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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

...e installed Oracle 11g Express Edition Release 2 in my windows 7 64 bit OS and tried to execute JDBC program, then I got the following error: ...
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How do I read all classes from a Java package in the classpath?

...ingMetadataReaderFactory(resourcePatternResolver); List<Class> candidates = new ArrayList<Class>(); String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + resolveBasePackage(basePackage) + "/" + "**/*.class"; Resource[] r...
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How do I install an R package from source?

... If you have the file locally, then use install.packages() and set the repos=NULL: install.packages(path_to_file, repos = NULL, type="source") Where path_to_file would represent the full path and file name: On Windows it will look something like this: "C:\\RJSONIO_0.2-3.tar.gz...
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Are single quotes allowed in HTML?

...es in HTML become so popular?. Single quotes around attributes in HTML are and always have been permitted by the specification. I don't think any browsers wouldn't understand them. share | improve t...
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Mix Razor and Javascript code

I'm pretty confused with how to mix razor and js. This is the current function I am stuck with: 7 Answers ...
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Ignoring accented letters in string comparison

I need to compare 2 strings in C# and treat accented letters the same as non-accented letters. For example: 6 Answers ...
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symfony 2 twig limit the length of the text and put three dots

How can I limit the length of the text, e.g., 50, and put three dots in the display? 13 Answers ...
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How to switch a user per task or set of tasks?

...ng theme that's in my ansible playbooks is that I often must execute a command with sudo privileges ( sudo: yes ) because I'd like to do it for a certain user. Ideally I'd much rather use sudo to switch to that user and execute the commands normally. Because then I won't have to do my usual post com...
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How to test if a string is JSON or not?

I have a simple AJAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message. ...
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How do I convert a datetime to date?

... To get in UTC which can be very helpful --> datetime.datetime.utcnow() and correspondingly datetime.datetime.utcnow().date() – Nick Brady Mar 7 '16 at 22:51 2 ...