can't access localhost:1158/em in oracle 11gR2 - oracle

I recently installed oracle 11gR2 in windows 10 64bit, but after installation I can't access localhost:1158/em so i searched and found that i must run emctl start dbconsole but this service is already running, so please help me.

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ODAC 18c Release 1 (18.3.0.0.0) Installer crashing

I am trying to install ODAC 18c Release 1 (18.3.0.0.0) and when I click on the Setup.exe it shows the black screen(command prompt ) and there after nothing is coming. The universal Installer is not at all loading.
Currently I am using Windows 10 Enterprise edition ,
VS 2015 , 2017 Professional editions are installed.
My Machine is 64 bit
Other than the above I have installed ODTwithODAC1120320_32bit also in my system.
No idea why the installer is crashing.
I could see a prerequisite like
Access to an Oracle Database Server (Oracle 11g Release 2 or later)
is needed for the instillation in installation guide. In fact my oracle database server is located in some other place and we are accessing that from my location , so I need only client for accessing that. I am not sure what they meant by
Access to an Oracle Database Server (Oracle 11g Release 2 or later)
Do I need to install the Oracle database 11g+ ?? Do the crashing issue is because of some other reasons ?
Can someone help me to resolve this ?
Methods I have tried so far :
Open the install folder directly and click on the oui.exe directly
Disconnect internet and try to install
Run the installation exe in elevated rights mode
Kill the java.exe from task manager and try to install
None of the above methods are working.
And finally I found the reason.
I didn't have a _JAVA_OPTIONS in the system variables. I have added that and run the installer as run as administrator.
The variable value should be -Xmx512M

Install Oracle 11g Client on Windows 10

Is it possible to install Oracle 11g client on Windows 10? Our firm's computers were upgraded to Windows 10 and our ODBC access no longer works. I then tried to use my personal PC (Win 10) to install the client and see if it works; however, after downloading the files and running setup.exe, a command window opens and closes immediately. I don't see any errors but it doesn't install either.
Some research shows that it may not be supported but if that's the case, how should we connect to our 11g database?
Any and all insight would be greatly appreciated.

oracle 12c installation windows 10 exit on first cmd screen

When installing oracle 12c (and also 11g) on a windows 10 machine the installation exits after the first cmd screen. It pops up for a brief moment and disappears. I tried the same installation on a clean windows 10 machine an it starts properly (so nothing wrong with the installation file). Any suggestions?
ONLY Oracle 12c (12.1.0.2) supported on Windows 10.
All full information about the compatibility of Oracle versions and supported platforms should be found on the official oracle support site.https://support.oracle.com

Unable to install (re-install) Toad DB2

When I try to re-install Toad, i get the following error message:
"The Toad for DB2 installer has detected an existing 64-bit DB2 environment on your computer. This installation of Toad for DB2 includes a 32-bit DB2 client. However, DB2 does not allow both 32-bit and 64bit DB2 Environment to exist on the same computer."
I am using Windows 7 (64bit) and just uninstalled Toad prior to this installation. (Trying to re-install toad)
O and here is the solution. Hope this can help others as well:)
Opened registry, looked for the keys
HKEY_LOCAL_MACHINE\SOFTWARE\IBM
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\IBM
Just renamed the IBM Folder into something else
After that the 64 bit Toad setup will pass the checking for any installed IBM software. And there you go! :)

Oracle Webcenter Installation

I am trying to install webcenter on Windows 7 64bit Webcenter setup is not running with 64bit, so i tried with 32 bit install
It started but gives the following error on installation location point.
i am following the points mentioned in blog post
http://yonaweb.be/install_webcenter
PS:I have already installed the Weblogic in MiddlewareNew Location.
Error:
"INST-07286: Specified Oracle Middleware home location does not have version 10.3.4.0 of Weblogic Server. If the version is incorrect then congfiguring with the weblogic server will fail."
This error I got while installing webcenter(11.1.1.5.0) on Windows 64bit, this error coming at "Installation Location" screen level.
Please advise on what steps should I take to move forward my installation successfully
Here I'm putting my installation location details for Middleware "C:\Oracle\MiddlewareNew", and for weblogic "C:\Oracle\MiddlewareNew\wlserver_12.1"
![WebCenter Installation error][1]
weblogic 12c is not compatible with webcenter yet....change for an earlier version of weblogic 11g and try again
The prerequisites for Oracle WenCenter Portal on the official Download page http://www.oracle.com/technetwork/middleware/webcenter/portal/downloads/index.html specifies Oracle WebLogic Server 11g R1 to be used. The latest version WebLogic Server 12c does not work with current WenCenter Portal version.

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