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Oracle's client internals

From: Erwin Dondorp <erwin_at_pcssdc.pttnwb.nl>
Date: Thu, 9 Dec 1993 16:59:30 GMT
Message-ID: <1993Dec9.165930.1264_at_pttdis.pttnwb.nl> 






Hi,



I have no intention of rewriting any Oracle client tool completelly,
but I was wondering about the following question:


- Can every single oracle client product potentially be rewritten


  from scratch by a skilled person with Pro*C ?



I find at least the following problems:


- How does a client know in the case of a syntax error at what


  position this error is? (does it do the parsing also?)


- How does a client know the version string that it prints


  after you succesfully logged in?


  In mean the text:

     Connected to: ORACLE7 Server Release 7.0.13.1.0 - Production
     PL/SQL Release 2.0.15.1.0 - Production


  This is information that the client gets from the server!,
  how can user written clients get these strings?


- How does a client decide whether it is sending a SELECT statement


  or an other statement? (does it look at the text? other?)



Thanks,

-- 
Erwin Dondorp			Xirion bv, Software and Consultancy
erwin_at_xirion.nl			Burg. Verderlaan 15X
Currently at work at: 		3454 PE  De Meern
  PTT-T-NWB-NWO-PCS-SDC 	the Netherlands
  070-3433613			Phone: +31 (0)3406-61990  Fax: 61981

Een heer van stand is geen nummer! (OBB)


Received on Thu Dec 09 1993 - 17:59:30 CET












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