（cognos 10.2.1）点击 IBM Cognos Connection ,在状态菜单栏->点击 系统，就会出现 java.lang.OutOfMemoryError: PermGen space

（cognos 10.2.1）【反应比较慢，时好时坏，不稳定，有bug】点击 IBM Cognos Connection ,在状态菜单栏--->点击 系统，就会出现 java.lang.OutOfMemoryError: PermGen space

OutOfMemoryError
 PermGen space

java.lang.OutOfMemoryError: PermGen space
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
    at java.lang.Class.getDeclaredMethod(Class.java:1935)
    at java.io.ObjectStreamClass.getPrivateMethod(ObjectStreamClass.java:1382)
    at java.io.ObjectStreamClass.access$1700(ObjectStreamClass.java:52)
    at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:438)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:413)
    at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:310)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1114)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1483)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:330)
    at java.util.LinkedList.writeObject(LinkedList.java:943)
    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 java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)
    at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1469)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1400)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1158)
    at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1518)
    at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:422)
    at com.cognos.validator.document.DocumentObject.writeObject(DocumentObject.java:246)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)