Error
Error Code: ORA-28275

Oracle ORA-28275: Duplicate LDAP Mapping

📦 Oracle Database
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Description

The ORA-28275 error indicates that a user nickname in Oracle Database is mapped to multiple distinguished names in the LDAP directory. This usually happens during LDAP integration or when user nicknames are not uniquely managed across the enterprise.
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Error Message

ORA-28275: Multiple mappings for user nickname to LDAP distinguished name exist.
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Known Causes

3 known causes
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Non-Unique Nicknames
The user nicknames used in Oracle database aren't unique across the organization's LDAP setup, leading to multiple matches.
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LDAP Configuration Issues
Incorrect LDAP configuration or synchronization problems can cause the database to find multiple entries for the same nickname.
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Synchronization Errors
Failed or incomplete synchronization between the database and the LDAP directory may result in inconsistent user mappings.
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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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