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Which status indicator assesses how effective the table cache is?(a) Open_tables(b) Opened_tables(c) Close_tables(d) Closed_tablesThis question was posed to me during an online interview.This interesting question is from Administrative-Level Optimizations in chapter Query Optimization of MySQL

Answer»

Right option is (B) Opened_tables

Explanation: When the server ACCESSES VARIOUS tables, the table cache fills up. The server closes the tables that have not been used recently in order to make room for OPENING the NEW tables.



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