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POconnection timeout when connecting to a remote postgresql database
 

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  1. POconnection timeout when connecting to a remote postgresql database
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    <p>I am facing this problem: I have a program that loops the following:</p> <ul> <li>connect to a postgresql database</li> <li>print a count number </li> <li>close the connection</li> </ul> <p>code is as follow:</p> <pre><code>int i = 0; while(true){ IConnection conn = ((ConnectionHelper)HelperFactory.getInstance().getHelper("ConnectionHelper")).getConnection("psql"); if(conn != null &amp;&amp; conn.connect()){ conn.close(); System.out.println(i++); } } </code></pre> <p>I connect to psql db by jdbc, something like this:</p> <pre><code>DriverManager.getConnection("jdbc:postgresql://" + host + ":5432/" + database, user, password); </code></pre> <p>the conn.connect() returns true if it can successfully connect to the database (tested, I can retrieve data from it)</p> <p>But i get the following result:</p> <p>0 1 2 . . . 3919 3920 3921 3922</p> <pre><code>org.postgresql.util.PSQLException: Connection refused. Check that the hostname and port are correct and that the postmaster is accepting TCP/IP connections. at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:136) at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:66) at org.postgresql.jdbc2.AbstractJdbc2Connection.&lt;init&gt;(AbstractJdbc2Connection.java:125) at org.postgresql.jdbc3.AbstractJdbc3Connection.&lt;init&gt;(AbstractJdbc3Connection.java:30) at org.postgresql.jdbc3g.AbstractJdbc3gConnection.&lt;init&gt;(AbstractJdbc3gConnection.java:22) at org.postgresql.jdbc4.AbstractJdbc4Connection.&lt;init&gt;(AbstractJdbc4Connection.java:30) at org.postgresql.jdbc4.Jdbc4Connection.&lt;init&gt;(Jdbc4Connection.java:24) at org.postgresql.Driver.makeConnection(Driver.java:393) at org.postgresql.Driver.connect(Driver.java:267) </code></pre> <p>at the last loop the program stuck at trying to connect to psql til timeout. Any help?</p>
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    1. USabalogh
    1. USuser415726
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    1. COCan you access it using other client like PGAdmin ? Server is rechable ?
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      1. USJigar Joshi
    2. COAny reason why you are opening and closing the connection on every iteration?
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      1. POconnection timeout when connecting to a remote postgresql database
      1. USVineet Reynolds
    3. CO@Jigar Joshi I can successfully query on the first 3xxx connection
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      1. USuser415726
 

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