Error
Error Code: ORA-28575

ORA-28575: Extproc Connection Failure

📦 Oracle Database
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Description

The ORA-28575 error indicates a failure to establish a network connection with the extproc agent. This typically occurs when Oracle Database attempts to execute external procedures and cannot communicate with the configured agent process.
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Error Message

unable to open RPC connection to external procedure agent
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Known Causes

4 known causes
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Listener Configuration Error
The listener configuration in `LISTENER.ORA` is incorrect or missing, preventing the database from finding the extproc agent.
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Network Connectivity Issues
Network problems, such as firewall restrictions or DNS resolution failures, are blocking communication between the database and the extproc agent.
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TNSNAMES.ORA Misconfiguration
The `TNSNAMES.ORA` file contains incorrect entries for the extproc agent, leading to connection failures.
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Incorrect Transfer Code
The transfer code used for communication between the database and the external procedure agent is incorrect or unsupported.
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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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