December 2010
Intermediate to advanced
451 pages
11h 16m
English
Content preview from Oracle and PL/SQL Recipes: A Problem-Solution Approach
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2-7. Obtaining Environment and Session Information
Problem
You want to obtain environment and session information such as the name and IP address of the current user so that the values can be stored into local variables for logging purposes.
Solution
Make use of the SYS_CONTEXT built-in function to query the database for the user's information. Once you have obtained the information, then store it into a local variable. At that point, you can do whatever you'd like with it, such as save it in a logging table. The following code block demonstrates this technique:
<<obtain_user_info>>
DECLARE
username varchar2(100);
ip_address varchar2(100);
BEGIN
SELECT SYS_CONTEXT('USERENV','SESSION_USER'), SYS_CONTEXT('USERENV','IP_ADDRESS') INTO ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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