用户要求删除一个数据库的用户 GREENPASS,在删除的过程中,报错如下: drop user GREENPASS * ERROR at line 1: ORA-04021: timeout occurred while waiting to lock object NEWDR.HNDR_SMS_LOG 处理过程 1. 首先查询NEWDR.HNDR_SMS_LOG,这是一个'PROCEDURE': 2. 现在报错,不能对此对象进行锁定. 3. 看看什么会话在访问此对象: select B.SI…

编译某存储过程 ORA-04021 timeout occurred while waiting to lock object stringstringstringstringstring Cause: While waiting to lock a library object, a timeout is occurred. Action: Retry the operation later. 查找是否有用户类型的锁,即 TM                DML排队 TX          …

某个应用正在锁定该表或者包 表为 select b.SID,b.SERIAL#,c.SQL_TEXT from v$locked_object a, v$session b, v$sqlarea c where a.SESSION_ID = b.SID and b.SQL_ADDRESS = c.ADDRESS and c.sql_text like '%table_name%' 包为 select B.SID,b.USERNAME,b.MACHINE FROM V$ACCESS A, V$SE…

eclipse 增大junit内存配置 现象:eclipse在junit测试的时候出现如下错误 org.eclipse.jdi.TimeoutException:Timeout occurred while waiting for packet 1983.occurred 因为少量数据时测试时没有问题的,现在数据量大了后出现这个,感觉应该是jvm的内存不够. 解决办法: 把内存加大. Eclipse启动JUnit的时候设置的值大概是64M左右,而我加大内存后监控内存使用的结果表明全部的测试用例需…

今天发现线上数据库主从延迟严重: SELECT ag.name AS ag_name, ar.replica_server_name AS ag_replica_server, dr_state.database_id as database_id, dr_state.redo_queue_size, is_ag_replica_local = CASE THEN N'LOCAL' ELSE 'REMOTE' END , ag_replica_role = CASE WHEN ar_state.…

前些天某个SQL Server数据库的错误日志爆出如下错误: Timeout occurred while waiting for latch: class 'ACCESS_METHODS_DATASET_PARENT', id 00000009A5670C58, type 4, Task 0x0000000B655BC508 : 188, waittime 300, flags 0x1a, owning task 0x00000000170DC748. Continuing to wait.…

环境: 导入excel的时候,会根据路径,读取EXCEL的数据. 原因: 电脑上的防火墙关闭…

有时候在提交的时候,中间提交出错,导致有文件被lock,所以会报下面的错误: fatal: Unable to create ‘/msg/.git/index.lock’: File exists. If no other git process is currently running, this probably means a git process crashed in this repository earlier. Make sure no other git process is…

问题 MyEclipse for Spring在启动时,报如下错误:An internal error occurred during: 'Updating indexes'.Java heap space 解决办法 对于这种问题,可以采用禁止MyEclipse的updating indexes的方法来解决. Window -> Preferences -> Myeclipse -> Maven4Myeclipse,禁用Download repository index updates…

转自:http://liyanjie918.blog.163.com/blog/static/20227290201581143110105/ 在使用eclipse构建maven项目时,突然出现错误提示:An error occurred while filtering resources,在项目中到处都找不到哪里有问题,最后在国外网站找到解决办法: 右键项目-->maven-->update project      果然好使!good!…