java.sql.SQLException

IO Error: The Network Adapter could not establish the connection

Samebug tips9

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.

Check if ip adress is correct, if the port is correct, and if the server is up and running and waiting for connections. Also, check if there's no firewall blocking you and if your internet connection is working.


rafaelrafael

Don't give up yet. Our experts can help. Paste your full stack trace to get a solution.

Solutions on the web5776

  • Stack trace

    • java.sql.SQLException: IO Error: The Network Adapter could not establish the connection at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:419) at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:536) at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521) at java.sql.DriverManager.getConnection(DriverManager.java:582) at java.sql.DriverManager.getConnection(DriverManager.java:185) at com.jolbox.bonecp.BoneCP.obtainRawInternalConnection(BoneCP.java:256) at com.jolbox.bonecp.ConnectionHandle.obtainInternalConnection(ConnectionHandle.java:211) at com.jolbox.bonecp.ConnectionHandle.<init>(ConnectionHandle.java:170) at com.jolbox.bonecp.PoolWatchThread.fillConnections(PoolWatchThread.java:101) at com.jolbox.bonecp.PoolWatchThread.run(PoolWatchThread.java:82) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:375) at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:422) at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:678) at oracle.net.ns.NSProtocol.connect(NSProtocol.java:238) at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1054) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:308) ... 14 more Caused by: java.net.ConnectException: Connection timed out: connect at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:529) at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:201) at oracle.net.nt.ConnOption.connect(ConnOption.java:123) at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:353) ... 19 more

    Write tip

    You have a different solution? A short tip here would help you and many other users who saw this issue last week.

    Users with the same issue

    Unknown visitor
    Unknown visitorOnce,
    Unknown visitor
    Unknown visitorOnce,
    magicanmagican
    2 times, last one
    ivanszkypeterivanszkypeter
    17 times, last one
    CasperCasper
    Once,
    483 more bugmates