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To prevent a memory leak, the JDBC Driver has been forcibly unregistered
...ot auto-deregister itself during webapp's shutdown. This message is purely informal, Tomcat has already taken the memory leak prevention action accordingly.
What can you do?
Ignore those warnings. Tomcat is doing its job right. The actual bug is in someone else's code (the JDBC driver in question...
How to show Page Loading div until the page has finished loading?
...id="loading">
<img id="loading-image" src="images/ajax-loader.gif" alt="Loading..." />
</div>
Then add the style class for the div and image to your CSS:
#loading {
width: 100%;
height: 100%;
top: 0;
left: 0;
position: fixed;
display: block;
opacity: 0.7;
backgrou...
How can I put a database under git (version control)?
...
I didn't find relevant info on the databaserefactoring site... It appears to list various refactoring techniques for DB code (like Fowler did for regular code)
– Nickolay
Aug 16 '18 at 13:26
...
What is a columnar database?
...several are build upon traditional, row-oriented, DBMS, simply storing the info in tables with one (or rather often two) columns (and adding the necessary layer to access the columnar data in an easy fashion).
How do they differ from relational databases?
They generally differ from traditional (row...
Remove/Add Line Breaks after Specific String using Sublime Text
...break
and Windows/Linux (untested):
Control+F > type string > Alt+F3 > ESC > Right Arrow > line break
The important part being Control+Command+G to select all matches.
Once you've selected the text you're looking for, you can use the provided multiple cursors to do whatever t...
How do I make a reference to a figure in markdown using pandoc?
... is preferable in the PDF as output case.
– Zelphir Kaltstahl
Sep 21 '16 at 20:26
2
It is possibl...
What is the list of valid @SuppressWarnings warning names in Java?
...remember.
Just go to the location where you have the warning and type Alt-Enter
(or select it in the Inspections list if you are seeing it there).
When the menu comes up, showing the warning and offering to fix it for
you (e.g. if the warning is "Method may be static" then "make static"
...
What does the brk() system call do?
...ut brk/sbrk?
Why does calling sbrk(0) twice give a different value?
More info
Internally, the kernel decides if the process can have that much memory, and earmarks memory pages for that usage.
This explains how the stack compares to the heap: What is the function of the push / pop instructions u...
Getting Chrome to accept self-signed localhost certificate
...digitalSignature, nonRepudiation, keyEncipherment, dataEncipherment
subjectAltName = @alt_names
[alt_names]
DNS.1 = $NAME # Be sure to include the domain name here because Common Name is not so commonly honoured by itself
DNS.2 = bar.$NAME # Optionally, add additional domains (I've added a subdomain...
How to lock orientation during runtime
...
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
Called on an activity, will lock it to landscape. Look for the other flags in the ActivityInfo class. You can lock it back to portrait or make it sensor/slider driven.
More info here: ...