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Oracle PL/SQL ACOS function example
The ACOS() function returns the arc cosine of input n, the input n must be in the range of -1 to 1. The function will return a value in the range of 0 to pi, expressed in radians.
Date: 2019-08-11 View: 1307
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Oracle PL/SQL FLOOR function example
The FLOOR() function round the specified number down, and return the largest number that is less than or equal to the specified number.
Date: 2019-08-11 View: 1397
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Oracle PL/SQL CEIL function example
The CEIL function round the specified number up, and return the smallest number that is greater than or equal to the specified number.
Date: 2019-08-11 View: 1345
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Oracle PL/SQL ATAN and ATAN2 function example
This article show you how to use ATAN() and ATAN2() function in Oracle PL/SQL.
Date: 2019-08-11 View: 1275
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Oracle PL/SQL ALTER function example
The ALTER FUNCTION statement explicitly recompile a standalone function. Sometimes, ALTER TABLE on the table being used in function will cause the function becomes INVALID, we need to recompile (alter function) it to make it VALID again.
Date: 2019-08-11 View: 1762
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MongoDB Failed to unlink socket file /tmp/mongodb-27017
Upgraded MongoDB and unable to start the mongod process, review the /var/log/mongodb/mongod.log file, and found the following error messages :
Date: 2019-08-11 View: 2454
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MongoDB bind() failed errno:99 Cannot assign requested address for socket
Review the server environment, we need to allow Server B to access the Server A MongoDB database.
Date: 2019-08-11 View: 1705
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Mac OSX What is the difference between /etc/hosts and /private/etc/hosts
They are the same file, /etc map to /private/etc
Date: 2019-08-11 View: 1195
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How to edit hosts file on Mac OSX
Edit this file /private/etc/hosts.
Date: 2019-08-11 View: 1349
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MongoDB Where is the log file?
Default, MongoDB creates the log file at this path /var/log/mongodb/mongodb.log, if the log file is not found, please check with the MongoDB config file.
Date: 2019-08-11 View: 1371
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Gradle Could not find method compileOnly
Git clone a new project, Gradle build and hits the following error message :
Date: 2019-08-11 View: 1957
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Oracle PL/SQL BITAND function example
The BITAND function treats its inputs and its output as vectors of bits, the output is the bitwise AND of the inputs.
Date: 2019-08-11 View: 1455
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Oracle PL/SQL CREATE function example
This article will help you to understand how to create a user defined function. It’s also known as stored function or user function.
Date: 2019-08-11 View: 1225
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Mac OSX where is default localhost folder?
On Mac OSX, the default localhost folder is located at /Library/WebServer/Documents
Date: 2019-08-11 View: 1300
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Mac OSX Redirect .htaccess is not working ?
Here is the .htaccess file.
Date: 2019-08-11 View: 1468
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