Você pode passar um parâmetro desta forma:
script.sql:
select '&1' from dual;
a chamada:
D:\>sqlplus user/[email protected] @d:\script.sql 'value'
SQL*Plus: Release 11.2.0.2.0 Production on Lun Ott 3 17:02:10 2016
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
old 1: select '&1' from dual
new 1: select 'value' from dual
'VALU
-----
value
