mysqlrror 1205tate 41000
[warn ] 2015-04-19 09:00:00,760 method:org.hibernate.util.jdbcexceptionreporter.logexceptions(jdbcexceptionreporter.java:77)
sql error: 1205, sqlstate: 41000
[error] 2015-04-19 09:00:00,764 method:org.hibernate.util.jdbcexceptionreporter.logexceptions(jdbcexceptionreporter.java:78)
lock wait timeout exceeded; try restarting transaction
[error] 2015-04-19 09:00:00,765 method:com.opensymphony.xwork2.util.logging.commons.commonslogger.error(commonslogger.java:38)
exception occurred during processing request: could not execute update query
org.hibernate.exception.genericjdbcexception: could not execute update query
at org.hibernate.exception.sqlstateconverter.handlednonspecificexception(sqlstateconverter.java:103)
at org.hibernate.exception.sqlstateconverter.convert(sqlstateconverter.java:91)
at org.hibernate.exception.jdbcexceptionhelper.convert(jdbcexceptionhelper.java:43)
caused by: java.sql.sqlexception: lock wait timeout exceeded; try restarting transaction
at com.mysql.jdbc.sqlerror.createsqlexception(sqlerror.java:1073)
at com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4096)
at com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:4028)
at com.mysql.jdbc.mysqlio.sendcommand(mysqlio.java:2490)
at com.mysql.jdbc.mysqlio.sqlquerydirect(mysqlio.java:2651)
当时网站不能访问，tomcat的进程还在，重启tomcat就好了，最近每礼拜周末都来一次
求助各位大大这是咋回事儿