我正在尝试运行多个连接到数据库的进程，执行一些操作然后完成它。
我的代码看起来像这样
Java使用Process
调用脚本Runtime r = Runtime.getRuntime();
Process p = r.exec(expectPath+" "+expectScriptPath+" "+ticket);
SessionLogger sysout = new SessionLogger(logger,p.getInputStream());
sysout.start();
SessionLogger syserr = new SessionLogger(logger,p.getErrorStream());
syserr.start();
try {
return p.waitFor();
} catch (InterruptedException e) {
log.error(e.getMessage(),e);
return -1;
}
TCL脚本调用java方法
set inputData [ java::call myPackage.TCLDriverWrapper pullNextInputData $ticket ]
Java代码创建jdbc连接，执行简单查询并关闭连接
private static LegacyDriverTaskInputData pullNextInputData(String token) throws Exception {
Connection conn = null;
try{
conn = new TCLDriverWrapper().getConnection();
QueryRunner run = new QueryRunner();
ResultSetHandler<LegacyDriverTaskInputData> rsh = new BeanHandler<LegacyDriverTaskInputData>(LegacyDriverTaskInputData.class);
LegacyDriverTaskInputData inputData = run.query(conn,"select * from mytable where id = ?",rsh,Long.valueOf(token));
return inputData;
} catch (ClassNotFoundException e) {
e.printStackTrace();
throw e;
} catch (SQLException e) {
e.printStackTrace();
throw e;
} finally {
DbUtils.close(conn);
}
}
，其中
private Connection getConnection() throws Exception{
String driver = "...";
if (driver == null || driver.trim().length()==0) {
throw new Exception("...");
}
Class.forName(driver);
Properties props = new Properties();
props.put("user", MyConfiguration.getProperty("javawrapper.user"));
props.put("password", MyConfiguration.getProperty("javawrapper.password"));
return DriverManager.getConnection(MyConfiguration.getProperty("javawrapper.jdbc"), props);
}
我注意到的一件事是，当我一次只触发一个进程时，一切正常。
但是，如果我尝试同时运行3个进程（每个进程都在自己的线程中），我会收到类似的错误
Processing java.sql.SQLRecoverableException: IO Error: Connection reset
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:498)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:169)
at (...)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at oracle.net.ns.DataPacket.send(DataPacket.java:210)
at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:230)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:321)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:268)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:190)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:107)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:124)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:80)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1137)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:350)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:227)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOSESSKEY(T4CTTIoauthenticate.java:407)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:416)
... 19 more
java.sql.SQLRecoverableException: IO Error: Connection reset
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:498)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:553)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:254)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:528)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:169)
(...)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at tcl.lang.reflect.PkgInvoker.invokeMethod(PkgInvoker.java:128)
at tcl.lang.JavaInvoke.call(JavaInvoke.java:304)
at tcl.lang.JavaInvoke.callStaticMethod(JavaInvoke.java:217)
at tcl.lang.JavaCallCmd.cmdProc(JavaCallCmd.java:74)
at tcl.lang.AutoloadStub.cmdProc(Extension.java:119)
at tcl.lang.Interp.callCommand(Interp.java:1266)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at oracle.net.ns.DataPacket.send(DataPacket.java:210)
at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:230)
at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:321)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:268)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:190)
at oracle.net.ns.NetInputStream.read(NetInputStream.java:107)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:124)
at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:80)
at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1137)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:350)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:227)
at oracle.jdbc.driver.T4CTTIoauthenticate.doOSESSKEY(T4CTTIoauthenticate.java:407)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:416)
... 19 more
java.sql.SQLRecoverableException: IO Error: Connection reset
在我看来，有些东西没有正确地解除分配对象，但我不确定它是否在java端，或者它是否在TCL端。另外，我不知道TCL是否为不同的进程共享对象（对我来说没有意义）。
欢迎任何线索。
代码在Linux中运行。