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From Mark Shifman <mark.shif...@yale.edu>
Subject Re: [DBCP] BasicDataSource.locked on one machine and not another
Date Fri, 14 Jan 2011 22:40:53 GMT
Thanks Phil!

The workaround suggested on 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6483406,
adding  -Djava.net.preferIPv4Stack=true, worked.

mas

On 1/14/2011 2:59 PM, Phil Steitz wrote:
>
>
>
> On Jan 14, 2011, at 1:56 PM, Mark Shifman<mark.shifman@yale.edu>  wrote:
>
>> 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)
>>
> See
>
>
> Also obviously verify that there are no network issues.
>
> Phil
>> -- 
>> Mark Shifman
>> Yale Center for Medical Informatics
>> Phone (203)737-5219
>> mark.shifman@yale.edu
>>
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