转载地址:https://blog.csdn.net/cicon/article/details/68068462##一.postgresql解决锁表--查询是否锁表了select oid from pg_class where relname='可能锁表了的表'select pid from pg_locks where relation='上面查出的oid'--如果查询到了结果,表示该表被锁 则需要释放锁定select pg_cancel_backend(上面查到的pid) 12345 二.
db2 查杀死锁进命令 db2 get snapshot for locks on (需要snapshot的访问权限) db2 list applications db2 "force application(8)" 在snapshot的第四段显示应用程序句柄为8的应用有锁存在,在其相应的锁定列表中显示锁定的表是US_CATALOG. 如果您确定是US_CATALOG表上发生了死锁,可以通过命令db2 "force application(8)"来杀掉该应用在数据库
文章出处:http://blog.csdn.net/aesop_wubo/article/details/8286215 问题描述 在做项目的过程中,由于写SQL太过随意,一不小心就抛了一个死锁异常,如下: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction at sun.refle
问题描述 在做项目的过程中,由于写SQL太过随意,一不小心就抛了一个死锁异常,如下: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction at sun.reflect.GeneratedConstructorAccessor247.newInstance(Unknown Source
之一: Oracle数据库操作中,我们有时会用到锁表查询以及解锁和kill进程等操作 (1)锁表查询的代码有以下的形式:select count(*) from v$locked_object;select * from v$locked_object;(2)查看哪个表被锁select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id =
OS: CentOS 6.3 DB:5.5.14 mysql> show processlist;+----+------+-----------+--------------------+---------+------+-------+------------------+| Id | User | Host | db | Command | Time | State | Info |+----+------+--------
CREATE FUNCTION del_ora_table() RETURNS void AS $$ DECLARE tmp ); DECLARE names CURSOR FOR select tablename from pg_tables where schemaname='public'; BEGIN FOR stmt IN names LOOP tmp := 'DROP TABLE '|| quote_ident(stmt.tablename) || ' CASCADE;'; RAIS