Error
Error Code: ORA-28273

Oracle ORA-28273: LDAP Mapping Failure

📦 Oracle Database
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Description

The ORA-28273 error indicates that Oracle Database cannot map a user nickname to its corresponding Distinguished Name (DN) in the Lightweight Directory Access Protocol (LDAP) directory. This typically occurs during authentication or authorization processes when the database attempts to verify a user's identity against the LDAP server.
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Error Message

ORA-28273: No mapping for user nickname to LDAP distinguished name exists.
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Known Causes

3 known causes
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Incorrect Nickname Attribute
The user nickname attribute in LDAP is missing or incorrectly configured for the user. This prevents Oracle from finding the correct DN.
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LDAP Entry Missing
The corresponding user entry does not exist in the LDAP directory. This means there's no DN associated with the given nickname.
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Configuration Error
The Oracle database is not correctly configured to map user nicknames to LDAP DNs. This could be due to incorrect settings in the `ldap.ora` file or related configuration parameters.
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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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