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Home -> Community -> Mailing Lists -> Oracle-L -> Re: security without using different usernames
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RE: upgrade to AIX 5Ryan,
It's alter session set current_schema =3D name;
Tanel.
I know this is terrible design, but the GUI was created by a software = engineering group that is seperate from the database group. Its not = scalable. So Im trying to come up with a more scalable method. I have no = power to change their gui. It rides on the database. I have to live with = it. This is not a high enough transaction database to warrant seperate = instances.=20
We have a variety of customers. Each of them has their own versions of = data. However, the schema is exactly the same. These tables can get = huge, so we dont want to throw them all into the same schema.
Right now, due to the fact that the GUI has a series of logins that = are the same across clients, each client has its own instance. This isnt = very scalable as we get more business. We have to create another = instance and ingest data to it.=20
Id like to find a way to get all the clients in the same instance with = just different schemas and tablespaces. One thing I may have control = over would be to slightly rename the executable. If you check v$session, = in a client-server application the name of the product connecting to the = database is recording. I can handle security based off of that.=20
My question is what would be the best way? Cant do synonyms for this = since its the same login. I think I saw somewhere that there is a = session based 'set' command where you can say use this schema. I think = it was on asktom and in reference to a question about public synonyms. I = cant find it. Anyone know it?=20
Also is it viable to base a context off of what is in v$sesion with a = logon trigger? How would I 'redirect' all queries to a specific schema?
To stress, I cant change the application. Different group with =
different skillsets. Any suggestions?
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD><TITLE>RE: upgrade to AIX 5</TITLE> <META http-equiv=3DContent-Type content=3D"text/html; =charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2800.1141" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Ryan,</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>It's alter session set current_schema ==3D=20
name;</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Tanel.</FONT></DIV><BLOCKQUOTE dir=3Dltr=20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>My question is what would be the best =
way? Cant=20
do synonyms for this since its the same login. I think I saw somewhere =
that=20
there is a session based 'set' command where you can say use this =
schema. I=20
think it was on asktom and in reference to a question about public =
synonyms. I=20
cant find it. Anyone know it? </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Also is it viable to base a context =
off of what=20
is in v$sesion with a logon trigger? How would I 'redirect' all =
queries to a=20
specific schema?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>To stress, I cant change the =
application.=20
Different group with different skillsets. Any suggestions?=20
Received on Tue Jul 15 2003 - 17:10:57 CDT
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