IBM CM 报错，求高人指点

公司现在用的CM版本是8.4

现在隔几天就会出现如下的错误信息，哪位大神给看下，不胜感激：

com.ibm.mm.sdk.common.DKDatastoreAccessError: DGL7333A: 因为 DriverManager.getConnection() 或等效 C++ 方法中出错，数据库连接已失败。异常消息为：[jcc][t4][10108][11232][3.53.95] 不允许用户标识长度为 0。 ERRORCODE=-4461, SQLSTATE=42815 (STATE) : ; [SERVER = ICMNEWDC, USERID = , SQL RC = -4461, SQL STATE = 42815]

        at com.ibm.mm.sdk.server.DKDatastoreICM.connect(DKDatastoreICM.java:2092)

        at suncfs.generaliservices.MigrateResourceDataService.storeResourceDataToCM(MigrateResourceDataService.java:286)

        at suncfs.generaliservices.MigrateResourceDataService.MigrateResourceData(MigrateResourceDataService.java:67)

        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 suncfs.etransserver.ScheduleServiceThread.run(ScheduleServiceThread.java:43)