Oracle is an Object-relational Database Management System (ORDBMS) created by Oracle Corporation. Specific releases of the product are known as Oracle9i, Oracle10g, Oracle 11g and Oracle 12c, where "i", "g" and "c" stand for "internet", "grid" and "cloud" respectively. Generally there are two releases within each major version. Questions tagged [oracle11g] are assumed to be specific to this version or features introduced in this version.
There are two releases of the Oracle 11g ORDBMS software, 11gR1 and 11gR2. Questions tagged with oracle11g are assumed to be specific to this version or features introduced in this version. It is generally advisable to specify the full database version (e.g. 11.2.0.2) and it is often useful to include the underlying operating system.
Oracle Corporation discontinued support for 11g as of 31-Dec-2020.
Questions for 11.1.x should be tagged oracle11g and questions specific to 11.2.x should be tagged oracle11gr2
Questions should probably be additionally tagged oracle for the widest readership.
Questions about SQL in general should probably be tagged sql.
Questions about PL/SQL in particular should probably be tagged plsql as well as oracle.
Questions concerning installation or operation may be asked at Server Fault.
Oracle's documentation is quite extensive, and answers to many questions can be found there. It can be found at:
