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Description

This error occurs when you attempt to set the `GTID_NEXT` session variable to `ANONYMOUS` while the `GTID_MODE` global variable is set to `ON`. MySQL's GTID_MODE=ON requires all transactions to have a Global Transaction Identifier, making explicit anonymous transactions disallowed. This often arises in replication environments where GTIDs are critical for data consistency.

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Error Message

@@SESSION.GTID_NEXT cannot be set to ANONYMOUS when @@GLOBAL.GTID_MODE = ON.

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Known Causes

4 known causes

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Explicitly Setting GTID_NEXT to ANONYMOUS

A user or application explicitly tried to set `@@SESSION.GTID_NEXT` to `ANONYMOUS` using a `SET` statement, conflicting with the global GTID_MODE.

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Running Legacy Code with GTID_MODE ON

Executing old scripts or applications that contain `SET GTID_NEXT = ANONYMOUS;` statements, which are incompatible with a globally enabled GTID_MODE.

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Replication Tool Misconfiguration

Some replication tools or utilities might attempt to set `GTID_NEXT` to `ANONYMOUS` during specific operations, clashing with the server's GTID enforcement.

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Manual Transaction Control Error

A database administrator or developer manually attempting to control transaction identifiers in a way that conflicts with the server's GTID enforcement policy.

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Solutions

3 solutions available

1. Temporarily Disable GTID for Session easy

Allows anonymous GTID setting for the current session without affecting global GTID mode.

1

Connect to your MySQL server using a client that allows session variable modification.

2

Before executing the command that triggers the error, set `@@SESSION.GTID_NEXT` to `ANONYMOUS`.

SET @@SESSION.GTID_NEXT = ANONYMOUS;

3

Now, execute the operation that previously failed (e.g., replication setup, certain DDL statements).

4

Once the operation is complete, it's good practice to reset `@@SESSION.GTID_NEXT` to its default or a specific GTID if needed, although it will reset on session disconnect.

SET @@SESSION.GTID_NEXT = '';

2. Set GTID_NEXT to a Specific GTID Value medium

Provides a valid GTID for the session instead of using ANONYMOUS when GTID_MODE is ON.

1

Identify the next expected GTID value for your replication stream or the operation you are performing. This often involves querying replication status or binary logs.

2

Connect to your MySQL server.

3

Set `@@SESSION.GTID_NEXT` to the specific GTID value. Replace `your_gtid_value` with the actual GTID.

SET @@SESSION.GTID_NEXT = 'your_gtid_value';
-- Example: SET @@SESSION.GTID_NEXT = 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee:123';

4

Execute the operation that requires setting `GTID_NEXT`.

5

After the operation, it's generally recommended to reset `@@SESSION.GTID_NEXT` to `''` or the next appropriate GTID if you are managing it manually.

SET @@SESSION.GTID_NEXT = '';

3. Temporarily Disable GTID Mode (for non-production or controlled environments) advanced

Disables GTID globally to allow anonymous GTID operations, but requires a server restart.

1

Locate your MySQL configuration file (e.g., `my.cnf`, `my.ini`).

2

Edit the configuration file to change `gtid_mode` from `ON` to `OFF`. This is typically found under the `[mysqld]` section.

[mysqld]
gtid_mode = OFF

3

Save the configuration file.

4

Restart your MySQL server for the changes to take effect.

sudo systemctl restart mysql  # Or your specific service management command

5

Perform the operation that requires anonymous GTID.

6

IMPORTANT: Revert the `gtid_mode` back to `ON` (or `ON_PERMISSIVE`/`ENFORCED`) in the configuration file and restart the MySQL server again to re-enable GTID mode.

[mysqld]
gtid_mode = ON

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Related Errors

5 related errors

MySQL Error 1782: Anonymous GTID Not Allowed