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. Initial Chunk of Regular Dbspace 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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