#[INS-20802] Oracle Database Configuration Assistant failed during installing oracle12c on windows7. Can any one suggest?

Question

[INS-20802] Oracle Database Configuration Assistant failed.

Cause - The plug-in failed in its perform method Action - Refer to the logs or contact Oracle Support Services. Log File Location C:\Program Files\Oracle\Inventory\logs\installActions2016-12-19_11-03-33AM.log

Answer 1

I faced the same issue recently and I tried several of the following methods for resolving the issue :-

1. Disabling Windows UAC
2. Disabling firewall
3. Disabling antivirus - mine was a fresh VM, so disabled Windows Defender
4. Adding localhost IP i.e., 127.0.0.1 to the hosts file etc.

but none of them helped.

At last I found this, which suggested installing Microsoft Visual C++ 2010 Redistributable Package (x86) and this solved the problem in a matter of seconds! I just had to click 'Retry' on the installation dialog.

Answer 2

There is a bug in some installers, as described in this other answer, which prevents Oracle from installing the required Microsoft Visual C++ 2010 Redistributable.

The 32bit installer uses the file install\oraparam.ini, which contains these lines:

#Flags for installing MSVCR80
#MSVCREDIST_LOC flag will provide the name of the exe that is being shipped in stage/ext/bin 
MSVCREDIST_LOC=vcredist_x64.exe

But the file available under stage/ext/bin/ is vcredist_x86.exe.

So before installing, edit the install\oraparam.ini file, and replace _x64 with _x86 in that line to get:

MSVCREDIST_LOC=vcredist_x86.exe

Answer 3

the solution is to install Visual C++ 2010 Redistributable Package (x86) or (x64)

Answer 4

Changing the install location worked for me! New Location: "C:\app"

Answer 5

For me everything was working fine...I checked for listener, services, path. Then I tried below and it works... During installation when Database configuration got failed. Go to sqlnet.ora file and replace NTS with NONE.

Example : SQLNET.AUTHENTICATION_SERVICES= (NONE)

After that try again installing the database configuration. Click on Retry.

Note: If you have installed oracle and skip database configuration failed step then you can go to search bar of window and open Database configuration and try downloading it & it will get installed and will ask for password. After that you will be able to connect to database.

DONT USE @ IN ORACLE PASSWORD Because when you try to login sql plus it will give error. In case you did that then write your password in inverted commas. ex: "password"

Answer 6

if you get this error during 19c installation Check if there is an already running listener and stop the listener, then retry the installation . This worked for me

Answer 7

Thanks @disha, this worked for me:

    Go to sqlnet.ora file and replace NTS with NONE.

    Example : SQLNET.AUTHENTICATION_SERVICES= (NONE)

    After that try again installing the database configuration. 
    Click on Retry.

also tried @mivk advice on the vcredist install path and made sure that I had the same version as the installer provides, when I tried to install this it failed as there was a newer version already installed. anyway with the correct version and this it worked. using a created windows account in the install seems to be the common thread to this issue though using a virtual account I didnt have this issue.