AIX

heapdump716960.1416296627.txt  
heapdump716960.1416299494.txt    
heapdump716960.1416302375.txt   

trying to delete the above files

root@atec:/oratec/prodcomn/temp>rm heap*.*.txt
ksh: /usr/bin/rm: 0403-027 The parameter list is too long.

root@atec:/oratec/prodcomn/temp>rm heap*.txt
ksh: /usr/bin/rm: 0403-027 The parameter list is too long.

root@atec:/oratec/prodcomn/temp>rm heap*
ksh: /usr/bin/rm: 0403-027 The parameter list is too long.
root@atec:/oratec/prodcomn/temp>

find -type f -name "heapdump*.*txt" -print -exec rm {} \;

for i in heap*.*.txt; do
  rm "$i"
done

find . -type f -name 'heap*.*.txt' -exec rm {} +