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如何查看Oracle用户的SQL执行历史记录？ - 数据库(内核) - 清泛网 - 专注C/...
...然这条语句很普通 但是需要的时候很管用 能够及时查出一个人执行sql语句情况
-------oracle 查看已经执行过的sql 这些是存在共享池中的 --------->
select * from v$sqlarea t order by t.LAST_ACTIVE_TIME desc
-----------查看oracle会话----------------...
How to delete from a text file, all lines that contain a specific string?
...D sed:
sed -i '/pattern to match/d' ./infile
Same, but for BSD sed (Mac OS X and FreeBSD) – does not work with GNU sed:
sed -i '' '/pattern to match/d' ./infile
To directly modify the file (and create a backup) – works with BSD and GNU sed:
sed -i.bak '/pattern to match/d' ./infile
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Microsecond timing in JavaScript
Are there any timing functions in JavaScript with microsecond resolution?
4 Answers
4
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How to load all modules in a folder?
...n the current folder and put them as __all__ variable in __init__.py
from os.path import dirname, basename, isfile, join
import glob
modules = glob.glob(join(dirname(__file__), "*.py"))
__all__ = [ basename(f)[:-3] for f in modules if isfile(f) and not f.endswith('__init__.py')]
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Static linking vs dynamic linking
Are there any compelling performance reasons to choose static linking over dynamic linking or vice versa in certain situations? I've heard or read the following, but I don't know enough on the subject to vouch for its veracity.
...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
... computer set, and the external source port on the router. The latter is chosen by the router, not the hosts. Since, internally, each host has a different IP address, there is no collision.
– Borealid
Apr 27 '14 at 1:39
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What is the difference between the kernel space and the user space?
...t mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn't entirely eliminate) their ability to do bad things like crashing the machine.
The kernel is the core of the operating system. It normally has full access to all memory and machine ...
Django - how to create a file and save it to a model's FileField?
...wkhtmltopdf's convert_to_pdf command. Thank you!!
– Nostalg.io
Sep 1 '16 at 4:53
In addition to this, I got an error i...
How to programmatically take a screenshot on Android?
... // image naming and path to include sd card appending name you choose for file
String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";
// create bitmap screen capture
View v1 = getWindow().getDecorView().getRootView();
v1.se...
What is the difference between new/delete and malloc/free?
... Can someone edit to elaborate regarding the "Free Store" as opposed to the heap? A process' heap is a well-known language-independent (?) operating-system-level concept; where does the "Free Store" come from?
– einpoklum
Feb 21 '16 at 15:26
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