OK, Chuckie -- what have you done with Alan this time!?  Obviously that 
trace message was a perfectly adequate typical self-documenting message. 
<He says while bending down to insert the knife from behind just above the 
kidneys>  ;-)

How about an even more useful message:
DTCOCPxxxI Conn 2: Client 10.11.12.13 screen dimensions (66 x 160) too 
large for DATABUFFERSIZE (8192).  Closing connection.

Such a "DATABUFFERSIZE" breadcrumb provides at least a solid clue for the 
highly skilled z/VM sysprog acting as a network admin (some shops are not 
very well delegated).

Bill, the problem with turning on the trace presumes that one has 
discovered a repeatable problem, determined what causes the undesired 
result, and replicate it at will without significant effort, and has the 
authority to issue the commands (some shops are awfully well delegated). 
-- Can you imagine CP without dumps?  OK, after you crash and IPL, set a 
CP TRSOURCE and then repeat the problem while capturing the error before 
the system crashes again -- not a very acceptable idea.  If TCPIP 
encounters an error that causes the loss of a session one should 
reasonably expect that there would be 
diagnostic messages issued to the TCPIP console to permit at least a 
glimmer of "First Failure Data Capture", yes?

I'm grateful for the NETSTAT OBEY TRACE TELNET/TRACEOFF example.  It will 
go into my sysprog toolkit if Al Zheimer doesn't lose it first.

Mike Walter 
Hewitt Associates 
Any opinions expressed herein are mine alone and do not necessarily 
represent the opinions or policies of Hewitt Associates.



"Alan Altmark" <[EMAIL PROTECTED]> 

Sent by: "The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>
02/23/2007 03:38 PM
Please respond to
"The IBM z/VM Operating System" <IBMVM@LISTSERV.UARK.EDU>



To
IBMVM@LISTSERV.UARK.EDU
cc

Subject
Re: Max size 3270 screen






On Friday, 02/23/2007 at 03:37 EST, William Moy/Endicott/[EMAIL PROTECTED] 
wrote:
 
> The resultant TCP/IP console should have in it msgs similar to the 
following:
> 15:20:49 DTCOCP032I Conn 2: Transparent-mode data overruns buffer. 
ToCpPos 8192,
>  CharsScanned 2048, hbound(...) 8192. Killing conn.
> 15:20:49 DTCSTM120I  Killing Connection: 2

(cough) That's not really a message - it's debug output and only 
meaningful if you're reading TNTOCP PASCAL.  How about a real message that 

says:
  DTCOCPxxxI Conn 2: Client 10.11.12.13 screen dimensions (66 x 160) too 
large for data buffer (8192).  Closing connection.
and that is NOT behind a trace.  The telnet server knows when it is 
processing a WSF QUERY REPLY and could stash the dimensions away when an 
Implicit Partition Query reply is received.

The Msgs & Codes would tell you to update DATABUFFERPOOLSIZE and that it 
should be large enough to hold (rows x columns)+20(?) bytes.

It must be Friday.

Alan Altmark
z/VM Development
IBM Endicott




 
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