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Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...ile
进入ORLACE
sqlplus /as sysdba
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC
---------- ---------- ---------- ---------- ---------- ---------- ---
STATUS FIRST_CHANGE# FIRST_TIME NEXT_CHANGE# NEXT_TIME
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Is there a “goto” statement in bash?
Is there a "goto" statement in bash ? I know It is considered bad practice, but I need specifically "goto".
12 Answers
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print call stack in C or C++
Is there any way to dump the call stack in a running process in C or C++ every time a certain function is called? What I have in mind is something like this:
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How to Parse Command Line Arguments in C++? [duplicate]
What is the best way of parsing command-line arguments in C++ if the program is specified
to be run like this:
10 Answers
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How can I get a precise time, for example in milliseconds in Objective-C?
Is there an easy way to get a time very precisely?
11 Answers
11
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What is the purpose of std::make_pair vs the constructor of std::pair?
...air with the type of the elements that are passed to it, without you needing to tell it. That's what I could gather from various docs anyways.
See this example from http://www.cplusplus.com/reference/std/utility/make_pair/
pair <int,int> one;
pair <int,int> two;
one = make_pair (10,20...
How do I check if a list is empty?
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if not a:
print("List is empty")
Using the implicit booleanness of the empty list is quite pythonic.
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Android buildscript repositories: jcenter VS mavencentral
The last time I used Android Studio, it generated .gradle files with mavencentral() buildscript repositories whereas now there's jcenter() .
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Haskell Type vs Data Constructor
I am learning Haskell from learnyouahaskell.com . I am having trouble understanding type constructors and data constructors. For example, I don't really understand the difference between this:
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How to copy from current position to the end of line in vi
I use gvim in windows. How to copy text from current position to the end of line in vi and paste it in another file opened in vi. I googled it but cant find any solution for this. Appreciate any help on this. Thank you.
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