Wie kann ich von einer App, die auf Bluemix bereitgestellt wird, auf die lokale DB2-Datenbank zugreifen?

Question

Ich habe ein Secure Gateway konfiguriert und versuche mich mit einer lokalen Datenbank zu verbinden. Ich erhalte folgende Fehlermeldung:

[err] com.ibm.db2.jcc.am.DisconnectNonTransientConnectionException: [jcc][t4][2030][11211][4.12.55] A communication error occurred during operations on the connection's underlying socket, socket input stream, 
6/3/2016 5:49:31 PM ERR App or socket output stream. Error location: Reply.fill() - insufficient data (-1). Message: Insufficient data. ERRORCODE=-4499, SQLSTATE=08001 
6/3/2016 5:49:31 PM ERR App [err] 
App [err] at com.ibm.db2.jcc.am.hd.a(hd.java:319) 
App [err] at com.ibm.db2.jcc.t4.a.a(a.java:461) 
App [err] at com.ibm.db2.jcc.t4.a.a(a.java:456) 
App [err] at com.ibm.db2.jcc.t4.z.b(z.java:242) 
App [err] at com.ibm.db2.jcc.t4.z.c(z.java:268) 
App [err] at com.ibm.db2.jcc.t4.z.c(z.java:381) 
App [err] at com.ibm.db2.jcc.t4.z.v(z.java:1149) 
App [err] at com.ibm.db2.jcc.t4.ab.a(ab.java:45) 
App [err] at com.ibm.db2.jcc.t4.b.n(b.java:1251) 
App [err] at com.ibm.db2.jcc.t4.b.b(b.java:1123) 
App [err] at com.ibm.db2.jcc.t4.b.d(b.java:717) 
App [err] at com.ibm.db2.jcc.t4.b.c(b.java:703) 
App [err] at com.ibm.db2.jcc.t4.b.a(b.java:391) 
App [err] at com.ibm.db2.jcc.t4.b.<init>(b.java:320) 
App [err] at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:214) 
App [err] at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:460) 
App [err] at java.sql.DriverManager.getConnection(Unknown Source) 
App [err] at wasdev.sample.servlet.DBServlet.getTargetDBConnection(DBServlet.java:127) 
App [err] at wasdev.sample.servlet.DBServlet.doGet(DBServlet.java:60) 
App [err] at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) 
App [err] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
App [err] at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1290) 
App [err] at [internal classes] 
App [err] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
App [err] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
App [err] at java.lang.Thread.run(Unknown Source) 

Answer 1

Dies ist kein Hinweis auf ein Problem mit Secure Gateway. Mit Blick auf den früheren Instanzen Fehler von anderen erfahren, ist es entweder ein Stale Anschlussproblem https://developer.ibm.com/answers/questions/10120/what-could-cause-a-connection-refused-to-sqldb-db2-after-some-time.html oder
Firewall Problem oder Netzwerkproblem wie in DB2 jdbc connection error Connection refused. ERRORCODE=-4499, SQLSTATE=08001 I am getting " Operation timed out. ERRORCODE=-4499, SQLSTATE=08001" connecting to remote DB2