Oracle-L: RE: Why DB_Name 4 chars only.

From: Gene Sais <Gsais_at_co.palm-beach.fl.us>
Date: Tue, 30 Jul 2002 13:17:41 -0800
Message-ID: <F001.004A6944.20020730131741@fatcity.com>

My std. also, 4 chars for db with last char denoting db use (Production, Test, Development, Training, etc.). I started on VMS Oracle 6, seemed to be the case back then, still hold to it. I used to have dns aliases for db names, VMS node name limit was 6 chars. For example:

Payroll DB Names

¯-------------------
payp=Prod

payt=Test
payd=Development
...

Payroll DB Server Names

¯---------------------------
paypdb=Prod DB Server DNS Alias

paytdb=Test DB Server DNS Alias
payddb=Development DB Server DNS Alias
...

This worked well before oracle names. Move a db, make a DNS change, done. Old habits are hard to break, never had a need to :)

fwiw,
Gene

>>> rlsmith_at_kmg.com 07/30/02 04:22PM >>> We have SIDs 9 chars long!

Ron SMith

-----Original Message-----
Sent: Tuesday, July 30, 2002 3:08 PM
To: Multiple recipients of list ORACLE-L

Hi,
What is the reason behind DB_Name/SID usually 4 chars length only. I have a customer who is asking us to create instance/db with 6 chars length. We usually keep instance name and db_name parameters same in .ora file. Can someone please explain the reason behind db_name 4 chars only. Is it a common practice to keep SID/db_name/instance name parameters same (for example PBDS). thanks
Srinivas

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Author: Srinivas
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Author: Smith, Ron L.
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Author: Gene Sais
INET: Gsais_at_co.palm-beach.fl.us

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