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1496 is the most common size I see. There are probably some efficiencies to be gained using larger sizes. But with fast networks it may not be much. Patrick Wayne Capwell wrote: > > Thanks, I checked and the max frame size is set to 1496, well in excess > of the 680 that seems to be our limit. Is there and justification to > increase the frame size? How big should it be? > Any help appreciated. > Thanks > Wayne > > Patrick Townsend wrote: > > > > Wayne, > > > > I can't answer the questions about ADO, but check the Max frame size on > > your AS/400's ethernet line description. You might need to increase it > > to handle larger buffers of data without breaking up the TCP frame. > > > > Patrick > > > > Wayne Capwell wrote: > > > > > > Hello, > > > We have modified a group of RPG programs to use data queues instead of > > > display files to communicate with an internet connected browser. We > > > created physical files that emulate the display file formats and send > > > and receive the data queues in the RPG programs instead of reading and > > > writing the display file formats. We create the data queues on the > > > AS/400 with a length of 2000 characters. > > > > > > On the web server side, we created a dll using Visual Basic 6.0 and > > > Microsoft ADO objects to receive the data queue information and present > > > it to our server application. The web application parses the data queue > > > string into the browser pages. We also have prefined character strings > > > that emulate the function keys, etc. that sends data back to the > > > AS/400, so the RPG program can complete the read data queue function > > > and continue with its normal processing. > > > > > > All works well when we send less than 680 characters of data. However, > > > when the RPG program sends more than 680, the VB dll get an "Automation > > > Error" and ceases processing. We have tried several iterations of the > > > VB with the same results. We know the data queue contains all the > > > information on the AS/400 side. > > > > > > If anyone knows of this problem or even knows of a resource in IBM or > > > Microsoft that can help, I would greatly appreciate the help. > > > Here are our questions: > > > > > > 1) What version of ADO is recommended? The app currently uses Microsoft > > > OLE DB ADO Library 1.0. All other versions of ADO we try crashes. Are > > > all versions of ADO supported? > > > > > > 2) Why can we send 2000 characters to the data queue, but only receive > > > approx. 680 characters? This causes an "Automation Error". Why? > > > > > > 3). Could they provide code samples of using ADO to communicate with > > > AS400 data queues. We used samples from IBM's web site to develop what > > > we are using now. Any examples in particular of moving large record sets > > > to and from data queues. All samples from IBM's web site sends and > > > receives > > > small amounts of data. > > > > > > TIA > > > > > > Wayne > > > -- > > > ______________________________________ > > > Wayne W. Capwell > > > Red Oak Technologies, Inc. > > > 11301 Carmel Commons Blvd., Suite 114 > > > Charlotte, NC 28226 > > > 704-945-1067 > > > > > > Manufacturing...Production...Solutions > > > http://www.redoaktech.com/ > > > +--- > > > | This is the Midrange System Mailing List! > > > | To submit a new message, send your mail to MIDRANGE-L@midrange.com. > > > | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. > > > | To unsubscribe from this list send email to >MIDRANGE-L-UNSUB@midrange.com. > > > | Questions should be directed to the list owner/operator: >david@midrange.com > > > +--- > > > > -- > > IBM AS/400 communications, FTP automation, and network security > > software and consulting services. > > > > http://www.patownsend.com > > +--- > > | This is the Midrange System Mailing List! > > | To submit a new message, send your mail to MIDRANGE-L@midrange.com. > > | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. > > | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. > > | Questions should be directed to the list owner/operator: >david@midrange.com > > +--- > > -- > ______________________________________ > Wayne W. Capwell > Red Oak Technologies, Inc. > 11301 Carmel Commons Blvd., Suite 114 > Charlotte, NC 28226 > 704-945-1067 > > Manufacturing...Production...Solutions > http://www.redoaktech.com/ > +--- > | This is the Midrange System Mailing List! > | To submit a new message, send your mail to MIDRANGE-L@midrange.com. > | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. > | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. > | Questions should be directed to the list owner/operator: david@midrange.com > +--- -- IBM AS/400 communications, FTP automation, and network security software and consulting services. http://www.patownsend.com +--- | This is the Midrange System Mailing List! | To submit a new message, send your mail to MIDRANGE-L@midrange.com. | To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com. | To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com. | Questions should be directed to the list owner/operator: david@midrange.com +---
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