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How SID is different from Service name in Oracle tnsnames.ora

...ich this instance connects. You can specify multiple services names in order to distinguish among different uses of the same database. For example: SERVICE_NAMES = sales.acme.com, widgetsales.acme.com You can also use service names to identify a single service that is availab...
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unable to print object ('po') in xcode6 beta 6 osx swift project: (Error in auto-import: failed to g

...has a VERY easy workaround. So, this is just me posting the fix here, in order to maximize the probability that someone else does a search for this confusing error message, and finds this answer. So, here it is. In our case, we had an Objective-C project using a mix of Swift and Objective-C frame...
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Enter triggers button click

...is a <input type="submit"> . The buttons appear on the page in that order. If I'm in a text field anywhere in the form and press <Enter> , the button element's click event is triggered. I assume that's because the button element sits first. ...
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Type-juggling and (strict) greater/lesser-than comparisons in PHP

...tors deviate from the computer-scientific definitions in several ways: In order to constitute an equivalence relation == has to be reflexive, symmetric and transitive: PHP's == operator is not reflexive, i.e. $a == $a is not always true: var_dump(NAN == NAN); // bool(false) Note: The fact that...
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Append a dictionary to a dictionary [duplicate]

...itional copy merging both, you create a lookup chain that searches both in order. Because it doesn't duplicate the mappings it wraps ChainMap uses very little memory, and sees later modifications to any sub-mapping. Because order matters you can also use the chain to layer defaults (i.e. user prefs ...
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Global variables in Java

...ggest your rename your class from Global to something else (TestClass?) in order not to give people the impression that there is such a thing as a Global Java keyword. Better safe than sorry :) – Nicolas Rinaudo Jul 25 '13 at 13:36 ...
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How to make ruler always be shown in Sublime text 2?

...ces -> Settings-User and change "rulers": [], to "rulers": [80], in order to display one ruler at column 80. Now for the rub, it seems that one must use a monospaced font in order to display rulers so you'll also need to change "font_face": "", to "font_face": "Monospace", or any other m...
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How to retrieve the current value of an oracle sequence without increment it?

...t updates to the record, you need to have a way to extract that value. In order to make sure you get the right one, you might want to wrap the INSERT and RonK's query in a transaction. RonK's Query: select MY_SEQ_NAME.currval from DUAL; In the above scenario, RonK's caveat does not apply since ...
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How to add 'ON DELETE CASCADE' in ALTER TABLE statement

... where constraint_name = theCons and owner = theOwner order by position; firstCol BOOLEAN := TRUE; begin -- For each constraint FOR cons IN (select * from user_constraints where delete_rule = 'NO ACTION' and constraint_name not l...
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The request was aborted: Could not create SSL/TLS secure channel

... I can't believe something as silly as initialization order solved this problem for me. SMH. Thanks @horgath45!! – Steve H. May 2 at 1:51 ...