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• POOL_ID 

The buffer pool ID. This is an identifier to distinguish between multiple buffer pool instances. 

• BLOCK_ID 

The buffer pool block ID. 

• SPACE 

The tablespace ID; the same value as INNODB_TABLES.SPACE . 

• PAGE_NUMBER 

The page number. 

• PAGE_TYPE 

The page type. The following table shows the permitted values. 

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