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  1. ,
    Expert tip

    Check if your server (or a proxy server) is not going up and down. There might be something between a proxy and a client sending intermittent requests to non-functioning hosts as well. There might as well be too many requests in a short amount of time.

  2. ,
    Expert tip

    Check if your server (or a proxy server) is not going up and down. There might be something between a proxy and a client sending intermittent requests to non-functioning hosts as well. There might as well be too many requests in a short amount of time.

Solutions on the web

via Stack Overflow by Emilio Diana
, 1 year ago
[jcc][t4][2043][11550][4.14.146] Eccezione java.net.ConnectException: errore durante l'apertura del socket sul server /xxx.xxx.xxx.xxx sulla porta 50.000 con il messaggio Connection timed out: connect. ERRORCODE=-4499, SQLSTATE=08001
via Stack Overflow by Kishore Dubey
, 3 months ago
[jcc][t4][2043][11550][4.14.113] Exception java.net.ConnectException: Error opening socket to server adc1db2d.ipc.us.aexp.com/148.171.100.10 on port 17,330 with message: Connection refused: connect. ERRORCODE=-4499, SQLSTATE=08001
java.net.ConnectException: Connection timed out: connect	at java.net.DualStackPlainSocketImpl.connect0(Native Method)	at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)	at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)	at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)	at java.net.AbstractPlainSocketImpl.connect(Unknown Source)	at java.net.PlainSocketImpl.connect(Unknown Source)	at java.net.SocksSocketImpl.connect(Unknown Source)	at java.net.Socket.connect(Unknown Source)	at com.ibm.db2.jcc.t4.w.run(w.java:49)	at java.security.AccessController.doPrivileged(Native Method)	at com.ibm.db2.jcc.t4.wb.a(wb.java:420)	at com.ibm.db2.jcc.t4.wb.(wb.java:93)	at com.ibm.db2.jcc.t4.a.b(a.java:354)	at com.ibm.db2.jcc.t4.b.newAgent_(b.java:2030)	at com.ibm.db2.jcc.am.Connection.initConnection(Connection.java:732)	at com.ibm.db2.jcc.am.Connection.(Connection.java:680)	at com.ibm.db2.jcc.t4.b.(b.java:334)	at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:233)	at com.ibm.db2.jcc.DB2SimpleDataSource.getConnection(DB2SimpleDataSource.java:199)	at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:475)	at com.ibm.db2.jcc.DB2Driver.connect(DB2Driver.java:116)	at java.sql.DriverManager.getConnection(Unknown Source)	at java.sql.DriverManager.getConnection(Unknown Source)	at main.TestDb2.main(TestDb2.java:20)