https://jun89.tistory.com/ - Oracle 및 MySQL ko Thu, 2 Jul 2026 07:56:34 +0900 TISTORY 100 pbj1102 https://jun89.tistory.com/64 PMM 클라이언트 파일 다운로드 및 등록 방법    pmm clinet download 경로 https://www.percona.com/downloads pmm2-client-2.16.0.tar.gz ##  MySQL서버 접속후 pmn유저로 OS 유저 생성 (유저명 : pmm)  # pmm유저로 설치파일 서버에 업로드pmm2-client-2.16.0.tar.gz    # pmn유저로 압축해.. Percona/PMM mysqld-exporter PMM pmm client PMM-ADMIN pmm-agent pmm-agent.yaml pbj1102 https://jun89.tistory.com/64 https://jun89.tistory.com/64#entry64comment Thu, 7 Sep 2023 15:51:53 +0900 https://jun89.tistory.com/63 Grafana 6.0 이상 버전에는 Grafana Loki에 대한 지원이 내장되어 있습니다.    * LogQL 기능을 활용 하려면 Grafana 6.3 또는 최신 버전을 사용하십시오 . Grafana 인스턴스에 로그인합니다. Grafana를 처음 실행하는 경우 사용자 이름과 .. Percona/Grafana github grafana LOGQL LOKI loki-config mysql PROMTAIL promtail-config pbj1102 https://jun89.tistory.com/63 https://jun89.tistory.com/63#entry63comment Fri, 18 Aug 2023 14:16:29 +0900 https://jun89.tistory.com/62 작업 구분 server / client 계정 작업 내용 / 명령어 비고 / 캡쳐 방화벽 오픈 　 - oracle linux용 yum, docker 등 필요 방화벽 오픈방화벽 정보는 방화벽 워크시트 참조 　 docker 설치 centos / rhel docker.repo 다운로드 server root - centos일 경우cd /etc/yum.repos.dwget https://download.docker.com/linux/centos/.. Percona ALERT SMS Container docker grafana Percona PMM PMM ALERT PMM CLINET PMM-ADMIN PMM2-CCLINET pbj1102 https://jun89.tistory.com/62 https://jun89.tistory.com/62#entry62comment Fri, 18 Aug 2023 14:07:38 +0900 https://jun89.tistory.com/61 INDEX RANGE SCAN 과 FULL TABLE SCAN : FULL TABLE SCAN은 테이블의 블록들을 DB_FILE_MULTIBLOCK_READ_COUNT 파라메터에 지정된 개수 단위로 읽음 : INDEX RANGE SCAN은 블록 단위로 읽음 : 그렇다면 언제나 .. Oracle/튜닝 INDEX RANGE SCAN 과 FULL TABLE SCAN pbj1102 https://jun89.tistory.com/61 https://jun89.tistory.com/61#entry61comment Wed, 16 Feb 2022 16:19:32 +0900 https://jun89.tistory.com/60 클러스터링 팩터(CLUSTERING FACTOR): 인덱스에 저장된 순서와 테이블에 저장된 데이터의 저장 순서가 얼마나 일치하는지를 나타내는 값 : 최대값은 인덱스에 저장된 항목의 개수 : 최소값은 테이블 블록의 개수       클러스터링&n.. Oracle/튜닝 Clustering Factor 클러스터링 팩터 pbj1102 https://jun89.tistory.com/60 https://jun89.tistory.com/60#entry60comment Wed, 16 Feb 2022 14:23:07 +0900 https://jun89.tistory.com/59 INDEX 컬럼 가공 : 인덱스가 정의된 컬럼을 가공하면 인덱스를 활용 할 수 없음   1. 명시적 형변환 : 사용자가 고의적으로 컬럼을 변형 2. 암시적 형변환 : 문자를 숫자나 날짜로 변환     [실습:명시적 형변환] SELECT /*+ gather_plan_statistics INDEX(produ.. Oracle/튜닝 INDEX 컬럼가공 명시적 형변환 암시적 형변환 pbj1102 https://jun89.tistory.com/59 https://jun89.tistory.com/59#entry59comment Fri, 11 Feb 2022 16:25:53 +0900 https://jun89.tistory.com/58 INDEX RANGE SCAN(MIN/MAX) - RANGE SCAN 을 통해 MIN/MAX 값만 읽는 Operationn   해당 Operation 테스트를 위해 아래와 같이 결합인덱스를 생성한다.    