[转]em登录后，有时断有时续。怎么解决？

success

问：

solaris9 下安装10g。
安装后，正常运行了快一个月。
但是从上周末开始，发现em登录后，能够正常操作，但是过了不到10分钟，em就down了。
$emctl start dbconsole后
显示

Oracle EntERPrise Manager 10g Database Control Release 10.1.0.2.0
Copyright (c) 1996, 2004 Oracle Corporation. All rights reserved.
http://xxtjdb:5500/em/console/aboutApplication
Killed
Starting Oracle Enterprise Manager 10g Database Control ....Killed
started.
------------------------------------------------------------------
Logs are generated in directory /u01/app/oracle/product/10.1.0/db_3/xxtjdb_tjdb/sysman/log

但是，马上输入emctl status dbconsole命令后，显示：
Oracle Enterprise Manager 10g Database Control Release 10.1.0.2.0
Copyright (c) 1996, 2004 Oracle Corporation. All rights reserved.
http://xxtjdb:5500/em/console/aboutApplication
Killed
Killed
EM Daemon is not running.
------------------------------------------------------------------
Logs are generated in directory /u01/app/oracle/product/10.1.0/db_3/xxtjdb_tjdb/sysman/log

此时，em好用。

过了不到10分钟，就连接不上了。
log中，出现如下问题：
2004-08-16 14:07:59,069 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ias.ias.IASIntegration
2004-08-16 14:07:59,392 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.eml.target.slb.common.SLBIntegration
2004-08-16 14:07:59,558 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.eml.ssl.intg.SSLIntegration
2004-08-16 14:07:59,680 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.tip.oem.central.domain.ProcessConnectDomainIntg
2004-08-16 14:07:59,689 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.tip.oem.central.instance.ProcessConnectInstanceIntg
2004-08-16 14:07:59,694 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.webdb.admin.em.PortalIntegration
2004-08-16 14:07:59,699 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.webdb.admin.em.SSOIntegration
2004-08-16 14:07:59,704 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.reports.em.RepIntg
2004-08-16 14:07:59,716 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsEmailIntegration
2004-08-16 14:07:59,731 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsOidIntegration
2004-08-16 14:07:59,736 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsOvfIntegration
2004-08-16 14:07:59,741 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsWebconfIntegration
2004-08-16 14:07:59,746 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsWirelessIntg
2004-08-16 14:07:59,751 [Orion Launcher] ERROR app.ContextInitializer contextInitialized.256 - Integ
ration Class not found: oracle.sysman.ocs.mntr.target.OcsCalGrpIntegration

以前没有出现过类似情况。现如何解决？
以前重新启动数据库的时候，没有关闭em，启动后，再重新启动em，不知道是否有影响？

答：

1. Log文件中的有些提示是正常的,因为你提到的10G中的EM 是
DB Control, 它只是GC control 的standalone 版本,而log 文件中
报错的那些类属于其他的Product(IAS等), DB control 的环境
是没有这些class的;

当然,有些日志中包含的信息可能是Bug导致.

2. 正常的启动关闭DB Control 的顺序:
启动:
启动监听器(lsnrctl start)
启动数据库
启动dbconsole服务

关闭:
顺序与前面的正好相反,建议每次都显式的执行 emctl
stop dbconsole 命令来停掉dbconsole服务,以保证资源
的回收. 最后在OS下检查相关的进程是否都已中止..