Oracle conversion of UNIX timestamp to timestamp with time zone

Question

Trying to convert UNIX timestamp to Oracle timestamp with timezone. Expecting to see different output, however datetime part is the same.

What is wring ?

Answer 1

Unix timestamp is from 1970-01-01 00:00:00 UTC. When you just do timestamp '1970-01-01 00:00:00' Oracle takes your local time zone!

You have to do it like this:

(TIMESTAMP '1970-01-01 00:00:00' AT TIME ZONE 'UTC' +     
    numtodsinterval(1204104116656/1000,'second')) AT time zone tz_offset('PST');

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