How do I check the Oracle version using SQL

Question: How do I check the Oracle version using SQL?

Answer: Version information is stored in a table called v$version. In this table you can find version information on Oracle, PL/SQL, etc.

To retrieve the version information for Oracle, you execute the following SQL statement:

select * from v$version

where banner like 'Oracle%';

It should return something like this:

Banner

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Oracle9i Enterprise Edition Release 9.2.0.1.0 - 64bit Production