Error
Error Code:
ORA-29256
Oracle Error ORA-29256: Mixed Define Types
Description
This error occurs in Oracle Database when a cursor attempts to use both regular defines (define_column) for PL/SQL variables and array defines (define_array) for PL/SQL tables. Combining these define types on a single cursor is not supported by Oracle. It indicates a logic error in PL/SQL code attempting to retrieve data into mixed data structures.
Error Message
ORA-29256: Cursor contains both regular and array defines which is not valid.
Known Causes
3 known causesMixed Define Calls
The PL/SQL code calls both `define_array` and `define_column` on the same cursor object, attempting to populate both PL/SQL tables and variables simultaneously.
Incorrect Cursor Handling
The cursor is being reused inappropriately, leading to a situation where array defines are set after regular defines, or vice versa.
Logic Error in Data Retrieval
The application logic incorrectly assumes a single cursor can handle both scalar values and arrays of values within the same query execution.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service