ORAUSER="oracle_username"
ORAPWD="oracle_password"
SPOOLFILE="spool filename"
 
sqlplus -s $ORAUSER/$ORAPWD >/dev/null <<!
        set show off
        set term off
        set termout off
        set trimspool on
        set verify off
        set feedback off
        set pagesize 0
        set long 2048
        set longchunksize 2048
        set linesize 2048
        set trimspool on
        set trim on
        SPOOL $SPOOLFILE
        @script1.sql
        @script2.sql
        @script3.sql
        @script4.sql
        @script5.sql
        @script6.sql
        SPOOL OFF;
!