My programm connect to MYSQL server(4.1.12), set it's character set by "set NAMES gbk",
the variables when client programm started is character_set_client gbk character_set_connection gbk character_set_database gbk character_set_results gbk character_set_server gbk after a long while, like one night, I found the client character set have been changed to latin, character_set_client latin1 character_set_connection latin1 character_set_database gbk character_set_results latin1 character_set_server gbk it seems related to some "timeout" value, the wait_timeout and interative_timeout is 28800(8 hours). I tested same program with MySQL 4.1.7, the connection was disconnnected by server since wait_timeout was set to 8 hours. why the characoter set would be changed with MYSQL 4.1.12? My programm use MYSQL C API. MySQL setting : My.cnf [mysqld] socket=/var/lib/mysql/mysql.sock # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 default-character-set=gbk [mysql.server] user=mysql default-character-set=gbk default-collation=gbk_bin [mysqld_safe] err-log=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid default-character-set=gbk [mysql] default-character-set=gbk Thanks Hanson
