高分就救！war包发布的问题！

[Paul_Ni]

我在WebLogic8上发布一个war包，结果系统提示：
Exception:weblogic.management.ApplicationException: prepare failed for dm2k Module: dm2k Error: Could not load dm2k: weblogic.management.DeploymentException: [HTTP Session:100039]Replicated HTTP sessions specified for webapp: /dm2k, but clustering not enabled.

[Deployer:149033]preparing application dm2k on cc_server
[Deployer:149033]failed application dm2k on cc_server
[Deployer:149034]An exception occurred for task [Deployer:149026]Deploy application dm2k on cc_server.: Exception:weblogic.management.ApplicationException: prepare failed for dm2k Module: dm2k Error: Could not load dm2k: weblogic.management.DeploymentException: [HTTP Session:100039]Replicated HTTP sessions specified for webapp: /dm2k, but clustering not enabled. .

于是我把包里所有用到session的JSP全部去掉，WebLogic就不报错了，这到底是怎么一回事啊，那位高手救救我啊