Error 1205 (HY000): Lock wait timeout exceeded; try restarting transaction From InnoDB in MySQL Server (Doc ID 1296631.1)

Last updated on FEBRUARY 07, 2017

Applies to:

MySQL Server - Version 4.0 and later
Information in this document applies to any platform.
***Checked for relevance on28-MAR-2014Y***
***Checked for relevance on 30-JUN-2015Y***

Symptoms

A MySQL client's transaction fails with an error message:

 

Changes

Possible changes that could trigger this error:

  1. Slow write queries (due to inefficient SQL, data size getting much bigger, or other reasons)
  2. Decreasing the innodb_lock_wait_timeout variable size.
  3. Slow queries.
  4. Slow transactions with many faster queries, so that locks remain held for a long time.

Cause

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