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Some database parameters are identified as obsolete. These parameters have either been removed already or will be removed in one of the next database versions.

The following table lists the most important database parameters that have been identified as obsolete.

Obsolete Database Parameters (Selection)

Name

(from version 7.7.03)

Old Name

(up to and including version 7.7.02)

Marked as Obsolete Since Version

Removed Since Version

Description

-

_BACKUP_HISTFILE

7.7

7.7

Name of the history file for data and log backups

-

_BACKUP_MED_DEF

7.7

7.7

Name of the file containing the definitions of the backup templates

DeprecatedParameter22

_UNICODE

7.7

-

Defines whether the database system uses Unicode as the character set for the names of database objects in the database catalog

DeprecatedParameter22

BACKUP_BLOCK_CNT

7.7

-

Block size used by the database system when writing backups to data carriers

Only useful for tapes that have an optimal block size

DeprecatedParameter13

EXPAND_COM_TRACE

7.7

-

Specifies whether memory space is reserved when COM trace files are created

DeprecatedParameter29

USE_OPEN_DIRECT

7.7

-

Replaced by UseFilesystemCacheForVolume, see Support Database Parameters

YES: the database system uses the O_DIRECT flag when opening volumes (if this flag is supported by the file system). You use this flat to configure that the operating system does not use a separate cache for I/O operations. Note that this flag is ignored for Linux kernel < 2.4.18. Changes only apply after restart