Using Serviceguard Extension for RAC, 2nd Edition, February 2005 Update

Table Of Contents
Serviceguard Configuration for Oracle RAC
Creating a Storage Infrastructure with LVM
Chapter 246
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The size of the logical volume is larger than the Oracle file size because
Oracle needs extra space to allocate a header in addition to the file's
actual data capacity.
Create these files if you wish to build the demo database. The three
logical volumes at the bottom of the table are included as additional data
files, which you can create as needed, supplying the appropriate sizes. If
your naming conventions require, you can include the Oracle SID and/or
the database name to distinguish files for different instances and
different databases. If you are using the ORACLE_BASE directory
structure, create symbolic links to the ORACLE_BASE files from the
appropriate directory. Example:
# ln -s /dev/vg_ops/ropsctl1.ctl
/u01/ORACLE/db001/ctrl01_1.ctl
For more information about Oracle directories, refer to the Oracle Server
for HP 9000 Installation and Configuration Guide. More information
about the maximum sizes of data files is found in the Oracle 8i Reference
(Oracle Part Number A76961-01), Chapter 4, “Database Limits.”
After creating these files, set the owner to oracle and the group to dba
with a file mode of 660. The logical volumes are now available on the
primary node, and the raw logical volume names can now be used by the
Oracle DBA.
Displaying the Logical Volume Infrastructure
To display the volume group, use the vgdisplay command:
# vgdisplay -v /dev/vg_ops
ops3log3 28 /dev/vg_ops/rops2log3.log 20
opsdata1 208 /dev/vg_ops/ropsdata1.dbf 200
opsdata2 208 /dev/vg_ops/ropsdata2.dbf 200
opsdata3 208 /dev/vg_ops/ropsdata3.dbf 200
Table 2-1 Required Oracle File Names for Demo Database (Continued)
Logical Volume Name
LV
Size
(MB) Raw Logical Volume Path Name
Oracle
File
Size
(MB)*