commons-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mark Shifman <mark.shif...@yale.edu>
Subject [DBCP] BasicDataSource.locked on one machine and not another
Date Fri, 14 Jan 2011 18:56:33 GMT
I have a odd problem. the following code runs fine on one machine running
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode)

but hangs for several minutes/then runs on another computer running
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)

	public static void main(String[] args) throws SQLException {
		BasicDataSource ds = new BasicDataSource();
		ds.setDriverClassName("oracle.jdbc.OracleDriver");
		ds.setUsername(theUserName);
		ds.setPassword(thePassWord);
		ds.setUrl(theUrl);
		ds.setInitialSize(2);
		ds.setValidationQuery("SELECT 1 from dual");
		ds.setTestOnBorrow(true);
		Connection conn=ds.getConnection();
		//do something with connection
		System.err.println("done get conn");
	}
	
When I do a thread dump(below) I see that the BasicDataSource is locked.
I am using commons-pool-1.5.5.jar with commons-dbcp-1.4 and ojdbc6.jar on the two linux boxes.
What could be causing such behavior and how can I fix it.

"main" prio=10 tid=0x00000000407ba000 nid=0x6134 runnable [0x0000000040674000]
   java.lang.Thread.State: RUNNABLE
        at java.net.PlainSocketImpl.initProto(Native Method)
        at java.net.PlainSocketImpl.<clinit>(PlainSocketImpl.java:84)
        at java.net.Socket.setImpl(Socket.java:443)
        at java.net.Socket.<init>(Socket.java:364)
        at java.net.Socket.<init>(Socket.java:189)
        at oracle.net.nt.TcpNTAdapter.connect(TcpNTAdapter.java:127)
        at oracle.net.nt.ConnOption.connect(ConnOption.java:126)
        at oracle.net.nt.ConnStrategy.execute(ConnStrategy.java:306)
        at oracle.net.resolver.AddrResolution.resolveAndExecute(AddrResolution.java:421)
        at oracle.net.ns.NSProtocol.establishConnection(NSProtocol.java:630)
        at oracle.net.ns.NSProtocol.connect(NSProtocol.java:206)
        at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
        at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508)
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
        at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:38)
        at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:582)
        at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
        at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
        at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1388)
        - locked <0x00002aaadcfc8168> (a org.apache.commons.dbcp.BasicDataSource)
        at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:1044)
        at org.ycmi.ypedBilling.YpedBilling.main(YpedBilling.java:46)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)

-- 
 Mark Shifman
 Yale Center for Medical Informatics
 Phone (203)737-5219
 mark.shifman@yale.edu

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
For additional commands, e-mail: user-help@commons.apache.org


Mime
View raw message