db2 connect to DBNAME
db2 reorg table SCHEMANAME.TABLENAME allow read access
db2 runstats on table SCHEMANAME.TABLENAME on all columns with distribution and detailed indexes all
查看统计信息使用：
db2 "SELECT CARD,STATS_TIME FROM SYSCAT.TABLES WHERE TABNAME = 'TABLENAME'"
查看高水位线使用：
db2 list tablespaces show detail
DB2 降低高水位线、刷新统计信息
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转载自feng-henry.iteye.com/blog/1964159
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