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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/...
...只是个取样数据，按秒进行，只有在那一秒采样点处于on cpu或非idle等待的session统计在内。所以可能会不全，有些执行很短的SQL会忽略。这个视图无法还原完整的session历史。
#v$sqlarea中有执行过的SQL语句，但并无到session的关联...
Why is semicolon allowed in this python snippet?
...answered Nov 23 '11 at 1:52
André CaronAndré Caron
39.9k99 gold badges5555 silver badges117117 bronze badges
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Why is an int in OCaml only 31 bits?
...for a simple integer.
Also, you cannot pass such an integer object to the CPU to perform fast integer arithmetic. If you want to add two integers, you really only have two pointers, which point to the beginning of the object headers of the two integer objects you want to add. So, you first need to ...
What's the difference between utf8_general_ci and utf8_unicode_ci?
...ligible. It was devised in a time when servers had a tiny fraction of the CPU performance of today's computers.
Benefits of utf8mb4_unicode_ci over utf8mb4_general_ci
utf8mb4_unicode_ci, which uses the Unicode rules for sorting and comparison, employs a fairly complex algorithm for correct sortin...
What are forward declarations in C++?
...answered Jan 21 '11 at 10:18
René NyffeneggerRené Nyffenegger
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Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
... a lot of activity going on under the hood of the OS, which can steal some CPU time and slow down the execution of your code. That’s why it is best to execute the tests multiple times and then remove the lowest and the highest times. For that puprose it is a good solution to have a method that exe...
Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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stack.toArray() might be very expensive, cpu, time and memory wise. a Solution that iterates over the original collection/iterable would probably be less resource consuming.
– AlikElzin-kilaka
Feb 14 '19 at 10:24
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What exactly is a Context in Java? [duplicate]
... boils down that it manages and controls inner parts of the entire device (CPU/HDD/RAM/GPU/etc) without that the enduser has to worry about. In case of Android, as per the linked Javadoc "It allows access to application-specific resources and classes, as well as up-calls for application-level operat...
Convert a RGB Color Value to a Hexadecimal String
...teger.valueOf(color.getRGB() & 0x00FFFFFF));
– Stéphane Millien
Feb 12 at 18:21
This results in class java.util.I...
How to convert An NSInteger to an int?
...2-bit platforms, and a long on 64-bit platforms.
– Frédéric Adda
Mar 11 '14 at 22:16
5
I get a ...