10/23/2015ISYS366 - Installation1 ISYS366 Installation

10/23/2015ISYS366 - Installation2 System Architectures Process View Dedicated servers Multi-threaded servers Processor View Single processor systems Multi and parallel processor systems Database View Two-phase commit Replication

10/23/2015ISYS366 - Installation3 Mirroring & RAID Eats up a lot of disk RAID 1( Redundant Array of Inexpensive Disks) – good for temporary tablespace datafiles, control and log files (provides for redundancy) RAID 5 – better for OLAP, DSS and DW because writes are so much slower on RAID 5

10/23/2015ISYS366 - Installation4 Installation Before installation – full backup Read disk and memory requirements Oracle10g? 512MB RAM?, 1G?, ????? 1G to several Gig HD

10/23/2015ISYS366 - Installation5 Installation Types of Installation Upgrade – basically, you are overwriting old files Migration – you are creating a new directory structure, etc. and copying the datafiles. Migration is preferable to upgrade. Suggested configuration Development server QA server Production server

10/23/2015ISYS366 - Installation6 Installation Check the EXACT version of your operating system Get the EXACT installation manual for your OS Try installing a default instance and “poke around” NB – Oracle block sizes (8+) should be MULTIPLES of the OS block size O8i – you can connect as INTERNAL through SQL*Plus

10/23/2015ISYS366 - Installation7 An Example using Oracle UNIX Check and configure shared memory Create /u01 for S/W and /u02-/u04 for databases Create a DB admin group in UNIX Create UNIX Oracle account Name is usually Oracle Home is ORACLE_HOME Assign default shell Et cetera (environ variables, umask values, etc.) oratab (/var/opt/oracle)

10/23/2015ISYS366 - Installation8 Separating Objects (on devices) Prevents I/O bottlenecks and contention Raw Disk (partitions) – for both UNIX and NT Up to 40% performance improvement Why you need a file handling facility like Oracle's to take advantage of this (compare Ingres) Oracle Parallel Server requires it. UNIX and NT buffer cache bypassed

10/23/2015ISYS366 - Installation9 Separating Objects (on devices) Raw disk must be owned by Oracle (UNIX) Oracle block size must be multiple of the physical (disk) block size Only one data file per raw disk partition Put raw disk partitions on separate physical device

10/23/2015ISYS366 - Installation10 Separating Objects (on devices) Comparison to SQL Server and Ingres file management SQL Server Ingres Separate disks for different type of files Separate datafiles for data, index, TBS and temp tablespaces Ensures integrity

10/23/2015ISYS366 - Installation11 After Installation Assign user SYSTEM to a new default tablespace and default temporary tablespace (leave SYS alone) Create a script that will assign all new users to a user tablespace and a default user temporary tablespace

10/23/2015ISYS366 - Installation12 After Installation You can examine the tablespaces from DBA_TABLESPACES or USER_TABLESPACES USER_TABLESPACES Other system information from SHOW PARAMETERS, or the V$PARAMETERS tableSHOW PARAMETERS

10/23/2015ISYS366 - Installation13 Moving Database Files Systems may be tuned after being created Shut down instance Move file (via op sys commands) Start up the Server Manager, start up the instance, then execute the following command: Alter database rename '/u02/data/mesh97-1.dbf' to '/u03/data/mesh97-1.dbf' Restart the instance