数据库突然连接不上了，检查之后可能是由于非正常关闭比如：断电之类造成的，启动报如下错误
ORA-00119: invalid specification for system parameter LOCAL_LISTENER
ORA-00132: syntax error or unresolved network name 'LISTENER_THDB'
检查$ORACLE_HOME/network/admin/tnsnames.ora中的network name和LISTENER_THDB是否一致即是否监听 改为一致重启即可。本例如下： LISTENER_THDB = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = zyz)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = LISTENER_THDB) ) )
