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System Administrator’s Guide U42252-J-Z915-1-76
Installation and Configuration Configuration
The next query depends on the usage of an NAS filer. When you are using such
an NAS filer and so answer y to this question you have to input the information
described in section “Configuring NSR-ORA”.
BACKUP_COMPRESS=true | false | gzip | bzip2
Compression of the database files is controlled via the BACKUP_COMPRESS
parameter. It may take the following values:
true
Selecting true for BACKUP_COMPRESS causes the default compression
mode (Lempel-Ziv) to be used.
false
No compression is used.
gzip
The GZIP mode is used for compression. In addition a compression level
may be selected by setting the (hidden) COMPRESS_LEVEL parameter
(see below).
bzip2
The BZIP2 mode is used for compression. In addition a compression
level may be selected by setting the (hidden) COMPRESS_LEVEL para-
meter (see below).
Now configure_nsrora asks you whether you want to perofrm parallel backups of
the tablespaces. Answering y an additional parameter has to be set.
AMON Parameters
Now the amon parameters are queried:
AMON_MAX_LOGS
This parameter defines a threshold value for the maximum number of offline
redolog files in the archive directory. When this value is reached, the next
poll (see AMON_INTERVALL parameter below) will initiate a backup of these
redolog files. When the offline redolog files have been backed up success-
fully on external media they are deleted from the archive directory.
AMON_MIN_LOGS
You use this parameter to specify how many offline redolog files should not
be backed up but should remain in the archive directory when the threshold
value AMON_MAX_LOGS is reached. It is always the newest redolog files
that remain in the archive directory without being backed up.