log error"No connection could be made because the target machine actively refused it."

Sorry, once again.

Hello, everyone

My software environment is the following:

---------------------------------------------------------------------------------------------------------------------------------------

Win7 64bit Janpanese

postgresql-9.0.11-1-windows-x64.exe

postgresql-9.0-801.jdbc4.jar

Seasar2 (a j2ee framework popular in Japan, including DI ,AOP, Struts, O/R Mapper,etc.)  

----------------------------------------------------------------------------------------------------------------------------------------

When I used the O/R Mapper of Seasar2 to do a simplest insert SQL statement,

I saw the record had been inserted into DB,

But in the log file of C:\Program Files\PostgreSQL\9.0\data\pg_log,

2013-05-20 10:48:01 HKT postgres changdb LOG:  クライアントからデータを受信できませんでした: No connection could be made because the target machine actively refused it.

Sorry, it is in Japanese, and I will translate it into English.

クライアントからデータを受信できませんでした  ->  could not receive data from client

クライアント接続に想定外のEOFがありました  ->  unexpected EOF on client connection

In fact, whenever I execute any insert/update SQL statement, it always appears.

My customer asked that it must be made to disappear.

I have googled, but can’t find any useful advice.

I have shutdown the firewall of Win7 and anti-virus software in My PC. But This is no use.

This page said that these error reports when the connections are closed uncleanly, without a proper backend close message.

http://grokbase.com/t/postgresql/pgsql-general/1137bke7ew/unexpected-eof-on-client-connection-vs-9-0-3

I think it is the most possible reason. But I don’t know how to fix it.

Anyone can help me. Please.

Thanks

Harry Chang

Java Sr. Engineer