服务报错，看看什么意思怎么解决

Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Lock wait timeout exceeded; try restarting transaction
The error may involve cn.com.chnsys.dtc.canal.dao.RealTimeEventDao.insertRecord-Inline
The error occurred while setting parameters
SQL: INSERT INTO real_time_event (eventId ,field1 ,protocolName ,field3 ,sjc ,field2 )VALUES(NEXTVAL('eventseq') ,? ,? ,? ,? ,? )
Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Lock wait timeout exceeded; try restarting transaction

Lock wait timeout exceeded; try restarting transaction的异常，错误提示的意思，是这条语句被锁住了，需要释放这个锁。