Thursday, 20 November 2014

Basic Initialization Parameters

CLUSTER_DATABASE                            - default to false - true for RAC
COMPATIBLE                                            - guaranteeing backward compatibility - same value on both the primary and standby databases
CONTROL_FILES                                     - names of control files - 1 to 8 filenames
DB_BLOCK_SIZE                                     - default 8192 - 2048 to 32768 - in Bytes - size of Oracle database blocks
DB_CREATE_FILE_DEST                       - default location for Oracle-managed datafiles
DB_CREATE_ONLINE_LOG_DEST_n   - default location for Oracle-managed control files and online redo logs
DB_DOMAIN                                             - logical location of the database within the network structure
DB_NAME                                                  - database identifier of up to 8 characters - case insensitive
DB_RECOVERY_FILE_DEST                  - location for the flash recovery area - FRA contains control, redo, archive, rman, flashback logs
DB_RECOVERY_FILE_DEST_SIZE       - total space to be used by target database recovery files created in FRA
DB_UNIQUE_NAME                               - globally unique name for the database - 30 characters and is case insensitive
INSTANCE_NUMBER                             - in RAC instance number 1,2...n
LDAP_DIRECTORY_SYSAUTH            - directory-based authorization for SYSDBA and SYSOPER - default no
LOG_ARCHIVE_DEST_n                       - defines up to 10 archive log location
LOG_ARCHIVE_DEST_STATE_n         - specify the availability state of the corresponding destination
NLS_LANGUAGE                                   - default language of the database - used for messages, day and month names, symbols for AD, BC, a.m., and p.m.,
NLS_TERRITORY                                   - territory whose conventions are to be followed for day and week numbering
OPEN_CURSORS                                    - maximum number of open cursors a sesssion can have
PGA_AGGREGATE_TARGET               - target aggregate PGA memory available to all server processes - 10 MB <> 4096 GB
PROCESSES                                            - 6 to OS dependent - default 100
REMOTE_LISTENER                             - address of listeners that are not running on the same machine as this instance
REMOTE_LOGIN_PASSWORDFILE   - Oracle checks for a password file - shared/exclusive/none
SESSIONS                                               - maximum number of sessions that can be created in the system - default to (1.1 * PROCESSES) + 5 - range 1 to 2^31
SGA_TARGET                                        - size of all SGA components(Buffer cache /Shared pool/Large pool/Java pool/Streams pool)
SHARED_SERVERS                              - number of server processes - 0 for not on
STAR_TRANSFORMATION_ENABLED - determines cost-based query transformation will be applied to star queries
UNDO_TABLESPACE                           - specifies the undo tablespace to be used when an instance starts up

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