CREATE INDEX PRODUCTS_IDX ON PRODUCTS(PSIZE, PRICE);   [결합 인덱스 구조] PSIZE, PRICE 컬럼 순으.. Oracle/튜닝 Index Range Scan 결합인덱스 pbj1102 https://jun89.tistory.com/58 https://jun89.tistory.com/58#entry58comment Fri, 11 Feb 2022 15:48:52 +0900 https://jun89.tistory.com/57 INDEX RANGE SCAN DESCENDING : INDEX RANGE SCAN에서는 조건절의 범위를 검색 할 때, 기본적으로 최소 경계값부터 검색을 시작하여 최대 경계값에서 검색을 종료 : 만약, 최대 경계값에서 검색을 시작하여.. Oracle/튜닝 INDEX RANGE SCAN DESCENDING INDEX_DESC sort_area_size pbj1102 https://jun89.tistory.com/57 https://jun89.tistory.com/57#entry57comment Thu, 10 Feb 2022 17:20:56 +0900 https://jun89.tistory.com/56 INDEX RANGE SCAN : INDEX UNIQUE SCAN을 제외한 모든 INDEX SCAN은 INDEX RANGE SCAN 이다. : 고유 인덱스가 정의된 컬럼이 조건절에서 '=' 비교 연산자를 제외한 모든 연산자로 비교되는.. Oracle/튜닝 Index Range Scan pbj1102 https://jun89.tistory.com/56 https://jun89.tistory.com/56#entry56comment Thu, 10 Feb 2022 16:33:53 +0900 https://jun89.tistory.com/55 INDEX UNIQUE SCAN  : 고유 인덱스가 정의된 컬럼이 조건절에서 '=' 로 비교되는 경우  그 외의 경우는 전부 INDEX RANGE SCAN 발생     [실습] SELECT /*+ gather_plan_statistics */ * FROM products WHERE prodno = 11000;    -- PRODUCTS_.. Oracle/튜닝 Index Unique Scan Single Block I/O pbj1102 https://jun89.tistory.com/55 https://jun89.tistory.com/55#entry55comment Thu, 10 Feb 2022 16:25:33 +0900 https://jun89.tistory.com/54 B-Tree 인덱스 구조   루트 블록 : 브랜치 블록의 블록 주소, 인덱스 컬럼 값으로 구성 브렌치 블록 : 리프 블록의 블록 주소, 인덱스 컬럼 값으로 구성 리프 블록 : 인덱스 컬럼, 테이블 ROWID로 구성                 인덱스 컬럼으로 정렬되어 있으며, 컬럼 값이 같으면 ROWID 로 정렬   CREATE INDEX products_pric.. Oracle/튜닝 b-tree pbj1102 https://jun89.tistory.com/54 https://jun89.tistory.com/54#entry54comment Thu, 10 Feb 2022 16:15:04 +0900 https://jun89.tistory.com/53 FULL TABLE SCAN   : 테이블에 할당된 첫번째 블록부터 HWM 아래의 모든 블록을 읽음  : 1회의 I/O에 대해서 여러 개의 블록을 읽음   : DB_FILE_MULTIBLOCK_READ_COUNT 파라메터로 한 번에 읽어야 할 블록의 개수를 지정     SELECT NAME, VALUE, ISSYS_MODIFIABLE   .. Oracle/튜닝 DB_FILE_MULTIBLOCK_READ_COUNT TABLE ACCESS FULL pbj1102 https://jun89.tistory.com/53 https://jun89.tistory.com/53#entry53comment Thu, 10 Feb 2022 15:57:49 +0900 https://jun89.tistory.com/52 B+Tree 의 First Order 방식의 읽는 순서  - 자식 중의 종손 먼저  - 하위 tree 가 있다면 하위 다 읽고 다음 형재로     예)SELECT  /*+ gather_plan_statistics */ O.PAYTYPE, O.STATUS, O.CUSTNO, OD.PRICE FROM ORDERS O, ORD.. Oracle/튜닝 oracle plan pbj1102 https://jun89.tistory.com/52 https://jun89.tistory.com/52#entry52comment Fri, 28 Jan 2022 11:10:25 +0900 https://jun89.tistory.com/51 #ASM 인스턴스 들어가기 $ . oraenv ORACLE_SID = [slorder1] ? +ASM1 $asmcmd ASMCMD> ls -al WARNING:option 'a' is deprecated for 'ls' please use 