Re: Problem: Forming URL for Web Server 1.0
Date: 1997/02/12
Message-ID: <330121f0.2192893_at_nntp.mediasoft.net>#1/1
On 11 Feb 1997 11:30:56 GMT, "Abteilung AI" <bruhn_at_wu-wien.ac.at> wrote:
>Hi,
>
>this is probably a stupid question, but I cannot make out how to form a
>proper URL to access stored procedures on Web Server 1.0 and Oracle 7.3.2
>
>I thought an URL to access a stored procedure was formed like:
>http://<server-name>/<virtual path>/<web agent service>/owa/<procedure>
>
That is correct but maybe more clear as:
http://<server-name>/<OPTIONAL part of virtual path>/<web agent service part of virtual path>/owa/<procedure>
>So I have installed the demo application hr. I have used a virtual path
>called hr and a new web agent service called hr. Everything works fine with
>the following URL:
>http://miss:8889/hr/owa/hr.tree
In this one, miss:8889 ids the server,
/hr is the web agent service (no virtual path needed nor supplied in this case)
owa is the owa executable found in $ORACLE_HOME/ows/bin
hr.tree is the procedure to run.
>So what is hr here? The virtual path? The web agent-service?
both.
In webserver 1, owa is a cgi executable located in $ORACLE_HOME/ows/bin. It uses standard cgi environment variable to figure out what to do. For example, given the following URL:
http://myhost/foo/bar/hr/owa/hr.tree
and the following virtual directory mapping:
/foo/bar/hr -> $ORACLE_HOME/ows/bin
You would find that the following environment variables are set:
PATH_INFO=/hr.tree
SCRIPT_NAME=/foo/bar/hr/owa
PATH_TRANSLATED=$ORACLE_HOME/ows/bin/owa
Path_info is used to figure out what procedure to run.
Script_name is used to find the web agent name (it looks at script name and works backwards through it to find the string in front of /owa. thats the web agent name)
Path_translated is the actual name of the program the web server ran.
If, on the other hand, you had:
and mappings
/hr -> $ORACLE_HOME/ows/bin
you would find:
PATH_INFO=/hr.tree
SCRIPT_NAME=/hr/owa
PATH_TRANSLATED=$ORACLE_HOME/ows/bin/owa
Again, apply the same rules to parsing the environment and you end up with the same procedure and web agent.
>
>Then I have tried to rename the web agent service from hr to hrnew (and
>restarted the listener). I could not find any URL to access the data.
>Either the listener reported "URL unknown" or the web agent service
>returned "Service not available, try again later".
>
To do this you would need to
- create a web agent named hrnew OR have an owa_default_service web agent
- map a directory such that the virtual directory is /hrnew and the physical path is $ORACLE_HOME/ows/bin
Then, restart the listener....
>Then I have tried to rename the virtual path to hrnew and the web agent
>service to hr. Same result: cannot find a working URL.
>
>I cannot beleive that the virtual path must equal the web agent service
>name. And if so, how can I use the default web agent?
>
the default web agent will be used when
- you map a virtual path (eg: /a/b/c) to the physical path $ORACLE_HOME/ows/bin
- you use the url /a/b/c/owa/xxx
- there exists no entry for c in the web agent listing. Then the owa program will look for an entry named owa_default_service and use the connection information there.
>Thank you very much for your kind help,
>Peter (bruhn_at_wu-wien.ac.at)
>
Thomas Kyte
Oracle Government
tkyte_at_us.oracle.com
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statements and opinions are mine and do not necessarily reflect the opinions of Oracle Corporation Received on Wed Feb 12 1997 - 00:00:00 CET