Creating a dbspace that uses the default page size

You can use onspaces to create a standard dbspace and a temporary dbspace.

For information about creating a dbspace with a non-default page size, see Creating a dbspace with a non-default page size.

Any newly added dbspace (and its mirror, if one exists) is available immediately. If you are using mirroring, you can mirror the dbspace when you create it. Mirroring takes effect immediately.

To create a standard dbspace using onspaces:

  1. On UNIX, you must be logged in as user informix or root to create a dbspace.

    On Windows, users in the Informix-Admin group can create a dbspace.

  2. Ensure that the database server is in online, administration, or quiescent mode.
  3. Allocate disk space for the dbspace, as described in Allocate disk space.
  4. To create a dbspace, use the onspaces -c -d options.

    KB is the default unit for the -s size and -o offset options. To convert KB to megabytes, multiply the unit by 1024 (for example, 10 MB = 10 * 1024 KB).

    See Creating a dbspace with a non-default page size for information about additional onspaces options if you are creating a dbspace with a non-default page size.

  5. If you do not want to specify the first and next extent sizes for the tblspace tblspace in a dbspace, go to 6.

    If you want to specify the first and next extent sizes for the tblspace tblspace in a dbspace, see additional information in Specifying the first and next extent sizes for the tblspace tblspace.

  6. After you create the dbspace, you must perform a level-0 backup of the root dbspace and the new dbspace.
The following example shows how to create a 10-megabyte mirrored dbspace, dbspce1, with an offset of 5000 KB for both the primary and mirror chunks, using raw disk space on UNIX:
onspaces -c -d dbspce1 -p /dev/raw_dev1 -o 5000 -s 10240 -m /dev/raw_dev2 5000
The following example shows how to create a 5-megabyte dbspace, dbspc3, with an offset of 200 KB, from raw disk space (drive e:) on Windows:
onspaces -c -d dbspc3 \\.\e: -o 200 -s 5120

For more information about creating a dbspace with onspaces, see Dbspaces and information about the onspaces utility in the HCL Informix® Administrator's Reference.


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