'absolutepath' State  &.. Oracle/asm asm pbj1102 https://jun89.tistory.com/51 https://jun89.tistory.com/51#entry51comment Fri, 28 Jan 2022 10:30:46 +0900 https://jun89.tistory.com/50 AWR(Automatic Workload Repository) 이란 - Oracle Database 10g 의 내장 저장소. - 일정한 주기로 모든 주요 통계와 작업 로드 정보에 대한 스냅샷을 만들어 AWR 에 저장함. -> 수집된&nb.. Oracle/awr AWR pbj1102 https://jun89.tistory.com/50 https://jun89.tistory.com/50#entry50comment Fri, 28 Jan 2022 10:27:34 +0900 https://jun89.tistory.com/49 ///////////////////////////////////////////////////////////   오라클 백업/복구 ( export, import ) /////////////////////////////////////////////////////////// analyze table document compute statistics export/.. Oracle/pump dba_datapump_jobs expdp export impdp import pump pbj1102 https://jun89.tistory.com/49 https://jun89.tistory.com/49#entry49comment Fri, 28 Jan 2022 10:21:08 +0900 https://jun89.tistory.com/48 DBMS_XPLAN.DISPLAY_CURSOR  : 10g 부터 지원  : 9i 에서는 trace 10046 사용해야함   해당 패키지를 사용하기 위해서는 일반 DB유저에게 아래와 같은 권한을 부여해야한다.  GRANT SELECT ON V_$SESSION TO 사용자; GRANT SELECT ON V_$SQL_PLAN_STATISTICS_ALL TO 사용자; GRANT SELECT ON V_$SQL TO 사용자; &.. Oracle/튜닝 DISPLAY_CURSOR oracle pbj1102 https://jun89.tistory.com/48 https://jun89.tistory.com/48#entry48comment Fri, 28 Jan 2022 10:14:12 +0900 https://jun89.tistory.com/47 CBO (Cost Based Optimizer) 비용 산정 을 위해 테이블 통계, 인덱스 통계, 히스토그램을 참조한다.         TUNING.ORDERS ORDERNO ORDERDATE TOTAL PAYTYPE STATUS CUSTNO CODE 200004 2017-12-13 0:00 272900 신용카드 배송중 6091 29 200005 2017-12-15 0:00 61500 체크카드 배송.. Oracle/튜닝 BLEVEL dbms_stats Histogram method_opt oracle pbj1102 https://jun89.tistory.com/47 https://jun89.tistory.com/47#entry47comment Fri, 28 Jan 2022 09:48:46 +0900 https://jun89.tistory.com/46   SQL Tuning 이란 ?  - 쓸데 없는 일을 시키지 않는 것  - 병목현상을 없애어 모든 처리 과정이 최상의 성능을 발휘하도록 하는 것  - 최소한 자원으로 최대의 일을 시키는 것  - 놀고 있는 자원이 없도록 하는 것     SQL Tuning을 함으로써 튜닝이란 아래와 같이 3가지를 지칭할 수 있다.    SQL Tuning 선결 과제  1) 오라클 서.. Oracle/튜닝 CBO Multi Block oracle RBO single block SQL Tuning pbj1102 https://jun89.tistory.com/46 https://jun89.tistory.com/46#entry46comment Thu, 27 Jan 2022 10:09:45 +0900 https://jun89.tistory.com/45 rman 완전복구, 불완전복구 1. 사용 안함 설정 -> offline, shutdown 2. 백업 복원 -> restore 3. 복구 -> recover 4. 사용함 -> online, open Restore - 백업 파일로부터의 복원Recover -&n.. Oracle/backup oracle RMAN pbj1102 https://jun89.tistory.com/45 https://jun89.tistory.com/45#entry45comment Wed, 26 Jan 2022 10:43:58 +0900 https://jun89.tistory.com/44 테스트 시나리오 ( 복구 ) ==================================================================== 2. 아카이브 로그 모드 에서 복구. 2-1. 