Roles y usuarios

Como crear Roles y usuarios en Oracle utilizando PL/SQL Developer Script -- Create the role create role SOPORTE_TABLA; -- Grant/Revoke system privileges grant create session to SOPORTE_TABLA; grant select any table to SOPORTE_TABLA; grant update any table to SOPORTE_TABLA; ******************************************************************************* -- Create the role create role SOPORTE_EXTERNO; -- Grant/Revoke system privileges grant alter any table to SOPORTE_EXTERNO; grant create any table to SOPORTE_EXTERNO; grant create session to SOPORTE_EXTERNO; grant create table to SOPORTE_EXTERNO; grant create tablespace to SOPORTE_EXTERNO; grant select any table to SOPORTE_EXTERNO; ******************************************************************************* -- Create the user create user MARCELO identified by "" default tablespace USERS temporary tablespace TEMP profile DEFAULT password expire; -- Grant/Revoke role privileges grant soporte_externo to MARCELO; -- Grant/Revoke system privileges grant unlimited tablespace to MARCELO; ******************************************************************************* -- Create the user create user ISACC identified by "" default tablespace USERS temporary tablespace TEMP profile DEFAULT password expire; -- Grant/Revoke role privileges grant soporte_tabla to ISACC;