Server System Variables • large_page_size • last_insert_id • lc_messages • lc_messages_dir • lc_time_names 816 The directory where error messages are located. The server uses the value together with the value of lc_messages  to produce the location for the error message file. See Section 10.12, “Setting the Error Message Language” . The locale to use for error messages. The default is  en_US . The server converts the argument to a language name and combines it with the value of  lc_messages_dir  to produce the location for the error message file. See Section 10.12, “Setting the Error Message Language” . The value to be returned from  LAST_INSERT_ID() . This is stored in the binary log when you use LAST_INSERT_ID()  in a statement that updates a table. Setting this variable does not update the value returned by the  mysql_insert_id() C API function. If large page support is enabled, this shows the size of memory pages. Large memory pages are supported only on Linux; on other platforms, the value of this variable is always 0. See Section 8.12.3.2, “Enabling Large Page Support” . System Variable large_page_size Scope Global Dynamic No SET_VAR  Hint Applies No Type Integer Default Value 0 Command-Line Format --lc-messages=name System Variable lc_messages Scope Global, Session Dynamic Yes SET_VAR  Hint Applies No Type String Default Value en_US Command-Line Format --lc-messages-dir=dir_name System Variable lc_messages_dir Scope Global Dynamic No SET_VAR  Hint Applies No Type Directory name Command-Line Format --lc-time-names=value