LDAP test connection is failing with error code "80 - 00000008: SysErr: DSID-030222A0, problem 12 (Not enough space) " - Support and Troubleshooting

LDAP test connection is failing with error code "80 - 00000008: SysErr: DSID-030222A0, problem 12 (Not enough space) " Issue  Symptoms While performing Test connection from the LDAP OU Definitions of LDAP server configuration , we are receiving error as message as follows.

Error message : LDAP: error code 80 - 00000008: SysErr: DSID-030222A0, problem 12 (Not enough space), data 0" Release All the releases.

Cause Verify the LDAP configuration at Servicenow end and it looks fine. Performed test connection from LDAP OU Definition/Groups and I didn't see any error but when I performed the same test connection from LDAP OU Definition/ Users and I got the same error which is mentioned.

Path to regenerate the error: LDAP configuration > LDAP OU Definition –Users>Test Connection.

Resolution This error which we received for test connection is not a Servicenow limitation, this is happening because the remote LDAP server is running out of memory as it is processing the query submitted.

For example this kind of document should give you an idea of the type of optimisation that can be done. https://docs.microsoft.com/en-us/windows-server/administration/performance-tuning/role/active-directory-server/ldap-considerations

Alternatively, change the filter query and make it simple and this may help reducing the amount of memory needed for your LDAP to process the query and return the results back to Servicenow