Can't Select a View on Informix
You say the directory has rw permission; does it also have x permission.  You need x permission to access the files in a directory (so you might set the permissions on the directory to ... gritted teeth ... 777, but you shouldn't.  Is the directory owned by user informix and does it belong to group informix?  Ideally, it should be owned by informix:informix, and the permissions should be 770 (or drwxrwx---).