I need JDK6 for running a legacy application. But I need TLS 1.2 support also.
This link says TLS 1.2 support is available in Java™ SE Development Kit 6, Update 121. But the java archive download page for ver 6 has versions 45 and lower only.
Can I download the specified version of JDK from aome other page in oracle website? Is such a provision available?
You need to be a supported customer to get more recent patches of old jdk versions. See this link:
Current update releases for JDK 6 and JDK 7 are available for support customers.