ddl memory 오라클 online patch hybrid 복구 bp 조나단루이스 flashback rollback 11.2.0.4 broker install rac parameter psu 19c recover perl 충돌 new features rman oracle patch rownum asktom ENABLE_DDL_LOGGING compression Performance security 데이터가드 dataguard inmemory_size backup pagination data dictionary view replay imcu 백업 V$EVENT_NAME columnar 패치 파라미터 12c recovery asm USER_IND_EXPRESSIONS New Feature 뉴피처 index 설치 optimization 보안 conflict 브로커 tts in-memory nid storage Tuning paging patch conflict dynamic performance view database change database name recommendation inmemory_area FBI