注：假定环境中其中一个的weblogic域名为cams，数据源为CAMSDB
（1）直接修改weblogic的数据源配置文件中密文密码为最新的明文密码【首次尝试，以失败告终，weblogic并没用将JDBC配置文件中的密码从明文自动转化成为密文，并遇到了新问题
进入JDBC配置文件所在路径
[cams@mymc1 jdbc]$ cd /home/cams/bea/middleware/user_projects/domains/cams/config/jdbc
打开配置文件并进行修改
[cams@mymc1 jdbc]$ vi CAMSDB-2211-jdbc.xml
将XXX中的密文密码改为明文密码
然后启动weblogic域，并查看启动日志
[cams@mymc1 jdbc]$ cd /home/cams/bea/middleware/user_projects/domains/cams
[cams@mymc1 jdbc]$ nohup ./startWebLogic.sh &
[cams@mymc1 jdbc]$ tail -f nohup.out
发现如下报错信息：
<2016-9-12 下午10时22分47秒 CST> <Error> <J2EE> <BEA-160197> <Unable to load descriptor java.net.URLClassLoader@6639c8c1/null of module null. The error is weblogic.descriptor.DescriptorException: Unmarshaller failed
at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:161)
at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:323)
at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:788)
at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:409)
at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:759)
at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:768)
at weblogic.jdbc.module.JDBCDeploymentHelper.getJDBCDataSourceBean(JDBCDeploymentHelper.java:186)
at weblogic.jdbc.module.JDBCDeploymentHelper.createJDBCDataSourceDescriptor(JDBCDeploymentHelper.java:51)
at weblogic.management.mbeans.custom.JDBCSystemResource.loadDescriptor(JDBCSystemResource.java:60)
at weblogic.management.mbeans.custom.ConfigurationExtension.getExtensionRoot(ConfigurationExtension.java:178)
at weblogic.management.mbeans.custom.JDBCSystemResource.getJDBCResource(JDBCSystemResource.java:45)
at weblogic.management.mbeans.custom.JDBCSystemResource._postCreate(JDBCSystemResource.java:50)
at weblogic.management.configuration.JDBCSystemResourceMBeanImpl._postCreate(JDBCSystemResourceMBeanImpl.java:355)
at weblogic.descriptor.internal.AbstractDescriptorBean._postCreate(AbstractDescriptorBean.java:670)
at weblogic.management.configuration.DomainMBeanImpl.setJDBCSystemResources(DomainMBeanImpl.java:11820)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.bea.staxb.runtime.internal.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:48)
at com.bea.staxb.runtime.internal.RuntimeBindingType$BeanRuntimeProperty.setValue(RuntimeBindingType.java:539)
at com.bea.staxb.runtime.internal.AttributeRuntimeBindingType$QNameRuntimeProperty.fillCollection(AttributeRuntimeBindingType.java:381)
at com.bea.staxb.runtime.internal.MultiIntermediary.getFinalValue(MultiIntermediary.java:52)
at com.bea.staxb.runtime.internal.AttributeRuntimeBindingType.getFinalObjectFromIntermediary(AttributeRuntimeBindingType.java:140)
at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalBindingType(UnmarshalResult.java:200)
at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalDocument(UnmarshalResult.java:169)
at com.bea.staxb.runtime.internal.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:65)
at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:150)
at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:323)
at weblogic.management.provider.internal.DescriptorManagerHelper.loadDescriptor(DescriptorManagerHelper.java:68)
at weblogic.management.provider.internal.RuntimeAccessImpl$IOHelperImpl.parseXML(RuntimeAccessImpl.java:690)
at weblogic.management.provider.internal.RuntimeAccessImpl.parseNewStyleConfig(RuntimeAccessImpl.java:270)
at weblogic.management.provider.internal.RuntimeAccessImpl.<init>(RuntimeAccessImpl.java:115)
at weblogic.management.provider.internal.RuntimeAccessService.start(RuntimeAccessService.java:41)
at weblogic.t3.srvr.ServerServicesManager.startService(ServerServicesManager.java:461)
at weblogic.t3.srvr.ServerServicesManager.startInStandbyState(ServerServicesManager.java:166)
at weblogic.t3.srvr.T3Srvr.initializeStandby(T3Srvr.java:881)
at weblogic.t3.srvr.T3Srvr.startup(T3Srvr.java:568)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:469)
at weblogic.Server.main(Server.java:71)
Caused by: com.bea.xml.XmlException: java.lang.IllegalArgumentException: In production mode, it's not allowed to set a clear text value to the property: PasswordEncrypted of JDBCDriverParamsBean
at com.bea.staxb.runtime.internal.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:54)
at com.bea.staxb.runtime.internal.RuntimeBindingType$BeanRuntimeProperty.setValue(RuntimeBindingType.java:539)
at com.bea.staxb.runtime.internal.ByNameRuntimeBindingType$ElementQNameProperty.fill(ByNameRuntimeBindingType.java:351)
at com.bea.staxb.runtime.internal.LiteralUnmarshalResult.extractAndFillElementProp(LiteralUnmarshalResult.java:159)
at com.bea.staxb.runtime.internal.ByNameUnmarshaller.deserializeContents(ByNameUnmarshaller.java:51)
at com.bea.staxb.runtime.internal.AttributeUnmarshaller.unmarshalIntoIntermediary(AttributeUnmarshaller.java:47)
at com.bea.staxb.runtime.internal.LiteralUnmarshalResult.unmarshalElementProperty(LiteralUnmarshalResult.java:184)
at com.bea.staxb.runtime.internal.LiteralUnmarshalResult.extractAndFillElementProp(LiteralUnmarshalResult.java:156)
at com.bea.staxb.runtime.internal.ByNameUnmarshaller.deserializeContents(ByNameUnmarshaller.java:51)
at com.bea.staxb.runtime.internal.AttributeUnmarshaller.unmarshalIntoIntermediary(AttributeUnmarshaller.java:47)
at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalBindingType(UnmarshalResult.java:199)
at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalDocument(UnmarshalResult.java:169)
at com.bea.staxb.runtime.internal.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:65)
at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:150)
... 39 more
Caused by: java.lang.IllegalArgumentException: In production mode, it's not allowed to set a clear text value to the property: PasswordEncrypted of JDBCDriverParamsBean
at weblogic.j2ee.descriptor.wl.JDBCDriverParamsBeanImpl.setPasswordEncrypted(JDBCDriverParamsBeanImpl.java:430)
at weblogic.j2ee.descriptor.wl.JDBCDriverParamsBeanImpl.setPasswordEncryptedAsString(JDBCDriverParamsBeanImpl.java:276)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.bea.staxb.runtime.internal.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:48)
... 52 more
.>