완전복구  1) offline 이 되는 일반 tablespace 복구 2) offline&nbsp.. Oracle/backup oracle pbj1102 https://jun89.tistory.com/44 https://jun89.tistory.com/44#entry44comment Wed, 26 Jan 2022 10:39:07 +0900 https://jun89.tistory.com/43 닫힌 백업 (콜드백업; Cold backup) - 오라클을 셧다운 시칸 상태에서 백업 - 단점 : 백업받은 동안은 DB서비스 불가능. 주의사항 - 모든 파일은 동일한 시점의 것이어야함 (SCN) - 정상적으로 db 셧다운 시킨상태에서.. Oracle/backup backup cold backup hot backup oracle pbj1102 https://jun89.tistory.com/43 https://jun89.tistory.com/43#entry43comment Wed, 26 Jan 2022 10:37:11 +0900 https://jun89.tistory.com/42 RMAN (Recovery Manager) :RMAN 에게 명령하고 백업복구의 주체가 RMAN. -> 원래는 관리자가 직접 백업 하고 장애 발생시 적절한 백업파일을 찾아 복구하는 방식. V$RMAN_OUTPUT V$RMAN_BACKUP_JOB_DETAILS V$BACKUP_PIEC.. Oracle/backup oracle RMAN pbj1102 https://jun89.tistory.com/42 https://jun89.tistory.com/42#entry42comment Wed, 26 Jan 2022 10:31:23 +0900 https://jun89.tistory.com/41 함수(Function) 값을 계산하고 결과 값을 반환하기 위해서 함수를 많이 사용 반드시 반환 될 값의 데이터 타입을 RETURN 문으로 선언 -- PL/SQL 블록에는 적어도 한 개의 RETURN 문이 있어야 한다.  --.. Oracle/etc function oracle pbj1102 https://jun89.tistory.com/41 https://jun89.tistory.com/41#entry41comment Wed, 26 Jan 2022 10:20:54 +0900 https://jun89.tistory.com/40 BCT (Block change tracking) - 마지막 백업 이후 변경된 블록들을 tracking 이 가능하도록 file 로 저장. - 변경된 block 들은 bct 파일의 bitmap로 관리되는데, 변경된 block 당 1bi.. Oracle/backup BCT Block change tracking oracle RMAN pbj1102 https://jun89.tistory.com/40 https://jun89.tistory.com/40#entry40comment Wed, 26 Jan 2022 10:19:28 +0900 https://jun89.tistory.com/39  CHECKPOINT NOT COMPLETE ~~~~~~~~~~~~~~~~~~~~~~~~~ 다량의 data를 import하거나 load하는 경우 혹은 batch 작업을 진행하는 경우, database작업이 중간 중간 멈추는 hang현상이 발생하면서, alert.log file에 다음과&.. Oracle/etc CHECKPOINT NOT COMPLETE pbj1102 https://jun89.tistory.com/39 https://jun89.tistory.com/39#entry39comment Wed, 26 Jan 2022 10:16:43 +0900 https://jun89.tistory.com/38 캐릭터셋(Character Set)#영역(Territory)별 지원 - 나라마다 날짜 표기 방법이 다름. - 영국 "일/월/연도"   미국 "월/일/연도" - 숫자 그룹 : 소수점 기호나 숫자를 그룹핑하는 방법이 지역마다 다름.    &nbs.. character set pbj1102 https://jun89.tistory.com/38 https://jun89.tistory.com/38#entry38comment Wed, 26 Jan 2022 10:16:02 +0900 https://jun89.tistory.com/37 -- 샘플 테이블 생성CREATE TABLE CHECK_SCHEDULE  ( INST_ID NUMBER, ACT_DATE DATE DEFAULT SYSDATE, ACT_DESC VARCHAR2(100)) ; -- 샘플 프로시져 생성 CREATE OR REPLACE PROCEDURE DO.. Oracle/etc DBMS_SCHEDULER oracle scheduler pbj1102 https://jun89.tistory.com/37 https://jun89.tistory.com/37#entry37comment Wed, 26 Jan 2022 10:10:52 +0900 https://jun89.tistory.com/36 아래의 글은  Redefinition 전체 과정을 모두 적어 놓은 것이다.  