Structure of a Regular Dbspace

After disk-space initialization, you can add new dbspaces. When you create a dbspace, you assign at least one chunk (either raw or cooked disk space) to the dbspace. This chunk is referred to as the initial chunk of the dbspace. Figure 1 illustrates the structure of the initial chunk of a regular (nonroot) dbspace.

When the dbspace is first created, it contains the following structures:
  • Two reserved pages
  • The first chunk free-list page in the chunk
  • The tblspace tblspace for this dbspace
  • Unused pages
    Figure 1. Initial Chunk of Regular Dbspace
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