The -kr server option is deprecated and will be removed in a future release.
The -kr iqsrv15 server option specifies the realm of the Kerberos server principal and enables Kerberos authenticated connections to the database server.
The use of the -kr option is deprecated. Use the -kp option to specify the Kerberos server principal. When specifying -kp the server principal must have been extracted to the Kerberos keytab file on the computer running the database server.