我花了几天时间尝试在我的Spring Boot应用中开启Oracle UCP日志，但还未成功。
这里是我用来获取一些细节的代码（根日志级别和Oracle日志记录器的级别、处理程序）：

@SpringBootApplication
@EnableAsync
@Slf4j
public class RabotApplication {
    public static void main(String[] args) {
        SpringApplication.run(RabotApplication.class, args);

        System.out.println("--- LIST OF ACTIVE LOGGERS ---");
        java.util.Enumeration<String> loggerNames = java.util.logging.LogManager.getLogManager().getLoggerNames();
        while (loggerNames.hasMoreElements()) {
            String name = loggerNames.nextElement();
            if (name.contains("oracle") || name.isEmpty()) {
                Logger logger = java.util.logging.Logger.getLogger(name);
                System.out.println("Logger found: " + name + " [Level: " + logger.getLevel() + "]");
                System.out.println("UseParentHandlers: " + logger.getUseParentHandlers());
                for (java.util.logging.Handler h : logger.getHandlers()) {
                    System.out.println("Handler: " + h.getClass().getName() + " level: " + h.getLevel());
                }
                logger.finest("Test finest message");
            }
        }
        System.out.println("-------------------------------------");
    }

因此输出是：

--- LIST OF ACTIVE LOGGERS ---
Logger found:  [Level: INFO]
UseParentHandlers: true
Handler: org.slf4j.bridge.SLF4JBridgeHandler level: ALL
Logger found: oracle.ucp [Level: FINEST]
UseParentHandlers: true
2026-04-17T13:01:05.376+03:00 TRACE 33153 --- [rabot] [           main] oracle.ucp                               : Test finest message
Logger found: oracle.ucp.jdbc [Level: FINEST]
UseParentHandlers: true
2026-04-17T13:01:05.376+03:00 TRACE 33153 --- [rabot] [           main] oracle.ucp.jdbc                          : Test finest message
Logger found: oracle.jdbc [Level: FINEST]
UseParentHandlers: true
2026-04-17T13:01:05.376+03:00 TRACE 33153 --- [rabot] [           main] oracle.jdbc                              : Test finest message
-------------------------------------

如你所见，我能够看到自定义的Finest级别消息，但应用程序运行且池被使用时，根本没有显示任何日志。

以下是我使用的Oracle库：

<dependency>
    <groupId>com.oracle.database.jdbc</groupId>
    <artifactId>ojdbc11</artifactId>
    <version>23.26.1.0.0</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>com.oracle.database.jdbc</groupId>
    <artifactId>ucp</artifactId>
    <version>23.26.1.0.0</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>com.oracle.database.security</groupId>
    <artifactId>oraclepki</artifactId>
    <version>23.26.1.0.0</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>com.oracle.database.security</groupId>
    <artifactId>osdt_cert</artifactId>
    <version>21.21.0.0</version>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>com.oracle.database.security</groupId>
    <artifactId>osdt_core</artifactId>
    <version>21.21.0.0</version>
    <scope>compile</scope>
</dependency>

解决方案

请参考下方文档了解UCP日志：
https://docs.oracle.com/en/database/oracle/oracle-database/26/jjucp/logging-and-tracing-in-UCP.html#GUID-9DD72639-91E5-479C-926E-9CED38D77E61
默认情况下日志记录是禁用的，你需要通过设置以下系统属性（JVM属性）来启用它：

-Doracle.ucp.diagnostic.enableLogging=true

你是否为你的UCP池设置了任何连接池名称？