• Subject: Re: OVRTAPF/CPYFRMTAP command parameters
  • From: "Simon Coulter" <shc@xxxxxxxxxxxxxxxxx>
  • Date: Tue, 23 Jan 01 10:32:04 +1100


Hello Ed,

You wrote:
>Both OVRTAPF and CPYFRMTAP can use such parameters as the device, tape reels
>(label type & number of reels), record length, block length and block format.
>My questions are:

Its been a long while since I did any tape processing also ....

CPYFRMTAP (like all the other specialist CPYxxxx commands) is really a 
front-end to CPYF with unrelated keywords removed.  It effectively issues an 
override for the keywords you specify and everything else defaults to what is 
specified in the tape file.

>1.  If I am using an unmodified system-supplied tape file such as QTAPE or
>QSYSTAP is it necessary to do an OVRTAPF prior to a CPYFRMTAP?

Only if you want to alter attributes that CPYFRMTAP does not expose via a 
keyword.

>2.  If I don't specify OVRTAPF will CPYFRMTAP work if I specify parameters 
>that do not match the values defined in the tape file?

CPYFRMTAP overrides the tape file values according to what you specify on the 
command.

>3.  If I must specify OVRTAPF it is a safe assumption that all of the *TAPF
>defaults in CPYFRMTAP will utilize the overrides, also assuming the override
>scopes are set correctly?

I believe so but you'll need to verify this.  I think the values in the tape 
file, any overrides in effect, and any specified keywords on CPYFRMTAP are 
merged according to the usual rules of overrides.

Regards,
Simon Coulter.


 FlyByNight Software         AS/400 Technical Specialists       
 Eclipse the competition - run your business on an IBM AS/400.  
                                                                
 Phone: +61 3 9419 0175      Mobile: +61 0411 091 400           
 Fax:   +61 3 9419 0175      mailto: shc@flybynight.com.au      
                                                                
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