Enter user-name: / as sysdba

Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> desc user$
 Name					   Null?    Type
 ----------------------------------------- -------- ----------------------------
 USER#					   NOT NULL NUMBER
 NAME					   NOT NULL VARCHAR2(30)
 TYPE#					   NOT NULL NUMBER
 PASSWORD					    VARCHAR2(30)
 DATATS#				   NOT NULL NUMBER
 TEMPTS#				   NOT NULL NUMBER
 CTIME					   NOT NULL DATE
 PTIME						    DATE
 EXPTIME					    DATE
 LTIME						    DATE
 RESOURCE$				   NOT NULL NUMBER
 AUDIT$ 					    VARCHAR2(38)
 DEFROLE				   NOT NULL NUMBER
 DEFGRP#					    NUMBER
 DEFGRP_SEQ#					    NUMBER
 ASTATUS				   NOT NULL NUMBER
 LCOUNT 				   NOT NULL NUMBER
 DEFSCHCLASS					    VARCHAR2(30)
 EXT_USERNAME					    VARCHAR2(4000)
 SPARE1 					    NUMBER
 SPARE2 					    NUMBER
 SPARE3 					    NUMBER
 SPARE4 					    VARCHAR2(1000)
 SPARE5 					    VARCHAR2(1000)
 SPARE6 					    DATE