Figures shown in these notes are from Oracle® Database Concepts 11 g Release 2 Objectives These notes introduce the Oracle server architecture. The architecture includes physical components, memory components, processes, and logical structures. Primary Architecture Components The figure shown above details the Oracle architecture. Oracle server : An Oracle server includes an Oracle Instance and an Oracle database . · An Oracle database includes several different types of files: datafiles, control files, redo log files and archive redo log files. The Oracle server also accesses parameter files and password files. · This set of files has several purposes. o One is to enable system users to process SQL statements. o Another is to improve system performance. o Still another is to ensure the database can be recovered if there is a software/hardware failure. · The database server must manage large amo
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