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POSQLNonTransientConnectionException: No current connection, in my application while interacting with Derby database
 

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    <p>I implemented derby data base in my application to save my data,and I am getting this exception in retrieval of result set form <code>select</code> query in Derby database. To establish the connection I use connection string as:</p> <p>I establish connection using this method:</p> <p>I declare this method in class <em>Connection.java</em>:</p> <pre><code> public synchronized Connection createConnection() throws Exception { Connection rescon = null; try { if (this.dbuser == null) { rescon = DriverManager.getConnection(this.URI + ";create=true"); } else { rescon = DriverManager.getConnection(this.URI + ";create=true", this.dbuser, this.dbpass); } // new connection in connection pool created } catch (SQLException e) { final String stackNum = Utility.exceptionHandler(e); throw new Exception("Exception get during Connection - " + e.getMessage()); } return rescon; } </code></pre> <p>I used this method as and create connection, create connection during intraction using string:</p> <pre><code>private Connection objConnection = null; objConnectionpool = new Connection("jdbc:derby:" + Folder.getAbsolutePath() + "/myapplication" + sFileName, null, null, "org.apache.derby.jdbc.EmbeddedDriver"); objConnection = objConnectionpool.createNewConnection(); </code></pre> <p>I am getting exception in execution of query:</p> <pre><code>sQuery = "select value,reason from " + TableNm + " where fileName ='" + FileName + "' AND type='"+Type+"' AND status ='remaining'"; </code></pre> <p>during processing and interaction with Derby database we might update as well get the data from the database:</p> <p>I perform setAutoCommit as false before inserting in the database</p> <pre><code>objConnection.setAutoCommit(false); </code></pre> <p>after insertion:</p> <pre><code>ps = objConnection.prepareStatement(sQuery); rs = ps.executeQuery(); objConnection.commit(); objConnection.setAutoCommit(true); </code></pre> <p>I am getting Exception as </p> <pre><code>java.sql.SQLNonTransientConnectionException: No current connection. at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source) at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source) at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source) at org.apache.derby.impl.jdbc.Util.noCurrentConnection(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.checkIfClosed(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.setupContextStack(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source) at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source) at com.myapplication.c.aw.a(Unknown Source) at com.myapplication.c.aw.a(Unknown Source) at com.myapplication.main.avd.run(Unknown Source) Caused by: java.sql.SQLException: No current connection. at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source) at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source) ... 11 more </code></pre>
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