Error
Error Code: ORA-28534

Oracle ORA-28534: HS Preprocessing Failure

📦 Oracle Database
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Description

The ORA-28534 error indicates a problem during preprocessing of SQL statements by Heterogeneous Services (HS). This usually happens when HS attempts to optimize SQL with implicit coercions or explicit conversion functions before passing it to a non-Oracle system.
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Error Message

ORA-28534: Heterogeneous Services preprocessing error
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Known Causes

3 known causes
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Incorrect Capabilities Configuration
The HS capabilities table, which dictates how coercions are handled, is not configured correctly for the target non-Oracle system.
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Unsupported Data Type Conversion
HS is attempting to perform a data type conversion that is not supported by the configured capabilities or the non-Oracle system.
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Agent Vendor Incompatibility
There may be an incompatibility between the HS agent provided by the vendor and the Oracle database version.
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Solutions

Coming Soon

Detailed 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

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