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Why Isn't My JDBC Logging Working, and How Can I Fix It Using log4jdbc or p6spy?
- Barbara StreisandOriginal
- 2025-01-05 04:45:42184browse
Enabling JDBC Logging Without Success
Despite attempts to enable logging for a JDBC program, users have encountered exceptions and failed to see the expected log outputs.
log4jdbc and p6spy
To address this, it is recommended to consider using logging frameworks such as log4jdbc or p6spy. These frameworks provide extensive logging capabilities specifically tailored for JDBC operations.
log4jdbc Usage
- Add the log4jdbc JAR to the application's classpath.
- Choose a logging framework (e.g., log4j, logback).
- Set the JDBC driver class to net.sf.log4jdbc.DriverSpy.
- Prepend jdbc:log4 to the original JDBC URL.
- Configure logging categories to enable SQL-related logging (e.g., jdbc.sqlonly or jdbc.sqltiming).
Common Causes of Exceptions
- Different JAR versions: Using both ojdbc6-11.2.0.3.jar and ojdbc6dms.jar can lead to conflicts. Stick to one version for stability.
- Missing dependency: The oracle.dms.console.DMSConsole class is required when using ojdbc6dms.jar. Include the corresponding dependency in your project.
- Unsupported JDK version: Ensure that the log4jdbc JAR is compatible with the target JDK version.
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