InnoDB Strict Mode

InnoDB strict mode is similar to SQL strict mode. When it is enabled, certain InnoDB warnings become errors instead.

Configuring InnoDB Strict Mode

MariaDB starting with 10.2.2

In MariaDB 10.2.2 and later, InnoDB strict mode is enabled by default.

InnoDB strict mode can be enabled or disabled by configuring the innodb_strict_mode server system variable.

Its global value can be changed dynamically with SET GLOBAL. For example:

SET GLOBAL innodb_strict_mode=ON;

Its value for the current session can also be changed dynamically with SET SESSION. For example:

SET SESSION innodb_strict_mode=ON;

It can also be set in a server option group in an option file prior to starting up the server. For example:

[mariadb]
...
innodb_strict_mode=ON

InnoDB Strict Mode Errors

Wrong Create Options

If InnoDB strict mode is enabled, and if a DDL statement is executed and invalid or conflicting table options are specified, then an error is raised. The error will only be a generic error that says the following:

ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

However, more details about the error can be found by executing SHOW WARNINGS.

For example, the error is raised in the following cases:

SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
KEY_BLOCK_SIZE=4
ROW_FORMAT=DYNAMIC;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: cannot specify ROW_FORMAT = DYNAMIC with KEY_BLOCK_SIZE.   |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
  • The KEY_BLOCK_SIZE table option is set to a non-zero value, but the configured value is larger than either 16 or the value of the innodb_page_size system variable, whichever is smaller.
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
KEY_BLOCK_SIZE=16;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: KEY_BLOCK_SIZE=16 cannot be larger than 8.                 |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET GLOBAL innodb_file_per_table=OFF;
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
KEY_BLOCK_SIZE=4;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: KEY_BLOCK_SIZE requires innodb_file_per_table.             |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
  • The KEY_BLOCK_SIZE table option is set to a non-zero value, but it is not set to one of the supported values: [1, 2, 4, 8, 16].
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
KEY_BLOCK_SIZE=5;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+-----------------------------------------------------------------------+
| Level   | Code | Message                                                               |
+---------+------+-----------------------------------------------------------------------+
| Warning | 1478 | InnoDB: invalid KEY_BLOCK_SIZE = 5. Valid values are [1, 2, 4, 8, 16] |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options")    |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB       |
+---------+------+-----------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET GLOBAL innodb_file_per_table=OFF;
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
ROW_FORMAT=COMPRESSED;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_per_table.      |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
ROW_FORMAT=PAGE;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: invalid ROW_FORMAT specifier.                              |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
ROW_FORMAT=COMPRESSED;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+-----------------------------------------------------------------------+
| Level   | Code | Message                                                               |
+---------+------+-----------------------------------------------------------------------+
| Warning | 1478 | InnoDB: Cannot create a COMPRESSED table when innodb_page_size > 16k. |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options")    |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB       |
+---------+------+-----------------------------------------------------------------------+
3 rows in set (0.00 sec)
SET GLOBAL innodb_file_per_table=OFF;
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
DATA DIRECTORY='/mariadb';
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: DATA DIRECTORY requires innodb_file_per_table.             |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TEMPORARY TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
DATA DIRECTORY='/mariadb';
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: DATA DIRECTORY cannot be used for TEMPORARY tables.        |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
INDEX DIRECTORY='/mariadb';
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: INDEX DIRECTORY is not supported                           |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
PAGE_COMPRESSED=1
ROW_FORMAT=COMPRESSED;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning |  140 | InnoDB: PAGE_COMPRESSED table can't have ROW_TYPE=COMPRESSED       |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET GLOBAL innodb_file_per_table=OFF;
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
PAGE_COMPRESSED=1;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning |  140 | InnoDB: PAGE_COMPRESSED requires innodb_file_per_table.            |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
PAGE_COMPRESSED=1
KEY_BLOCK_SIZE=4;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning |  140 | InnoDB: PAGE_COMPRESSED table can't have key_block_size            |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
PAGE_COMPRESSED=0
PAGE_COMPRESSION_LEVEL=9;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning |  140 | InnoDB: PAGE_COMPRESSION_LEVEL requires PAGE_COMPRESSED            |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.000 sec)
MariaDB until 10.2

In MariaDB 10.2 and before, the error is raised in the following additional cases:

SET GLOBAL innodb_file_format='Antelope';
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
KEY_BLOCK_SIZE=4;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning | 1478 | InnoDB: KEY_BLOCK_SIZE requires innodb_file_format > Antelope.     |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.00 sec)
SET GLOBAL innodb_file_format='Antelope';
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
ROW_FORMAT=COMPRESSED;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+-----------------------------------------------------------------------+
| Level   | Code | Message                                                               |
+---------+------+-----------------------------------------------------------------------+
| Warning | 1478 | InnoDB: ROW_FORMAT=COMPRESSED requires innodb_file_format > Antelope. |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options")    |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB       |
+---------+------+-----------------------------------------------------------------------+
3 rows in set (0.00 sec)
SET GLOBAL innodb_file_format='Antelope';
SET SESSION innodb_strict_mode=ON;

CREATE OR REPLACE TABLE tab (
   id int PRIMARY KEY,
   str varchar(50)
)
PAGE_COMPRESSED=1;
SHOW WARNINGS;
ERROR 1005 (HY000): Can't create table `db1`.`tab` (errno: 140 "Wrong create options")

SHOW WARNINGS;
+---------+------+--------------------------------------------------------------------+
| Level   | Code | Message                                                            |
+---------+------+--------------------------------------------------------------------+
| Warning |  140 | InnoDB: PAGE_COMPRESSED requires innodb_file_format > Antelope.    |
| Error   | 1005 | Can't create table `db1`.`tab` (errno: 140 "Wrong create options") |
| Warning | 1030 | Got error 140 "Wrong create options" from storage engine InnoDB    |
+---------+------+--------------------------------------------------------------------+
3 rows in set (0.00 sec)

COMPRESSED Row Format

If InnoDB strict mode is enabled, and if a table uses the COMPRESSED row format, and if the table's KEY_BLOCK_SIZE is too small to contain a row, then an error is returned by the statement.

Row Size Too Large

If InnoDB strict mode is enabled, and if a table exceeds its row format's maximum row size, then InnoDB will return an error.

ERROR 1118 (42000): Row size too large (> 8126). Changing some columns to 
TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.

See Troubleshooting Row Size Too Large Errors with InnoDB for more information.

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