dbTalk Databases Forums  

D3 open files

comp.databases.pick comp.databases.pick


Discuss D3 open files in the comp.databases.pick forum.



Reply
 
Thread Tools Display Modes
  #1  
Old   
MAV
 
Posts: n/a

Default D3 open files - 05-19-2011 , 05:46 AM






Hi all!

How I can know the number of files currently open on a D3 system?
Is there a D3 command to display the files currently open on the
system as LIST.FILES in QM?

Regards,

Marcos Alonso Vega

Reply With Quote
  #2  
Old   
Douglas Tatelman
 
Posts: n/a

Default Re: D3 open files - 05-19-2011 , 09:52 AM






My understanding is that Pick files are not "open' in a true I/O
sense.

When you open a file in BASIC, you're simply reading the base from the
MD.

Therefore, the system really doesn't know how many times you've done
this.



On May 19, 3:46*am, MAV <alonv... (AT) hotmail (DOT) com> wrote:
Quote:
Hi all!

How I can know the number of files currently open on a D3 system?
Is there a D3 command to display the files currently open on the
system as LIST.FILES in QM?

Regards,

Marcos Alonso Vega

Reply With Quote
  #3  
Old   
Scott Ballinger
 
Posts: n/a

Default Re: D3 open files - 05-19-2011 , 05:49 PM



Well, it knows about open files somehow: I don't think D3 will let you
delete or move a file if someone has it open. Probably a bit in the
FCB (which is either the 1st or last frame in the filespace?). And
there is an opened counter in the file-of-files.

/Scott Ballinger
Pareto Corporation
Edmonds WA USA
206 713 6006

On May 19, 7:52*am, Douglas Tatelman <doug... (AT) pickteam (DOT) com> wrote:
Quote:
My understanding is that Pick files are not "open' in a true I/O
sense.
When you open a file in BASIC, you're simply reading the base from the
MD.
Therefore, the system really doesn't know how many times you've done
this.

Reply With Quote
  #4  
Old   
Douglas Tatelman
 
Posts: n/a

Default Re: D3 open files - 05-19-2011 , 07:26 PM



Scott,

I do believe you're right.

On May 19, 3:49*pm, Scott Ballinger <scott.ballin... (AT) gmail (DOT) com> wrote:
Quote:
Well, it knows about open files somehow: I don't think D3 will let you
delete or move a file if someone has it open. Probably a bit in the
FCB (which is either the 1st or last frame in the filespace?). And
there is an opened counter in the file-of-files.

/Scott Ballinger
Pareto Corporation
Edmonds WA USA
206 713 6006

On May 19, 7:52*am, Douglas Tatelman <doug... (AT) pickteam (DOT) com> wrote:







My understanding is that Pick files are not "open' in a true I/O
sense.
When you open a file in BASIC, you're simply reading the base from the
MD.
Therefore, the system really doesn't know how many times you've done
this.

Reply With Quote
Reply




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off



Powered by vBulletin Version 3.5.3
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.