RE: Hyphenated user names

From: Jeff Smith <>
Date: Thu, 9 May 2019 07:21:57 -0700 (PDT)
Message-ID: <b16afc13-6195-468d-9204-ca6a119d9166_at_default>

You can do many things…you shouldn’t do most of them.


We’re building a list of ‘things you should NOT do in an Oracle Database’ – creating objects which require quoting is definitely one of those things.





From: Patrice sur GMail <> Sent: Thursday, May 9, 2019 10:19 AM
To: Adric Norris <> Cc: ORACLE-L <> Subject: Re: Hyphenated user names




I don't believe using quotation marks is practical for our users, they are connecting using an Oracle Forms app and we want their lives to be as simple as possible.


On Thu, May 9, 2019, 11:15 Adric Norris <HYPERLINK ""> wrote:

You actually can connect using such a username, but it's a bit of a PITA due to the quoting requirements.


[SYSTEM_at_test ] SQL> create user "test-user" identified by "boGus1234%";

User created.

[SYSTEM_at_test ] SQL> grant create session to "test-user";

Grant succeeded.

[SYSTEM_at_test ] SQL> select username from dba_users where lower(username) like 'test%';



[SYSTEM_at_test ] SQL> conn "test-user"/boGus1234%_at_test


Specifying credentials on the command line may require nested quotes (likely depending upon platform), since the shell removes the outermost set before launching the client.


$ sqlplus '"test-user"_at_testdr'

SQL*Plus: Release - Production on Thu May 9 09:11:09 2019 Version

Copyright (c) 1982, 2018, Oracle.  All rights reserved.

Enter password:
Last Successful login time: Thu May 09 2019 09:09:08 -05:00

Connected to:
Oracle Database 12c Enterprise Edition Release - 64bit Production With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP, Advanced Analytics and Real Application Testing options


Not that I'd actually recommend doing this... but it is possible.


On Thu, May 9, 2019 at 8:08 AM Patrice sur GMail <HYPERLINK ""> wrote:

We discovered it is possible to create hyphenated usernames if quotation marks are used, but then people cannot connect.


For now I am recommending they come up with different usernames or use _ instead of -.


Maybe ASCII should not have conflated the hyphen and the minus sign but I suppose they were building on the typewriter keys back then.


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Received on Thu May 09 2019 - 16:21:57 CEST

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