goldengate Director web页面不能正确识别到goldengate 实例的状态

在Admin tool中配置时，测试连接是通的，但在director web 页面显示是不通的状态，如下图：

在MOS上查到，Cannot Get Director To Recognize GoldenGate Instances--EOF from GGSCI - unexpected end of stream.Closing connection (Doc ID 1568098.1)

APPLIES TO:
Management Pack for Oracle GoldenGate - Version 11.2.1.0.5 and later
Oracle GoldenGate - Version 11.2.1.0.1 to 11.2.1.0.1 [Release 11.2]
Information in this document applies to any platform.
GOAL
When launching Director, it shows the instance is not running, but when we login to the source, all GoldenGate process are running.

When testing the connection with the Director Admin tool the following error is returned:

'Sending AllStat command...
GGSCI Connection error: EOF from GGSCI - unexpected end of stream.Closing connection...
Closed. All done.
'

SOLUTION
1. Logon to the Director Admin Tool, click on the Monitor Agent tab. Make sure value of Go Back Hours is 0, the default.
2. Logon to the Director Admin Tool, click on the Monitor Agent tab. The default for "Log Purge Hours" is 72 hours. Please
reduce it to your interested retention period
3. Stop the Director server
4. On the OGG instances being monitored

os> cd
os> cp ggserr.log ggserr.log.bak
os> cat /dev/null > ggserr.log

5. truncate the logentryb, statentryb tables directly from the DB. If needed you could take a export dump before truncating

6. Restart Director server

困扰大半年了，按4步处理，状态即显示正常（运行)了。