http://www.pc-freak.net/blog/fix-mysql-ibdata-file-size-ibdata1-file-growing-large-preventing-ibdata1-eating-disk-space/
https://dba.stackexchange.com/questions/8982/what-is-the-best-way-to-reduce-the-size-of-ibdata-in-mysql
스토리지엔젠별 사용 현황 조회
SELECT IFNULL(B.engine,'Total') "Storage Engine", CONCAT(LPAD(REPLACE(FORMAT(B.DSize/POWER(1024,pw),3),',',''),17,' '),' ', SUBSTR(' KMGTP',pw+1,1),'B') "Data Size", CONCAT(LPAD(REPLACE( FORMAT(B.ISize/POWER(1024,pw),3),',',''),17,' '),' ', SUBSTR(' KMGTP',pw+1,1),'B') "Index Size", CONCAT(LPAD(REPLACE( FORMAT(B.TSize/POWER(1024,pw),3),',',''),17,' '),' ', SUBSTR(' KMGTP',pw+1,1),'B') "Table Size" FROM (SELECT engine,SUM(data_length) DSize,SUM(index_length) ISize, SUM(data_length+index_length) TSize FROM information_schema.tables WHERE table_schema NOT IN ('mysql','information_schema','performance_schema') AND engine IS NOT NULL GROUP BY engine WITH ROLLUP) B, (SELECT 3 pw) A ORDER BY TSize;
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