MySQL Error 1770 ER_GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL: Causes and Fixes

August 7, 2025

<p>MySQL raises error 1770 when you try to set @@SESSION.GTID_NEXT to AUTOMATIC while @@SESSION.GTID_NEXT_LIST still holds a non NULL value.</p>

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What is MySQL error 1770 ER_GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL?

<p>MySQL Error 1770 ER_GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL happens when @@SESSION.GTID_NEXT is switched to AUTOMATIC while GTID_NEXT_LIST is not NULL. Finish or clear the multi-transaction GTID list, then set GTID_NEXT back to AUTOMATIC to resolve the issue.</p>

Error Highlights

Typical Error Message

The system variable @@SESSION.GTID_NEXT cannot be

Error Type

Replication Error

Language

MySQL

Symbol

ER_GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL

Error Code

1770

SQL State

HY000

Explanation

Example H2

Example H3

What does MySQL error 1770 ER_GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL mean?

The server refuses to change @@SESSION.GTID_NEXT to AUTOMATIC because @@SESSION.GTID_NEXT_LIST still contains a predefined set of GTIDs. MySQL expects you to consume or discard that list before returning to automatic GTID assignment.

When does this error appear?

The error surfaces during manual GTID based data loading, point-in-time recovery, or replication troubleshooting sessions where you explicitly set GTID_NEXT or GTID_NEXT_LIST and later attempt to revert to normal operation.

Why is fixing it important?

Leaving a session stuck in manual GTID mode blocks subsequent statements, halts replication maintenance, and can delay recovery tasks. Clearing the condition restores seamless GTID generation and prevents inconsistencies.

Common Causes

Using SET GTID_NEXT_LIST without resetting

A previously executed SET @@SESSION.GTID_NEXT_LIST introduced a list of GTIDs that remains unconsumed.

Interrupted multi-transaction import

An import routine that manually controls GTIDs aborted before executing SET GTID_NEXT='AUTOMATIC'.

Script logic error

Automation scripts switched GTID modes out of order, sending SET GTID_NEXT='AUTOMATIC' before clearing GTID_NEXT_LIST.

Session mix-up in client tools

Developers manually ran commands in the same connection, forgetting that GTID_NEXT_LIST persists for the full session.

Related Errors

MySQL Error 1830 ER_GTID_NEXT_LIST_TOO_LONG

Raised when the GTID_NEXT_LIST string exceeds the server variable limit.

MySQL Error 1783 ER_GTID_NEXT_TYPE_UNDEFINED_GROUP

Occurs if GTID_NEXT is set to UUID:NUMBER but the UUID is not in gtid_executed.

MySQL Error 1790 ER_GTID_NEXT_TYPE_UNDEFINED

Happens when GTID_NEXT is assigned an unsupported value.

FAQs

Can I simply disconnect to clear GTID_NEXT_LIST?

Yes. Closing the session removes GTID_NEXT_LIST, but any uncommitted work is lost. Clearing it explicitly is safer.

Does this error affect global replication settings?

No. It only impacts the current session. Other connections continue using automatic GTID assignment.

Will RESET MASTER fix the error?

RESET MASTER clears all binary logs and GTID history. It is excessive and should not be used just to resolve a session level GTID_NEXT conflict.

How does Galaxy help prevent this error?

Galaxy highlights session variables in its SQL editor and offers snippets that correctly switch GTID modes, reducing the chance of leaving GTID_NEXT_LIST non NULL.

Start Querying with the Modern SQL Editor Today!