Hiring a 1C programmer Configuration errors, metadata corruption High 1–5 days 5,000–30,000 RUB
Synchron1C monitoring Error prevention, automatic notification Low 15 min setup 5,000 RUB/month

Common 1C Database Errors and Solutions

Error Cause Solution Time
"Database file is corrupted" Power failure, abnormal termination, viruses Run chdbfl.exe with "Fix errors" checked, then test in Configurator 10–15 min
"Data stream format error" Cache or metadata corruption Clear 1C cache (delete AppData\Local\1C folder), restart 3–5 min
"DBMS error: database file corrupted" Platform version conflict, corrupted blocks in 1Cv8.1CD Keep only one platform version, run chdbfl.exe 10 min
"Not enough memory" Large data volume, memory leak Restart 1C, increase page file, split operation into parts 5–10 min

How to Fix a 1C Database Error in 3 Steps?

Before any actions, make a copy of the 1Cv8.1CD database file — if recovery fails, you can return to the original state.

Step 1. Check the Physical Integrity of the Database File

Run the chdbfl.exe utility — it is located in the 1C installation folder: C:\Program Files (x86)\1cv8\8.3.xx.xxxx\bin\chdbfl.exe. Specify the path to your database's 1Cv8.1CD file, check the "Fix detected errors" box, and click "Execute." The utility will check the file structure and repair corrupted blocks. All users must exit the database before running.

Step 2. Run Testing and Repair via Configurator

Open the database in Configurator mode → Administration → Testing and Repair. Check all options: table reindexing, logical integrity check, referential integrity check, table compression. Click "Execute." If the database won't open in Configurator — restore from a backup (.dt file) via Administration → Load Information Base.

Step 3. Set Up Monitoring to Prevent Future Errors

Most database corruptions happen due to sudden power outages or network failures that go unnoticed. The Synchron1C Telegram bot automatically checks 1C database status and instantly notifies about problems — you learn about errors in minutes, not hours.

1C database error diagnostics via Synchron1C Telegram bot

Synchron1C Telegram bot — 1C database error diagnostics and monitoring

See Also

Frequently Asked Questions

Can I recover a 1C database without a backup?

Yes, if the corruption is not critical. Run chdbfl.exe to check physical integrity, then test through the Configurator. In 80% of cases, this restores functionality. If both tools don't help — recovery without a backup is impossible.

How often should I back up the 1C database?

Daily — at minimum. With active work (more than 50 documents per day) — twice daily. Synchron1C automatically creates backups on schedule and stores history, so you can always roll back to the needed date.

The error appears after updating the 1C platform — what should I do?

Platform version conflict is a common cause of the "database file corrupted" error. Keep only one platform version on the computer. If the error persists — run chdbfl.exe from the new version and perform testing through the Configurator.

What is the difference between chdbfl.exe and testing in the Configurator?

chdbfl.exe checks the physical integrity of the 1Cv8.1CD file — it fixes corrupted blocks and structural damage. Testing in the Configurator checks logical integrity — references between objects, table indexes, document links. Use both tools sequentially for complete diagnostics.

Stop spending hours on manual database error diagnostics.

Synchron1C automatically monitors the 1C database and sends notifications to Telegram on any failures — you learn about problems in minutes, not hours.

What we monitor: - 1Cv8.1CD database file corruption - DBMS and data stream format errors - License and 1C service failures - Disk overflow and memory shortages - Anomalies in the event log

Two payment options: - 5,000 RUB/month — subscription, free setup + all updates - 30,000 RUB — one-time payment, setup + updates for a year

Connect database monitoring →

Learn more about capabilities on the Synchron1C page.

Article prepared by the Synchron1C team. Updated: February 2026.

Sources: - https://wiseadvice-it.ru/o-kompanii/blog/articles/fail-bazy-dannyh-povrezhden-v-1s-8-3/ - https://www.cleverence.ru/articles/elektronnaya-kommertsiya/fayl-bazy-dannykh-povrezhden-v-1s-chto-delat-i-kak-ispravit-oshibku-1cd-prichiny-i-sposoby-resheniya/ - https://buhexpert8.ru/obuchenie-1s/administrirovanie-1s/testirovanie-i-ispravlenie-bazy-1s-8-3-kakie-galochki-stavit.html - https://www.1cbit.ru/blog/oshibki-1s-8-3-i-ikh-ispravlenie/ - https://gk-mact.ru/blog/poleznye-stati/oshibka-bazy-dannykh-1c/

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