Error in executing sored script in rman

@WINDOWDB

 I have the followiing script that is failing:
connect catalog rman/<rman password>
connect target sys/<password>@WINDOWDB
run { execute script backup_archives; }

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{
	
  ALLOCATE CHANNEL dev1 DEVICE TYPE DISK FORMAT 'c:\arc_temp\AL_%d_%U_%p';
	
  crosscheck archivelog all;
	
  delete expired archivelog all;
	
  backup archivelog all skip inaccessible delete input;
	
}
	


-------------------------------------------------------
	
RMAN> 
	
echo set on
	


RMAN> connect catalog *
	
RMAN-00571: ===========================================================
	
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
	
RMAN-00571: ===========================================================
	
RMAN-06445: cannot connect to recovery catalog after NOCATALOG has been used
	

RMAN> connect target *
	
RMAN-00571: ===========================================================
	
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
	
RMAN-00571: ===========================================================
	
RMAN-06167: already connected
	

RMAN> run { execute script backup_archives; }
	
RMAN-00571: ===========================================================
	
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============