Could you please check for us in your Oracle home client directory under folder c:\DevSuiteHome\Network\Admin:
- Open the sqlnet.ora and check if you have LDAP included in the NAMES.DIRECTORY_PATH, ex. NAMES.DIRECTORY_PATH= (TNSNAMES, LDAP)
SQL Navigator specifically looks for LDAP in NAMES.DIRECTORY_PATH, if ‘LDAP’ does not exist in the string, the LDAP fields in the log on window will not be enabled.
We believe that you might not have NAMES.DIRECTORY_PATH specify yet in your Oracle home sqlnet.ora. Could you please check check it again and add LDAP to the NAMES.DIRECTORY_PATH.
Thanks and regards,