Add

-m-1

to your osql parameters

Create your batch file like this

CALL batchfile.bat servername databasename scriptname1.sql

IF ERRORLEVEL 1 GOTO ER

CALL batchfile.bat servername databasename scriptname2.sql

IF ERRORLEVEL 1 GOTO ER

CALL batchfile.bat servername databasename scriptname3.sql

IF ERRORLEVEL 1 GOTO ER

GOTO EX

:ER

ECHO Error

:EX