Odd Length MPE Files

[Brian Schalme]

	Colin:

	Cognos says PowerHouse does not support odd-length records (that is #
of bytes) in MPE. Sometimes it works, but they say not to count on that
in future releases of PH. They recommend using even-length record
structures in subfiles and direct files.

	MPE lives and breathes on word boundaries. It's usually best to live
this way to avoid problems in the future - keeping all record lengths an
even number of bytes. TurboIMAGE is one system that forces you to do
this.

	Cheers!

		Brian Schalme
		Airspeed Consulting
		bschalme@mbnet.mb.ca

Colin Glass wrote:
> 
> We are currently running PowerHouse 8.19.C5 on an HP3000 machine.
> 
> We have found a problem with Quiz reporting from odd record length MPE
> direct files.  We are seeing any files with a blocking factor more than 1 is
> reporting erroneous data for some records.  The problem did not occur with
> PH8.19.C4 with the same MPE ix operating system.
> 
> the problem is with the last record of each block.  The values reported for
> the last one or more elements is wrong and the values change with successive
> access within the same Quiz session.
> 
> Also, the files are reported fine as long as there are not too many records
> on file.  For example, one file was fine for up to 199 records - after that,
> every 6th record reported incorrectly.
> 
> Is there anyone else that has encountered this problem?  Any resolution?
> 
> _______________________________
> Colin Glass - cglass@mlcc.mb.ca
> Programmer/Analyst
> Manitoba Liquor Control Commission
> Ph:  (204) 474-5597
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