无法使用 Hibernate 连接到 MS SQL Server 2008 数据库实例

Question

我正在尝试使用 Hibernate 连接到 MSSQL Server。当我尝试连接到“正常”数据库时，我编写的代码还可以，但是对于一个具有实例的数据库，我总是遇到异常。

错误是：

2020-03-06 15:07:01.755  WARN  com.mchange.v2.async.ThreadPoolAsynchronousRunner: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@12fa2433 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
2020-03-06 15:07:01.758  WARN  com.mchange.v2.async.ThreadPoolAsynchronousRunner: com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@12fa2433 -- APPARENT DEADLOCK!!! Complete Status: 
    Managed Threads: 3
    Active Threads: 3
    Active Tasks: 
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@5d00c227
            on thread: C3P0PooledConnectionPoolManager[identityToken->2sk2t6a81cvnu23110fpe1|11389053]-HelperThread-#0
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@1e98ae08
            on thread: C3P0PooledConnectionPoolManager[identityToken->2sk2t6a81cvnu23110fpe1|11389053]-HelperThread-#2
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@6c17f8ef
            on thread: C3P0PooledConnectionPoolManager[identityToken->2sk2t6a81cvnu23110fpe1|11389053]-HelperThread-#1
    Pending Tasks: 
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@6665ca79
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask@3d2f3d68
Pool thread stack traces:
    Thread[C3P0PooledConnectionPoolManager[identityToken->2sk2t6a81cvnu23110fpe1|11389053]-HelperThread-#0,5,main]
        java.lang.Thread.sleep(Native Method)
        com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:2336)
        com.microsoft.sqlserver.jdbc.SQLServerConnection.connectInternal(SQLServerConnection.java:2067)
        com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:1204)
        com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:825)
        com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
        com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
        com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
        com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
        com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
        com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
        com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
        com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
        com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)

使用相同的登录密码，我可以连接到数据库，但不能以编程方式，即使用 sqlcmd。

我如何创建连接：

    public synchronized static SessionFactory getSessionFactory(Logger log, DbServer dbServer, String dbName) {

        String url = String.format("jdbc:sqlserver://%s:%d;databaseName=%s", dbServer.getServerName(), dbServer.getPort(), dbName);

        return new Configuration().configure()
            .setProperty("hibernate.connection.driver_class", "com.microsoft.sqlserver.jdbc.SQLServerDriver")
            .setProperty("hibernate.default_schema", "dbo")
            .setProperty("hibernate.dialect", "org.hibernate.dialect.SQLServerDialect")
            .setProperty("hibernate.connection.username", dbServer.getLogin())
            .setProperty("hibernate.connection.password", dbServer.getPassword())
            .setProperty("hibernate.connection.url", url)
            .buildSessionFactory();
    }

dbServer.getServerName() 返回“serverName\dbInstance”，端口为 1433，dbName 为 master。 使用 Microsoft SQL Management Studio，我可以使用相同的登录名/密码进行连接，所以我很确定这是配置问题 - 我使用的是 sys admin (sa)，所以这不是权限问题。

Answer 1

当我尝试连接数据库时，解决方案是不使用端口。所以连接字符串看起来像这样：

String url = String.format("jdbc:sqlserver://%s;instanceName=%s;databaseName=%s", dbServer.getServerName(), dbServer.getInstanceName(), dbName);