# X_DB_LOCK_TIMEOUT

## Means

the statement waited past its `lock_timeout`

## Typical cause

SQLSTATE `55P03` — usually a DDL statement queued behind a long transaction holding the same table, which then blocks every reader behind *it*.

## Fix

`x db diagnostics --json \| jq '.data.blockers.rows[] \| {pid, blockedBy, blockerState}'` — end the `blockedBy` session or wait for it, then re-run the statement

[Entity and database](/error-codes#entity-and-database)