Create an extspace
You create an extspace with the onspaces utility. But you must first have a valid data source and a valid access method with which to access that data source. Although you can create an extspace without a valid access method or a valid data source, any attempts to retrieve data from the extspace generate an error. For information about access methods, see the HCL OneDB™ Virtual-Table Interface Programmer's Guide.
To
create an extspace with onspaces, use the -c option
as illustrated in the following example. The following example shows
how to create an extspace, pass_space, that is associated with
the UNIX™ password file.
onspaces -c -x pass_space -l /etc/passwdSpecify
an extspace name of up to 128 bytes. The name must be unique and begin
with a letter or underscore. You can use letters, digits, underscores,
and $ characters in the name.
Important: The preceding
example assumes that you have coded a routine that provides functions
for correctly accessing the file passwd and that
the file itself exists. After you have created the extspace, you must
use the appropriate commands to allow access to the data in the file passwd.
For more information about user-defined access methods, see the HCL OneDB
Virtual-Table Interface Programmer's Guide.
For reference information about creating an extspace with onspaces, see information about the onspaces utility in the HCL OneDB Administrator's Reference.