Handling integration issues relating to data mapping within OCI (Oracle Cloud Infrastructure) or any other data integration platform can be quite challenging. There are several common challenges and troubleshooting steps that should always be kept in mind when looking at such problems. Below is a guide on how to deal with mapping issues effectively.
Data type mismatches
Issue : The source and target data types are not compatible (e.g., a string against an integer).
Answer: Verify the data types in both the source and target systems. You may use data transformation functions so as to convert data types in some cases.
Column Mismatches
Problem: Misalignment of column names or structures between the source and target schemas.
Solution: Check for equality on column names, their order, and data types between the source system and the target system, such as mapping tools can be employed to align columns manually.
Data Format Issues
Problem: Data formats (e.g., date formats, decimal separators) do not match.
Solution: Transformations during format conversion should take place alongside other transformations to ensure that there is consistency between the sources and targets of information.
Example:
When you find issue with date column use custom option and mention keyword type as given below
Troubleshooting Steps:
Mapping Configuration Review
- Ensure that your data integration tool deals with mappings, predefined where appropriate, OCI Data Integration or Data Flow for instance.
- Check that mappings are done correctly in relation to each and every of the data fields.
Data Samples Examination
- Discrepancies can be identified by comparing sample source and target data.
- Verify that transformations of the data have been done rightly by seeing if the output is as expected.
Error Logs and Diagnostics Review
- Learn about the map problems from error logs and diagnostics.
- Trace back errors to specific mapping or transformation steps using available tools.
