V$SQL 라이브러리 캐시에 캐싱된 각 child 커서에 대한 통계정보를 보여줌 select sql_id, child_number, sql_text, sql_fulltext, parsing_schema_name --1 , SHARABLE_MEM, PERSISTENT_MEM, RUNTIME_MEM --2 , loads, invalidations, parse_calls, executions, fetches, rows_processed --3 , cpu_time, elapsed_time --4 , buffer_gets, disk_reads, sorts --5 , application_wait_time, concurrency_wait_time --6 , cluster_wait_time, user_io_wait_..