ACD Active Change Directory AMDU ASM asm disk ASM恢复 asm文件 asm磁盘头 AT bbed block prefetch CBO COD Continuing Operations Directory crash Disk directory disk header drop database EXADATA file directory filter FST gc buffer busy acquire gdb JPPD ksfqpn library cache lock ohasd ORA-00600[4193] ORA-00600[16703] ORA-04030 ORA-04031 ORA-15042 Predicate Move-Around PST push subquery Query transformations rac rebalance row cache lock set join conversion SJC systatedump truncate 磁盘组无法mount
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标签归档：CBO；or-expansion
案例：what’s fuck？CBO居然选择cost值高的
本案例来自北区某客户的一条sql出现了性能问题，在分析过程中发现这是一个非常诡异 … 继续阅读