모델링 재정의가 필요한 테이블을 DBMS_REDEFINITION.CAN_REDEF_TABLE 다음 부분과, VIEW이름을 수정하면 그래로 수행 된다     CREATE OR REPLACE OUTLINE ILM_OUTLINE FOR CATEGORY O$VAN_QUE_MNT_.. Oracle/etc oracle redefinition pbj1102 https://jun89.tistory.com/36 https://jun89.tistory.com/36#entry36comment Wed, 26 Jan 2022 10:04:12 +0900 https://jun89.tistory.com/35 OGG(Oracle Golden Gate) 엔지니어가 아니므로 기본적인 설치와 운영 방법, 흐름만을 정리한 글이다.  자세한 부분은 점부파일을 확인한다.   sms 10.0.9.219oracle / oracle ogg 설치 경로 /data/ogg_home # source 10.0.9.218 oracle / oracle # target 10.0.9.220 .. Oracle/etc OGG oracle pbj1102 https://jun89.tistory.com/35 https://jun89.tistory.com/35#entry35comment Wed, 26 Jan 2022 09:58:38 +0900 https://jun89.tistory.com/34 Flashback( default : 사용안함 ) - table 의 특정 부분만 찾아서 변경하는 방법 - 이기능은 Undo Data 의 정보를 이요함. - 만약 Undo Segment를 다른 Transaction 에서 재사용하면 이기.. Oracle/etc flashback oracle systimestamp pbj1102 https://jun89.tistory.com/34 https://jun89.tistory.com/34#entry34comment Wed, 26 Jan 2022 09:48:04 +0900 https://jun89.tistory.com/33 DB Link 란? 데이터베이스 링크는 클라이언트 또는 현재의 데이터베이스에서 네트워크상의 다른 데이터베이스에 접속하기 위한 접속 설정을 정의하는 오라클 객체 이다. => 다른 DB로 접속 설정 정의.   - 우선 고려되어야 사항은 ORACLE INSTANCE가 두 개 이상이고, 각각의&n.. Oracle/etc db_link oracle pbj1102 https://jun89.tistory.com/33 https://jun89.tistory.com/33#entry33comment Wed, 26 Jan 2022 09:37:41 +0900 https://jun89.tistory.com/32 - 특정 Object 에 대해서 압축 비율/ 압축 방법에 대해서 조언을 해줌 - 압축 했을 때 공간 효율 등에 대해서 예상해준다 (Insert / Load 등의 통계를 활용함) - 테이블 compress 시 항상 관련된 인덱스는 un.. Oracle/etc compress dbms_compression.get_compression_ratio oracle query high pbj1102 https://jun89.tistory.com/32 https://jun89.tistory.com/32#entry32comment Wed, 26 Jan 2022 09:27:54 +0900 https://jun89.tistory.com/31 reorg => DB의 최적화로 성능향상을 위한 것. 1. 단편화 해소를 통한 성능 향상 - 인덱스 rebuild ex) alter index scott.ix_tbx_01 rebuild tablespace ts_work; * 인덱스 리빌딩시 nologging 전환.&nbs.. Oracle/etc oracle Reorg shrink pbj1102 https://jun89.tistory.com/31 https://jun89.tistory.com/31#entry31comment Wed, 26 Jan 2022 09:24:13 +0900 https://jun89.tistory.com/30 #테이블 스페이스 및 데이터 파일 oracle 은 데이터를 논리적으로 테이블스페이스에 저장                    물리적으로는 데이터 파일에 저장 테이블스페이스&nbsp.. Oracle/tablespace oracle tablspace pbj1102 https://jun89.tistory.com/30 https://jun89.tistory.com/30#entry30comment Tue, 25 Jan 2022 13:36:38 +0900 https://jun89.tistory.com/29 audit - 사용자의 행동을 감시하거나 데이터베이스에 관한 통계자료를 얻는 목적으로 사용됨. - 누가 어떤 테이블을 언제 사용하고, 언제 어떤 작업을 하는지를 기록할 수 있음. - 레코드에 대한 auditing 은 불가능. - auditing 걸게되면 시스템 부하를 줄 수&n.. Oracle/etc Audit oracle pbj1102 https://jun89.tistory.com/29 https://jun89.tistory.com/29#entry29comment Tue, 25 Jan 2022 13:30:20 +0900 https://jun89.tistory.com/28 *SYSAUX TBS 가 비정상적으로 늘어날 경우 아래와 같은 문구로 Shrink 가능   - 늘어나는 이유.     