The user ID or password that you entered is incorrect - Siebel IP2017 SMC Login Failure

I was not able to login to SMC after a fresh install, the error message displayed was:

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Message from webpage
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The user ID or password that you entered is incorrect.
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OK   
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Of course the credentials I was using was the same as the ones provided during installation, but it was not working, regardless of what I tried.

I also tested changing the certificates as it is responsible for 99% of the errors during SMC utilization, but it wasn't the case this time.

So finally what I did to solve the issue was changing the JRE that comes with installation,. I don't know what exactly was wrong, but replacing it by Java8 (64-bit) found on /usr folder (exported as $JAVA_HOME) was enough to get it working properly.

Below the commands I used for it:

cd $ai_location
mv jre jre_orig
ln -s $JAVA_HOME/jre jre