2014-02-12
今天在用EM进行数据库备份时时发现oracle 10g R2下EM得一个报错，错误如下
：“java.lang.Exception:IOException in sending Request :: Connection refused:
connect”，遂通过查阅资料得到如下解决方案。
困惑了许久原以为是操作系统用户oracle没有权限造成的，经过多次检查oracle用户权限和密码都没错误。
查了许多资料发现是时区设置的问题。
oracle修改时区的方法：
停止emagent:
[oracle@localhost ~]$ emctl stop
agent
[oracle@localhost ~]$ emctl stop dbconsole
[oracle@localhost ~]$ export TZ=PRC
[oracle@localhost ~]$ emctl config
agent getTZ
[oracle@localhost ~]$ emctl config agent
updateTZ
[oracle@localhost ~]$ emctl start agent
[oracle@localhost ~]$
emctl start dbconsole
如果数据库dbconsole不能停止，提示Failed to shutdown DBConsole Gracefully
就要杀死 oc4j 进程
[oracle@localhost ~]$ ps -ef|grep oc4j
oracle 8844
8819 1 18:41 pts/2 00:00:15
/u01/app/oracle/product/10.2.0/db_1/jdk/bin/java -server -Xmx256M
-XX:MaxPermSize=96m -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40
-DORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
-Doracle.home=/u01/app/oracle/product/10.2.0/db_1/oc4j
-Doracle.oc4j.localhome=/u01/app/oracle/product/10.2.0/db_1/localhost_orcl/sysman
-DEMSTATE=/u01/app/oracle/product/10.2.0/db_1/localhost_orcl
-Doracle.j2ee.dont.use.memory.archive=true
-Djava.protocol.handler.pkgs=HTTPClient
-Doracle.security.jazn.config=/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/OC4J_DBConsole_localhost_orcl/config/jazn.xml
-Djava.security.policy=/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/OC4J_DBConsole_localhost_orcl/config/java2.policy
-Djava.security.properties=/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/home/config/jazn.security.props
-DEMDROOT=/u01/app/oracle/product/10.2.0/db_1/localhost_orcl
-Dsysman.md5password=true
-Drepapi.oracle.home=/u01/app/oracle/product/10.2.0/db_1
-Ddisable.checkForUpdate=true -Djava.awt.headless=true -jar
/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/home/oc4j.jar -config
/u01/app/oracle/product/10.2.0/db_1/oc4j/j2ee/OC4J_DBConsole_localhost_orcl/config/server.xml
oracle
11946 11915 0 18:57 pts/3 00:00:00 grep
oc4j
[oracle@localhost ~]$ kill 8844
进程杀死后执行停止dbconsole命令
[oracle@localhost ~]$emctl stop dbconsole