zOs/TX/QBLOBSEL

select name
     , length(lob1) lob1Len
     , substr(lob1, 1, 30)                         left
     , substr(lob1, max(length(lob1)-29, 1), 30)   right
     , substr(lob1, max(length(lob1) / 2, 1), 30)  middle
     from QZ92CRT.TQZ91QBLOGORI
;