DOCUMENTATION
/
Getting Started
Guides
Developer
Reference
Releases
Tutorials
Snowflake Open Catalog
Status
  1. Overview
    • Builders
    • Snowflake DevOps
      • Observability
        • Snowpark Library
        • Snowpark API
        • Machine Learning
        • Snowflake ML
        • Snowpark Code Execution Environments
        • Snowpark Container Services
        • Functions and procedures
            1. Function or procedure?
              • Guidelines
              • Stored procedures
              • User-defined functions
                  1. Privileges
                    • Creating
                      • Executing
                        • Viewing in Snowsight
                          • Handler writing
                          • Java
                              1. Limitations
                                • Designing
                                  • Creating
                                    • Table functions
                                      • Examples
                                        • Troubleshooting
                                      • Javascript
                                      • Python
                                      • Scala
                                      • SQL
                                  • Packaging handler code
                                  • External network access
                              2. Logging, Tracing, and Metrics
                              3. Snowflake APIs
                              4. Snowflake Python APIs
                              5. Snowflake REST APIs
                              6. SQL API
                              7. Apps
                              8. Streamlit in Snowflake
                              9. Snowflake Native App Framework
                              10. Snowflake Native SDK for Connectors
                              11. External Integration
                              12. External Functions
                              13. Kafka and Spark Connectors
                              14. Snowflake Scripting
                              15. Snowflake Scripting Developer Guide
                              16. Tools
                              17. Snowflake CLI
                              18. Git
                              19. Drivers
                              20. Overview
                              21. Considerations when drivers reuse sessions
                                • Reference
                                • API Reference
                                  DeveloperFunctions and proceduresUser-defined functionsJavaTroubleshooting

                                  Troubleshooting Java UDFs¶

                                  This topic provides troubleshooting information about Java UDFs (user-defined functions).

                                  Troubleshooting¶

                                  Tips¶

                                  If using a Java UDF in a masking policy, ensure the data type of the column, UDF, and masking policy match.

                                  Was this page helpful?

                                  Visit Snowflake
                                  Join the conversation
                                  Develop with Snowflake
                                  Share your feedback
                                  Read the latest on our blog
                                  Get your own certification
                                  Privacy NoticeSite Terms© 2025 Snowflake, Inc. All Rights Reserved.
                                  1. Troubleshooting
                                  1. User-defined functions overview
                                  Language: English
                                  • English
                                  • Français
                                  • Deutsch
                                  • 日本語
                                  • 한국어
                                  • Português