Block Class

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블록 클래스의 값과 의미는 다음과 같다.

ClassDescription
1 data block
2 sort block
3 save undo block
4 segment header
5 save undo header
6 free list
7 extent map
8 1st level bmb
9 2nd level bmb
10 3rd level bmb
11 bitmap block
12 bitmap index block
13 file header block
14 unused
15 + 2*r undo header block(r = Undo Segment 번호. 0 = System undo segment)
16 + 2*r undo block(r = Undo Segment 번호. 0 = System undo segment)