SQL Developer on Mac - oracle-sqldeveloper

I have downloaded SQL Developer, but I can't login.
The error is:
The Network Adapter could not establish the connection.
Some pages recommend downloading Oracle Instant Client for MacOS, but I don't know how to configure it.

In order for SQL Developer to run, you should install JDK 1.8 or higher - did you do that? If not, here it is. As you've already downloaded SQL Developer, just double-click the icon and - hopefully, it'll work.

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How can I tell SQLDeveloper which version of JDBC to use?

I need to connect to an Oracle 9i server from my machine using SQLDeveloper. I already have a functioning version of SQLDeveloper 18.2 + Oracle Client 12 for more modern databases, but for this connection I want a separate older version of SQLDeveloper.
I've installed SQLDeveloper 3.2.20.09 in a separate folder on my machine and can launch it, but it defaults to finding the ojdbc6.jar file from Oracle Client 12. if I go to Help > About and select properties, the jdbc.library says jdbc.library /C:/app/client/product/12.1.0/client_1/jdbc/lib/ojdbc6.jar
and if I try to connect I get the error ORA-01460: unimplemented or unreasonable conversion requested
I tried putting the path to the SQL Developer 3.2 install first in the PATH variable, but no difference. Is there a way to tell SQL Developer which jdbc driver to use for Oracle ? (maybe in sqldeveloper.conf)
The official answer is:
use the jar (driver) we ship with the product OR
use a Thick Client, and we'll pull the jdbc driver from an Instant Client or Oracle HOME on your machine
The 2nd option will work so long as you don't try to go back back or forward in time to the point that the software will recognize/support the driver.
In other words, you can't tell SQL Developer 18.x to use a 9i Home, we have a hard dependency to require at least a 11gR2 client (I believe, it could actually be a 12c based client which is required).
You'd be better off getting your data out of that ancier 9i Database and into a modern 12 or 19c Oracle instance.
but it defaults to finding the ojdbc6.jar file from Oracle Client 12.
Sounds like you've managed to get a thick connection defined, go into preferences and disabled on the advanced page any reference to OCI or Thick, then it will use the jdbc driver shipped with SQLDev.

Find and Update XMPP version on ubuntu server running Openfire

This question may sound absurd as I am totally new to XMPP & Openfire. I have a setup of Openfire 4.2.3 in Ubuntu 18.0.4 LTS that being used in my android chat app. During testing I received a Timeout error. While investigating the issue I found the solution rely on the XMPP updated version, check this link for more info.
Well I tried my best to find out my XMPP version and how to update it. Unfortunately I didn't find anything on it. So, I have two obvious questions here:
How to check XMPP version my Openfire is running on?
How to update XMPP version on my existing Openfire setup?
Since you are able to use the web-interface, just log in. On the start page look for the server properties. Theres the version.
For upgrading follow these steps:
To stop openfire on ubuntu: /etc/init.d/openfire stop;
Backup copy of the openfire installation directory: /usr/share/openfire;
Backup Openfire Base in Postgres: If you use the pgAdmin application, right-click on openfire base and click “Backup”. To run backup, it can be with own postgres as user. I recommend tar format, and encoding “SQL_ASCII”.
To install the new version: you can actually use the “dpkg -i” command, you will be asked if you want to keep your current version (choose this one), but you will still upgrade (option N or O - keep your currently -installed version).
On the java, has a statement informing that from version 4.3 will be necessary Java 8 installed.
Source: https://discourse.igniterealtime.org/t/update-openfire-4-1-6-to-4-2-1-in-ubuntu-server/80336
And if you really meant the "XMPP-Version". There is not really such a thing. XMPP is implemented to a different extend on different server-providers. Some have more extensions, some less.
To see which ones you have, refer to the wikipedia site:
https://en.wikipedia.org/wiki/Comparison_of_XMPP_server_software

SQL Developer will not start on Windows 8.1

I have been trying to install Oracle SQL Developer on my 64bit Windows 8.1 machine. I have tried to install it with the embedded jdk and without the jdk. when I remove Java and I start SQL Developer it comes up and asks for the location of Java, I then tell it where it is. In either situation when starting SQL Developer it come up and starts to install for about 10 seconds, the progress bar says loading and the SQL Developer screen goes away with no errors and no explaniation. I have been trying this for days. I have removed and redownloaded all files and I get the same result.
Please if anyone can help I would be grateful. I need this for my course and I am unable to get anything completed.
Thank you for any help you can provide.
I had the same problem. I created an account with Oracle, accept the Terms and licences agreement. Search for the version you are trying to install and make sure it is the right one for the OS, 32 OR 64 bits with JDK 8. After extracting the files make sure you run as Admin, your SQL will complete installing. When you are installing they go into a default folder in C-drive or you can choose the path. Hope it helps.

Odoo: Internal Server Error

I've installed Odoo 9.0 on Ubuntu 14.04, and I've activated the developer mode to install module from App Store. Every app I try to install that doesn't belong to the 31 apps offered by default without accessing developer mode, I get this error:
Internal Server Error
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.
It looks like this happens only on the local installation. i tried to install the Barcode app in online trial, and I encoutered no problems.
If anyone may help me, I'll be eternaly grateful.
Anyway, I'm pretty sure that the app on the "App store" provided in Odoo (not the ones that is possible to download in zip and add to addons), are only for the enterprise version.
I tried in a lot of computers and different installation with no luck.
Still happenning as of today. I've been able to manually install the module I wanted:
Go to the app store web site: https://apps.openerp.com/apps/modules
Search for and download your module
unzip the archive in the addons directory of your odoo installation
Go in odoo, settings, update modules list
you can then look for it in Local Modules. You may need to remove all filters. I've done this in v8.

Oracle SQL Developer 4.1.3 not loading in Windows 10

I've recently downloaded Oracle SQL Developer 4.1.3 from Oracle Website
and this with JDK as well, but I tried to run in windows 10, it only goes 10% of progress bar, then disappeared. Can't run it at all?
SQL Developer 4.1.3 can connect to Oracle 11g db, right?
I've found 2 things most likely cause what you're experiencing:
video driver conflict with windows and Java - this is usually what happens to cause the program to just 'disappear.' If you open a CMD window, CD to your sqldeveloper\bin directory, and run the exe from there, you should see some sort of Java 'crash' stack when the GUI goes away suddenly. And in there, you'll see a reference to a windows dll that belongs to the video driver. if that's the case, update that driver, and you should be good
the application settings for your OS user are corrupted. To fix, find your AppData, Roaming Profiles folder for 'SQL Developer' - there should be a system4.1.3... folder in there - rename it, and restart sql developer.

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