Question

我有一个java应用程序，它使用Java Thread每1秒连接到MSSQL数据库查询一些信息，下面是伪

class PaintPage extends Component {
constructor(props) {
    super(props);
    this.state = {};

    this.handleSubmit = this.handleSubmit.bind(this);
    //Brads cool
}

handleSubmit(e) {
    e.preventDefault();

    Paint.insert({
        brand: this.refs.brand.value,
        color: this.refs.color.value,
        sheen: this.refs.sheen.value,
        room: this.refs.room.value
    });
}

render() {
    var paintArr = Paint.find().fetch();
    paintArr.map((room, index) =>
        <div className="row">
            <div className="col-xs-2">
                <li className="list-group-item text-center" key={room}>
                    {paintArr}
                </li>
            </div>
        </div>
    );

    return (
        <div>
            <div className="row">
                <div className="col-xs-4">
                    <ProductNav />
                </div>
            </div>
            <form className="form" onSubmit={this.handleSubmit}>
                <div className="row">
                    <div className="col-xs-4" />
                    <div className="col-xs-4">
                        <label htmlFor="brand" className="input">
                            Paint Brand
                        </label>
                        <div className="field">
                            <input
                                type="text"
                                name="brand"
                                className="form-control"
                                placeholder="Brand/Company"
                                ref="brand"
                                value={this.props.value}
                                onChange={this.props.onChange}
                            />
                        </div>
                    </div>
                </div>
                <div className="row">
                    <div className="col-xs-4" />
                    <div className="col-xs-4">
                        <label htmlFor="color" className="input">
                            Color
                        </label>
                        <div className="field">
                            <input
                                type="text"
                                name="brand"
                                className="form-control"
                                placeholder="Color"
                                ref="color"
                                value={this.props.value}
                                onChange={this.props.onChange}
                            />
                        </div>
                    </div>
                </div>
                <div className="row">
                    <div className="col-xs-4" />
                    <div className="col-xs-4">
                        <label htmlFor="brand" className="input">
                            Sheen
                        </label>
                        <div className="field">
                            <input
                                type="text"
                                name="brand"
                                className="form-control"
                                placeholder="Sheen"
                                ref="sheen"
                                value={this.props.value}
                                onChange={this.props.onChange}
                            />
                        </div>
                    </div>
                </div>
                <div className="row">
                    <div className="col-xs-4" />
                    <div className="col-xs-4">
                        <label htmlFor="room" className="input">
                            Room
                        </label>
                        <div className="field">
                            <input
                                type="text"
                                name="room"
                                className="form-control"
                                placeholder="Room"
                                ref="room"
                                value={this.props.value}
                                onChange={this.props.onChange}
                            />
                        </div>
                    </div>
                </div>
                <div className="row">
                    <div className="col-xs-12"> </div>
                    <input
                        className="btn btn-primary btn-lg button-buffer"
                        type="submit"
                        value="Input"
                    />
                </div>
            </form>
            <div>
                <div>
                    <ul className="list-group">
                        {paintArr.toString()}
                    </ul>
                </div>
            </div>
        </div>
    );
}
}

export default PaintPage;

所以发生了什么，SQL Server最初为该查询分配了SPID 60，当java清理并关闭连接时，1秒后又要求连接执行相同的查询SQL Server分配回SPID 60

由于这个TempDB文件永远不会自由并继续增加。所以我的问题是：如何确保每次在sql server中获得新会话？这样tempDB就不会继续增加并保持空间。

Answer 1

问题在于连接池设置和一个在1秒内保持池的java代码，因为该连接从未关闭。以下是我对JBOSS 5和mSSQL Server的设置

<?xml version="1.0" encoding="UTF-8"?>
 <datasources>
 <local-tx-datasource>
  <jndi-name>Base_nucleusdv</jndi-name> 
  <driver-class>com.microsoft.sqlserver.jdbc.SQLServerDriver</driver-class> 
  <connection-url>jdbc:sqlserver://db;databaseName=ReportServices;</connection-url>
  <security-domain>EncryptPassword</security-domain>
    <!--pooling parameters-->
    <min-pool-size>0</min-pool-size>
    <max-pool-size>20</max-pool-size>
    <idle-timeout-minutes>1</idle-timeout-minutes>
    <query-timeout>60</query-timeout>
    <track-statements>true</track-statements>
  </local-tx-datasource>
  </datasources>

旧连接增加了TempDB大小

1 个答案: