1select @@global.lc_messages_dir;
2@@global.lc_messages_dir
3MYSQL_SHAREDIR/
4select @@session.lc_messages_dir;
5ERROR HY000: Variable 'lc_messages_dir' is a GLOBAL variable
6show global variables like 'lc_messages_dir';
7Variable_name	Value
8lc_messages_dir	MYSQL_SHAREDIR/
9show session variables like 'lc_messages_dir';
10Variable_name	Value
11lc_messages_dir	MYSQL_SHAREDIR/
12select * from information_schema.global_variables where variable_name='lc_messages_dir';
13VARIABLE_NAME	VARIABLE_VALUE
14LC_MESSAGES_DIR	MYSQL_SHAREDIR/
15select * from information_schema.session_variables where variable_name='lc_messages_dir';
16VARIABLE_NAME	VARIABLE_VALUE
17LC_MESSAGES_DIR	MYSQL_SHAREDIR/
18set global lc_messages_dir=1;
19ERROR HY000: Variable 'lc_messages_dir' is a read only variable
20set session lc_messages_dir=1;
21ERROR HY000: Variable 'lc_messages_dir' is a read only variable
22