The default single sign-on method when usinghdbsql, the command line interface for SAP HANA, is Kerberos based. This method leverages the Kerberos protocol to authenticate users without transmitting passwords, enhancing the security of connections especially in enterprise environments where Kerberos is commonly used as part of the security infrastructure.References= SAP HANA Administration and Security documentation, which discusses authentication mechanisms supported by SAP HANA including the use of Kerberos for single sign-on.
Database Security