大约有 40,000 项符合查询结果（耗时：0.0589秒） [XML]
ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...
I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid service name in your database. To find out valid service names, you can use the following query in oracle:
select value from v$parameter where name='service_names'
Once I updated tnsnames.ora to:
TEST =
...
Does ruby have real multithreading?
...
Olivier De Meulder
2,40233 gold badges2323 silver badges2929 bronze badges
answered Sep 11 '08 at 22:25
Jörg W MittagJörg W Mittag
...
What is the standard way to add N seconds to datetime.time in Python?
Given a datetime.time value in Python, is there a standard way to add an integer number of seconds to it, so that 11:34:59 + 3 = 11:35:02 , for example?
...
What is an undefined reference/unresolved external symbol error and how do I fix it?
...Preprocessing directives are executed, macro invocations are expanded, and _Pragma unary operator expressions are executed. [SNIP]
Each source character set member in a character literal or a string literal, as well as each escape sequence and universal-character-name
in a character literal or a non...
Determine project root from a running node.js application
...e
Because module provides a filename property (normally equivalent to __filename), the entry point of the current application can be obtained by checking require.main.filename.
So if you want the base directory for your app, you can do:
var path = require('path');
var appDir = path.dirname(r...
How to use the same C++ code for Android and iOS?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...
When to make a type non-movable in C++11?
...
sbi
198k4444 gold badges232232 silver badges423423 bronze badges
answered Jan 13 '13 at 14:52
Jonathan WakelyJonathan Wakely
...
ggplot with 2 y axes on each side and different scales
...
32
@hadley I am sorry, I do not see what is problematic with the given climate diagram. Putting temperature and precipitation in one diagram (...
Is it better practice to use String.format over string Concatenation in Java?
Is there a perceptible difference between using String.format and String concatenation in Java?
14 Answers
...
Validate that a string is a positive integer
... a JavaScript integer to be a value of maximum 4294967295 (i.e. Math.pow(2,32)-1), then the following short solution will perfectly work:
function isPositiveInteger(n) {
return n >>> 0 === parseFloat(n);
}
DESCRIPTION:
Zero-fill right shift operator does three important things:
t...