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Why are Oracle table/column/index names limited to 30 characters?
...characters.
This is a new feature in 12.2, according to (http://blog.dbi-services.com/oracle-12cr2-long-identifiers/). According to that post, 12.1 was still limited to 30 characters.
Edit: Here's a link to the official Oracle documentation explaining the change. (https://docs.oracle.com/cloud/...
When to dispose CancellationTokenSource?
...turned out that CancellationTokenSource was the problem.
My project has a service, that is constantly reading database and fires off different tasks, and I was passing linked cancellation tokens to my workers, so even after they had finished processing data, cancellation tokens weren't disposed, wh...
How to use SSH to run a local shell script on a remote machine?
...est
ls
ENDFTP
END2
ENDSSH
You can actually have a conversation with some services like telnet, ftp, etc. But remember that heredoc just sends the stdin as text, it doesn't wait for response between lines
Edit: I just found out that you can indent the insides with tabs if you use <<-END !
s...
What's the difference between a POST and a PUT HTTP REQUEST?
...llows a client to get information about the request methods supported by a service. The relevant response header is Allow with supported methods. Also used in CORS as preflight request to inform server about actual request method and ask about custom headers.
HEAD: Returns only the response headers....
What Every Programmer Should Know About Memory?
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Eclipse interface icons very small on high resolution screen in Windows 8.1
...n
Click on "properties"
Select the "compatibility" tab
Choose "Windows XP (Service Pack 3)" for "Run this program in compatibility mode for:".
Everything seems to work fine and the display looks good (if a bit blurry/pixelly). The only difference i can see is that the title bar is in Windows XP s...
In MVVM should the ViewModel or Model implement INotifyPropertyChanged?
...lement the interface. As an example, what if I have non-UI logic such as a service that when it receives a Bid or Ask price for a given value it issues an alert (ex. through an email) or places an order? This could be a possible clean solution.
However, there are different ways of achieving things,...
What's the Point of Multiple Redis Databases?
...g multiple databases on a single instance. I guess it's useful if multiple services use the same database server(s), so you can avoid key collisions.
I would not recommend building around using the KEYS command, since it's O(n) and that doesn't scale well. What are you using it for that you can acco...
Close and Dispose - which to call?
...e threads Is SqlCommand.Dispose enough? and Closing and Disposing a WCF Service I am wondering for classes such as SqlConnection or one of the several classes inheriting from the Stream class does it matter if I close Dispose rather than Close?
...
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...e user to view.
// Examples of where you should probably use a service instead:
// * Downloading files for the user to save (like the browser does).
// * Sending messages to people.
// * Uploading data to a server.
for (int i = 0; i < 10...