Error
Error Code: ORA-28157

Oracle ORA-28157: Role Access Denied

📦 Oracle Database
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Description

This error indicates a proxy user attempted to activate a role for a client user, but was explicitly forbidden from doing so. This occurs when the `ALTER USER ... GRANT CONNECT THROUGH ... WITH ALL ROLES EXCEPT` command has restricted the proxy user from using the specified role for that client.
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Error Message

ORA-28157: Proxy user ' string ' forbidden to set role ' string ' for client ' string '
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Known Causes

3 known causes
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Role Exclusion
The `ALTER USER ... GRANT CONNECT THROUGH ... WITH ALL ROLES EXCEPT` statement specifically excluded the attempted role for the proxy/client combination.
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Incorrect Grant
The proxy user was granted connect through the client, but the required role was not included in the `WITH ALL ROLES` clause or explicitly granted.
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Missing Privileges
The proxy user lacks the necessary privileges to activate the role on behalf of the client user, even if granted CONNECT THROUGH.
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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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