DB에서는 스냅샷 보관주기가 설정되어 있어 과거의 스냅샷은 delete 가 이루어짐.    하지만 자동으로 shrink를 해주지 않음.     결국 공간만 계속 늘어나는 것.    이 외에 비정상적인 부분    스.. Oracle/etc dbms_workload_repository.drop_snapshot_range oracle sysaux pbj1102 https://jun89.tistory.com/28 https://jun89.tistory.com/28#entry28comment Tue, 25 Jan 2022 12:37:12 +0900 https://jun89.tistory.com/27 -- 분산 트랜잭션 행 확인 select * from DBA_2PC_PENDING; -- 아래의 쿼리로 행 풀기. select 'rollback force '''||LOCAL_TRAN_ID||''';' from dba_2pc_pending; select 'COMMIT force '''|.. Oracle/etc 2pc pending oracle pbj1102 https://jun89.tistory.com/27 https://jun89.tistory.com/27#entry27comment Tue, 25 Jan 2022 12:20:49 +0900 https://jun89.tistory.com/26 HWM 확인 및 Resize 예상치 확인  * move & rebuild 작업 이후 HWM 줄어든 것을 확인 하기 위함    사용률 계산 식은 아래와 같음.  마지막 줄에 계산하는 쿼리 넣었음 filed_id 명 확인 select ','''||file_id||'''', tablespace_name, autoextensible, bytes/1024/1024 MB, MAX(byt.. Oracle/tablespace HWM resize pbj1102 https://jun89.tistory.com/26 https://jun89.tistory.com/26#entry26comment Tue, 25 Jan 2022 12:18:09 +0900 https://jun89.tistory.com/25 언두  - 서버프로세스가 사용자별로 언두세그먼트를 할당해서 언두 데이터를 관리  - 인스턴스당 여러개가 존재하지만 - 사용되는것은 하나  - 9i 부터는 aum (automatic undo management)   - 트랜잭셔널&nb.. Oracle/etc oracle Undo update 시간 예측 pbj1102 https://jun89.tistory.com/25 https://jun89.tistory.com/25#entry25comment Tue, 25 Jan 2022 12:04:24 +0900 https://jun89.tistory.com/24 - 생성 구문 CREATE SEQUENCE SQ01_TH_SP_AUTH_HST INCREMENT BY 1 START WITH 00000000001 MAXVALUE 99999999999 CYCLE CACHE 100 ; - 시퀀스 생성 문법 CREATE SEQUENCE sequence_name     &nb.. Oracle/etc cache enq:SQ - contention oracle order sequence pbj1102 https://jun89.tistory.com/24 https://jun89.tistory.com/24#entry24comment Tue, 25 Jan 2022 11:42:27 +0900 https://jun89.tistory.com/23 파티션 인덱스(partition index)종류 1. Partition Index     1) Global Partition Index       - Global Premixed Index       - Global Non-premixed Index => 지원  x    2) Local Partitionn Index.. Oracle/partition global index local index non-premixed oracle partition index premix pbj1102 https://jun89.tistory.com/23 https://jun89.tistory.com/23#entry23comment Tue, 25 Jan 2022 11:22:32 +0900 https://jun89.tistory.com/22 파티션이란 ? - 파티션테이블은 하나의 큰 테이블을 물리적으로 나눠놓은 것 - 물리적으로 나눠놨지만, 논리적으로는 하나의 테이블로 간주   파티션 종류 1) RANGE 2) LIST 3) HASH 4) INTERVAL     1) RANGE  - 가장 많이 쓰이는 형식   CREATE&.. Oracle/partition hash interval List oracle partition range pbj1102 https://jun89.tistory.com/22 