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system-variable: indicate that max_allowed_packet is ready only in the session scope (#15946) #15954

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1 change: 1 addition & 0 deletions system-variables.md
Original file line number Diff line number Diff line change
Expand Up @@ -565,6 +565,7 @@ This variable is an alias for [`last_insert_id`](#last_insert_id).
- Range: `[1024, 1073741824]`
- The value should be an integer multiple of 1024. If the value is not divisible by 1024, a warning will be prompted and the value will be rounded down. For example, when the value is set to 1025, the actual value in TiDB is 1024.
- The maximum packet size allowed by the server and the client in one transmission of packets.
- In the `SESSION` scope, this variable is read-only.
- This variable is compatible with MySQL.

### password_history <span class="version-mark">New in v6.5.0</span>
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