Java Flink Oracle 连接池创建教程：使用 Apache Commons DBCP

"要创建一个 Oracle 连接池，可以使用 Apache Commons DBCP（数据库连接池）库。以下是一个使用 DBCP 创建 Oracle 连接池的示例代码：\n\njava\nimport java.sql.Connection;\nimport java.sql.SQLException;\nimport oracle.jdbc.pool.OracleDataSource;\nimport org.apache.commons.dbcp2.BasicDataSource;\n\npublic class OracleConnectionPool {\n private static BasicDataSource dataSource;\n\n private static final String ORACLE_URL = \"jdbc:oracle:thin:@//hostname:port/service\";\n private static final String ORACLE_USER = \"username\";\n private static final String ORACLE_PASSWORD = \"password\";\n private static final int MAX_CONNECTIONS = 10;\n\n public static void main(String[] args) {\n createDataSource();\n Connection connection = getConnectionFromPool();\n // 使用连接执行操作\n // ...\n releaseConnection(connection);\n closeDataSource();\n }\n\n private static void createDataSource() {\n try {\n OracleDataSource oracleDataSource = new OracleDataSource();\n oracleDataSource.setURL(ORACLE_URL);\n oracleDataSource.setUser(ORACLE_USER);\n oracleDataSource.setPassword(ORACLE_PASSWORD);\n\n dataSource = new BasicDataSource();\n dataSource.setDriverClassName(oracleDataSource.getDriver().getClass().getName());\n dataSource.setUrl(ORACLE_URL);\n dataSource.setUsername(ORACLE_USER);\n dataSource.setPassword(ORACLE_PASSWORD);\n dataSource.setMaxTotal(MAX_CONNECTIONS);\n } catch (SQLException e) {\n e.printStackTrace();\n }\n }\n\n private static Connection getConnectionFromPool() {\n Connection connection = null;\n try {\n connection = dataSource.getConnection();\n } catch (SQLException e) {\n e.printStackTrace();\n }\n return connection;\n }\n\n private static void releaseConnection(Connection connection) {\n try {\n connection.close();\n } catch (SQLException e) {\n e.printStackTrace();\n }\n }\n\n private static void closeDataSource() {\n try {\n dataSource.close();\n } catch (SQLException e) {\n e.printStackTrace();\n }\n }\n}\n\n\n请注意，您需要根据您的实际 Oracle 数据库配置进行相应的更改。"