dba_indexes视图的性能分析

语句运行的速度很快，但是从statspack中发现这条语句的逻辑读单次高达26846。Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production. TNS for IBM/AIX RISC System/6000: Version 9.2.0.6.0 - Production. Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi. TNS for IBM/AIX RISC System/6000: Version 10.2.0.4.0 - Productio