3.1.1 Considerations and Requirement for Using OEDA
Review this information before using Oracle Exadata Deployment Assistant (OEDA).
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Oracle Exadata ships with the Oracle Linux operating system installed on the servers.
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The rack prefix is used to generate host names for all components. For example, if you specify
dbm0
for the rack prefix:- The database server host names are like
dbm0db01
- The storage server host names are like
dbm0cel01
- The InfiniBand Network Fabric
switch names are like
dbm0sw-iba1
- The RoCE Network Fabric switch
names are like
dbm0sw-rocea1
Note:
The rack prefix can contain a maximum of 20 letters and numbers. Spaces and symbols are not permitted; for example, exclamation (!), hyphen (-), and so on.In you have multiple racks, then, each rack prefix should be a unique value that identifies the rack. Oracle recommends using
dbm01
for the first rack,dbm02
for the second,dbm03
for the third, and so on. - The database server host names are like
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If you configure Oracle Exadata with storage management using Oracle Automatic Storage Management (Oracle ASM), the backup method and redundancy protection levels you use determine how to size the Oracle ASM disk groups that are created during installation.
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If you configure internal backups, then the database backups are created on disk in the Fast Recovery Area in the RECO disk group for the database. The Fast Recovery Area also contains Archived Redo Logs and Flashback Log Files. The division of disk space between the DATA disk group and the RECO disk group is 40% and 60%, respectively.
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If you configure external backups, then database backups are created on disk or tape media that is external to currently deployed Oracle Exadata. The Fast Recovery Area contains only objects such as Archived Redo Logs and Flashback Log Files.
Because you do not need to reserve additional space in the RECO disk group for backups, the division of disk space between the DATA disk group and the RECO disk group is now 80% and 20%, respectively.
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If you configure Oracle Exadata with storage management using Oracle Automatic Storage Management (Oracle ASM), Oracle recommends the use of high redundancy disk groups for mission critical applications. Use the following guidelines to assist in sizing the disk groups based on the redundancy levels for the disk groups:
Table 3-1 Protection Levels and Disk Group Contents
Oracle ASM Redundancy Level for DATA Disk Group Oracle ASM Redundancy Level for RECO Disk Group DATA Group Contents RECO Group Contents High
High
Data files
Temporary files
Online redo logs
Control file
Archive logs
Flashback log files
High
Normal
Data files
Online redo logs
Control file.
Archive logs
Temporary files
Flashback log files
Normal
High
Data files
Temporary files
Online redo logs
Control file
Archive logs
Flashback log files
Normal
Normal
Data files
Temporary files
Online redo logs
Control file
Archive logs
Flashback log files
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A valid time zone name is required when installing Oracle Exadata. Time zone values provided for Oracle Exadata and Oracle Linux comes from the Time Zone Database. You must specify a valid time zone name for each server using the
TZ
environment variable. The variable value is of the form Area/Location. For example,America/New_York
is a validTZ
value;EST
,EDT
, andUTC-4
are invalid values. -
OEDA configures all Exadata components, including the database servers (with or without virtualization), storage servers, and the RDMA Network Fabric. For successful configuration, OEDA requires access to:
- The client and administration network interfaces on the database servers, including the VM server host and the VM guests where applicable.
- The administration network interfaces on the storage servers.
- The administration network interfaces on the RDMA Network Fabric switches.
Ensure that you run the OEDA deployment phase on a host with access to all of the required network interfaces.
Related Topics
Parent topic: Overview of Oracle Exadata Deployment Assistant