PL/SQL API Oracle

I wonder if there is a official documentation/API for the different functions which is defined in Oracle? I find it rather hard to remember functions when I stumble upon them and then bookmark the website for开发者_如何转开发 later reference.

Thanks in advance!

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Documentation for Oracle versions 8.1.7 and on is available at http://tahiti.oracle.com

For every version, there is a PL/SQL Packages and Types Reference manual that should provide information about all the supplied packages (occasionally, you'll find a package that is associated with a specialized function documented in the specialized manual rather than in the packages & types reference, but that's pretty rare). The SQL Reference also has a chapter on functions that lists the supplied functions.