User`s guide

DC 900-1406E 101

Chapter

Cautions

The following is a list of cautions that users of the BSC File Transfer program should

heed.

• The default size is 1024 bytes for the BSCTRAN write buffer and the ICP message

buffers, but the value can be increased up to 4096 by means of the

DEFAULT

/BUFSIZE=n command. The BSCTRAN write buffer size must always be less than

or equal to the ICP message buffer size to avoid buffer errors from Freeway. Refer

to Section 2.5 on page 33 for details of the

DEFAULT /BUFSIZE command. See the

BSC Programmer’s Guide for more information on ICP message buffers.

• BSCTRAN posts all reads to the ICP with a read buffer size of 4096 plus 8 bytes

for the control header (regardless of the ICP buffer size). Therefore, your VMS

SYSGEN MAXBUF parameter must be at least 5004, or you will get an “exceeded

quota” error. Consult your system manager if you encounter this problem.

• For some conﬁguration parameters, a link must be disabled prior to issuing a SET

/PARn=d command. Refer to the BSC Programmer’s Guide.

• The SET /START command must be issued before sending or receiving ﬁles on a

link.

• When sending or receiving transparent 3780 data, use the /BINARY option to pre-

vent the addition or deletion of record separator characters. For transparent 2780

data, use the

/BINARY option only on receive.