Question

我的应用程序使用Oracle UCP侦听一些表。在生产环境中，应用程序工作正常，但在测试环境中，应用程序用尽了池中的连接。我也在每个查询中关闭并返回使用的连接。请参考连接关闭方法。

public static synchronized void closeConnection(Connection con) throws Exception {
    String print;
    try {
        if (con != null && !con.isClosed()) {
            con.close();
            con =null;
            Config.DB_POOL_COUNT_AVAILABLE = pds.getAvailableConnectionsCount();
            Config.DB_POOL_COUNT_BUSSY = pds.getBorrowedConnectionsCount();
            Config.DB_POOL_COUNT_OPENED = Config.DB_POOL_COUNT_AVAILABLE + Config.DB_POOL_COUNT_BUSSY;      
        } else {
            Config.DB_POOL_COUNT_AVAILABLE = pds.getAvailableConnectionsCount();
            Config.DB_POOL_COUNT_BUSSY = pds.getBorrowedConnectionsCount();
            Config.DB_POOL_COUNT_OPENED = Config.DB_POOL_COUNT_AVAILABLE + Config.DB_POOL_COUNT_BUSSY;              
        }
    } catch (Exception e) {
        Logger.errorLog(e);
    } finally {
        Config.DB_POOL_COUNT_AVAILABLE = pds.getAvailableConnectionsCount();
        Config.DB_POOL_COUNT_BUSSY = pds.getBorrowedConnectionsCount();
        Config.DB_POOL_COUNT_OPENED = Config.DB_POOL_COUNT_AVAILABLE + Config.DB_POOL_COUNT_BUSSY;  
        if(con != null && !con.isClosed()){
            con.close();
            con=null;
        } 
    }       
}

Answer 1

由于您的应用程序在生产环境中运行良好，因此您无需过多地担心连接池。在开发环境中，查询后关闭连接还不错。

有关Oracle UCP的良好实践，请访问https://docs.oracle.com/cd/E18283_01/java.112/e12265/optimize.htm或

https://docs.oracle.com/en/database/oracle/oracle-database/18/jjucp/optimizing-ucp-behavior.html

超出了Oracle UCP池连接限制

1 个答案: