Length of the CDR area

When coding IOSCDR, you must ensure that the CDR area is large enough to receive the entire CDR. If the length you specify on the CDRLEN parameter is smaller than the size returned in the CDRSIZE parameter, IOSCDR retrieves a partial CDR. As shown in Figure 1, the size of the actual CDR is 256 bytes, but CDRAREA is only 128 bytes. In this case, CDRAREA could hold only half of the actual CDR. To obtain the entire CDR, reissue IOSCDR with a CDRLEN value that is equal to or greater than the 256 bytes returned in CDRSIZE.