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CG168 Oracle Architecture and Installation

CG168 Oracle Architecture and Installation. Akhtar Ali. Basic ORACLE Architecture. Database. Table spaces. Data file. physical. logical. Segment. O/S block. Extent. Oracle block. Basic ORACLE Architecture. User processes. dispatchers. DATAFILE LOG FILES ARCH LOG FILES.

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CG168 Oracle Architecture and Installation

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  1. CG168Oracle Architecture and Installation Akhtar Ali

  2. Basic ORACLE Architecture Database Table spaces Data file physical logical Segment O/S block Extent Oracle block

  3. Basic ORACLE Architecture User processes dispatchers DATAFILE LOG FILES ARCH LOG FILES Dedicated server processes Shared server processes SGA PMON SMON RECO DB buffer Cache Redo log buffer Shared pool DBWR LGWR LCKO CKPT ARCH

  4. Basic ORACLE Architecture • Processes in Oracle • User processes • Oracle processes • Server processes (shadow processes) • Background processes

  5. Basic ORACLE Architecture Tablespaces – system, user, rollback (undo), temporary Tablespace is made up of datafiles, a datafile is made up of segments, a segment is made up of blocks, a block is made up of OS datablocks SELECT tablespace_nameFROM dba_tablespacesWHERE contents = 'UNDO'; SELECT value AS block_sizeFROM v$parameterWHERE UPPER(name) = 'DB_BLOCK_SIZE';

  6. Installing the Oracle software The various types of installations include • Server installation • Administrative client installation • Application user client installation • Programmer/2000 installation • Custom installation

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