Error
Error Code:
ORA-28526
Oracle ORA-28526: Invalid Describe
Description
The ORA-28526 error indicates that Oracle's Heterogeneous Services (HS) received invalid metadata (describe information) from a non-Oracle agent. This usually occurs when querying or working with external data sources using HS and the agent is misconfigured or has a bug.
Error Message
ORA-28526: invalid describe information returned to Heterogeneous Services
Known Causes
4 known causesAgent Bug
The Heterogeneous Services agent itself has a bug that causes it to return malformed describe information. This is the most common cause.
Incorrect Agent Configuration
The agent is not properly configured to communicate with the external data source, resulting in incorrect metadata being generated.
Data Type Mismatch
A mismatch in data types between the Oracle database and the external data source causes the agent to misinterpret the data structure.
Unsupported Data Type
The external data source uses a data type that is not supported by the Heterogeneous Services agent, leading to incorrect describe information.
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