Library Cache Hit Ratio
The library cache (a component of the shared pool) stores the executable (parsed or compiled) form of recently referenced SQL and PL/SQL code. Oracle tries to reuse this code.
- If the code has been executed previously and can be shared, Oracle will report a library cache hit.
- If Oracle is unable to use existing code, then a new executable version of the code must be built, which is known as a library cache miss.
posted on 2013-03-19 00:47 Oracle和MySQL 阅读(194) 评论(0) 编辑 收藏 举报