https://jun89.tistory.com/22#entry22comment Tue, 25 Jan 2022 10:28:49 +0900 https://jun89.tistory.com/21 * lock --------------------- *lock 란 ? - db환경에서 concumency, consistency, 무결성 유지하기 위한 기능 * 공유 lock , 배타적 lock 1) 공유 Lock - 공유 Lock는 데이터를 읽고자 할&nbs.. Oracle/lock Latch LOCK oracle pbj1102 https://jun89.tistory.com/21 https://jun89.tistory.com/21#entry21comment Mon, 24 Jan 2022 17:06:21 +0900 https://jun89.tistory.com/20 # sys user 실행 - 패키지 설치 @$ORACLE_HOME/rdbms/admin/spcreate.sql   # perfstat user 실행 - 스냅샷 자동 스케줄링 등록 $ORALCE_HOME/rdbms/admin/spauto.sql SQL> EXEC STATSPACK.SNAP(i_snap.. Oracle/statspack oracle statspack pbj1102 https://jun89.tistory.com/20 https://jun89.tistory.com/20#entry20comment Mon, 24 Jan 2022 16:50:07 +0900 https://jun89.tistory.com/19 ## TDE (Transparent Data Encryption)  - 운영체제의 해킹, 스토리지 및 백업 미디어의 도난으로 인한 데이터 유출 방지 1) 테이블레벨암호화(10gR2) = Transparent Data Encryption = 컬럼&nbs.. Oracle/tde encrypted oracle TDE wallet pbj1102 https://jun89.tistory.com/19 https://jun89.tistory.com/19#entry19comment Mon, 24 Jan 2022 16:45:27 +0900 https://jun89.tistory.com/18 통계정보 갱신 방지exec dbms_stats.lock_table_stats('HPC_CP','GRADE_LOYALTY_BRAND'); 통계정보 LOCK 확인 select * from user_tab_statistics where stattype_locked='ALL' 통계정보 카피 EXEC dbms_stats.copy_table_stats('HPC_USR', 'T.. Oracle/통계정보 dbms_stats.lock_table_stats oracle pbj1102 https://jun89.tistory.com/18 https://jun89.tistory.com/18#entry18comment Mon, 24 Jan 2022 16:40:43 +0900 https://jun89.tistory.com/17 ====== PC_MC_TRD_AUTH 테이블 실행 계획 변경 이슈 분석 (10053 trace 사용) ======== #################### 정리 //** 발생 이슈 : 2018년 1월 2일 PN_MC_TRD_AUTH관련 쿼리의 실행계획이 변경됨 (2018/01/02 04시경, 2018/01/02/22시경) &nb.. Oracle/통계정보 Histogram oracle trace 10053 pbj1102 https://jun89.tistory.com/17 https://jun89.tistory.com/17#entry17comment Mon, 24 Jan 2022 15:23:50 +0900 https://jun89.tistory.com/16 #통계정보란  # 히스토그램 수집 아래 키워드 누락시. Default 수집하게 되어있음,method_opt=>'FOR ALL COLUMNS SIZE 1'   -- 수집 안함 * FOR ALL COLUMNS SIZE 1 = 칼럼에 대한 통계정보도 .. Oracle/통계정보 Analyze AUTOTASK BSLN_MAINTAIN_STATS_JOB dba_scheduler_windows DBMS_AUTO_TASK_ADMIN dbms_stats oracle 통계정보 파티션 통계정보 pbj1102 https://jun89.tistory.com/16 https://jun89.tistory.com/16#entry16comment Mon, 24 Jan 2022 15:16:25 +0900 https://jun89.tistory.com/15 - 해당 컬럼 분포도 확인 SELECT (1/CNT)*100 FROM (     SELECT /*+ parallel (a 4) */  COUNT(DISTINCT UNI_KEY) CNT      FROM VANBT.TLFRICAD a   &nb.. Oracle/index Clustering Factor index oracle pbj1102 https://jun89.tistory.com/15 https://jun89.tistory.com/15#entry15comment Mon, 24 Jan 2022 15:03:10 +0900