If you disconnected from SQL*Plus reconnect and we'll try creating a table.
bash-2.05$ export ORACLE_SID=test bash-2.05$ sqlplus /nolog SQL*Plus: Release 10.1.0.2.0 - Production on Tue Oct 5 17:25:27 2004 Copyright (c) 1982, 2004, Oracle. All rights reserved. SQL> connect sys/passwd as sysdba Connected. SQL> create table address_book ( 2 id number, 3 name varchar2(30), 4 home_num varchar2(12), 5 cell_num varchar2(12), 6 location varchar(40) 7 ); Table created. SQL>