ORACLE 데이터 사전 방문 최적화
앞서 DBA 미 션 --- 통계 정보의 정확성 확보http://blog.csdn.net/robinson1988/article/details/6321537
오늘 저녁 에 어떤 형 들 이 QQ 에서 통계 정 보 를 수집 하 는 데 사용 할 SQL 스 크 립 트 가 있 냐 고 물 었 습 니 다. 거의 생각 하지 않 고 위 에 있 는 스 크 립 트 를 그대로 붙 였 습 니 다.
나중에 그 형 제 는 SQL 을 바 꿔 서 다음 SQL 은 200 여 초, 7 천 여 W 의 논리 로 읽 어야 한다 고 말 했다.
SELECT OWNER,
SEGMENT_NAME,
CASE
WHEN SIZE_GB < 0.5 THEN
30
WHEN SIZE_GB >= 0.5 AND SIZE_GB < 1 THEN
20
WHEN SIZE_GB >= 1 AND SIZE_GB < 5 THEN
10
WHEN SIZE_GB >= 5 AND SIZE_GB < 10 THEN
5
WHEN SIZE_GB >= 10 THEN
1
END AS PERCENT,
2 AS DEGREE
FROM (SELECT OWNER,
SEGMENT_NAME,
SUM(BYTES / 1024 / 1024 / 1024) SIZE_GB
FROM DBA_SEGMENTS A
WHERE OWNER IN ('DATASYNC_PRC','OSS03','BAS01','DATASYNC_1','DATASYNC_2','OSS_CMS')
AND SEGMENT_NAME IN
(SELECT DISTINCT TABLE_NAME
FROM DBA_TAB_STATISTICS B
WHERE (LAST_ANALYZED IS NULL OR STALE_STATS = 'YES')
AND OWNER IN('DATASYNC_PRC','OSS03','BAS01','DATASYNC_1','DATASYNC_2','OSS_CMS'))
GROUP BY OWNER, SEGMENT_NAME); 이 SQL 구문 실행 계획 은 다음 과 같 습 니 다.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
---------------------------------------------------------------------------------------------------------------------------
--------------------
Plan hash value: 2028155339
----------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
----------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 22412 | 3852K| 113K (2)| 00:05:55 |
| 1 | HASH GROUP BY | | 22412 | 3852K| 113K (2)| 00:05:55 |
|* 2 | FILTER | | | | | |
| 3 | VIEW | SYS_DBA_SEGS | 2837 | 487K| 110K (2)| 00:05:46 |
| 4 | UNION-ALL | | | | | |
| 5 | NESTED LOOPS | | 1840 | 296K| 93690 (2)| 00:04:53 |
|* 6 | HASH JOIN | | 1779 | 272K| 93690 (2)| 00:04:53 |
| 7 | TABLE ACCESS FULL | TS$ | 172 | 1548 | 54 (2)| 00:00:01 |
| 8 | NESTED LOOPS | | 1779 | 257K| 93635 (2)| 00:04:53 |
|* 9 | HASH JOIN | | 6571 | 757K| 80450 (3)| 00:04:12 |
|* 10 | FILTER | | | | | |
|* 11 | HASH JOIN RIGHT OUTER | | 7221 | 423K| 10278 (6)| 00:00:33 |
| 12 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 13 | TABLE ACCESS FULL | OBJ$ | 3854K| 158M| 10133 (5)| 00:00:32 |
| 14 | VIEW | SYS_OBJECTS | 3507K| 194M| 70065 (2)| 00:03:40 |
| 15 | UNION-ALL | | | | | |
|* 16 | TABLE ACCESS FULL | TAB$ | 210K| 5548K| 15995 (2)| 00:00:51 |
| 17 | TABLE ACCESS FULL | TABPART$ | 148K| 2895K| 727 (3)| 00:00:03 |
| 18 | TABLE ACCESS FULL | CLU$ | 10 | 150 | 14128 (2)| 00:00:45 |
|* 19 | TABLE ACCESS FULL | IND$ | 750K| 16M| 16045 (2)| 00:00:51 |
| 20 | TABLE ACCESS FULL | INDPART$ | 620K| 11M| 2424 (4)| 00:00:08 |
|* 21 | TABLE ACCESS FULL | LOB$ | 2273 | 50006 | 15929 (2)| 00:00:50 |
| 22 | TABLE ACCESS FULL | TABSUBPART$ | 269K| 5261K| 932 (4)| 00:00:03 |
| 23 | TABLE ACCESS FULL | INDSUBPART$ | 1503K| 28M| 3868 (5)| 00:00:13 |
| 24 | TABLE ACCESS FULL | LOBFRAG$ | 2977 | 65494 | 17 (0)| 00:00:01 |
|* 25 | TABLE ACCESS CLUSTER | SEG$ | 1 | 30 | 2 (0)| 00:00:01 |
|* 26 | INDEX UNIQUE SCAN | I_FILE#_BLOCK# | 1 | | 1 (0)| 00:00:01 |
|* 27 | INDEX UNIQUE SCAN | I_FILE2 | 1 | 8 | 0 (0)| 00:00:01 |
| 28 | NESTED LOOPS | | 1 | 109 | 2274 (1)| 00:00:08 |
| 29 | NESTED LOOPS | | 1 | 101 | 2274 (1)| 00:00:08 |
|* 30 | FILTER | | | | | |
|* 31 | HASH JOIN OUTER | | 1 | 92 | 2273 (1)| 00:00:08 |
| 32 | NESTED LOOPS | | 568 | 42600 | 2245 (1)| 00:00:08 |
|* 33 | TABLE ACCESS FULL | UNDO$ | 1116 | 45756 | 5 (0)| 00:00:01 |
|* 34 | TABLE ACCESS CLUSTER | SEG$ | 1 | 34 | 2 (0)| 00:00:01 |
|* 35 | INDEX UNIQUE SCAN | I_FILE#_BLOCK# | 1 | | 1 (0)| 00:00:01 |
| 36 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 37 | TABLE ACCESS CLUSTER | TS$ | 1 | 9 | 1 (0)| 00:00:01 |
|* 38 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 |
|* 39 | INDEX UNIQUE SCAN | I_FILE2 | 1 | 8 | 0 (0)| 00:00:01 |
|* 40 | HASH JOIN | | 996 | 77688 | 14672 (1)| 00:00:46 |
| 41 | TABLE ACCESS FULL | TS$ | 172 | 1548 | 54 (2)| 00:00:01 |
|* 42 | FILTER | | | | | |
|* 43 | HASH JOIN RIGHT OUTER | | 996 | 68724 | 14618 (1)| 00:00:46 |
| 44 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 45 | NESTED LOOPS | | 531K| 26M| 14574 (1)| 00:00:46 |
| 46 | TABLE ACCESS FULL | FILE$ | 872 | 10464 | 3 (0)| 00:00:01 |
|* 47 | TABLE ACCESS CLUSTER | SEG$ | 610 | 24400 | 23 (0)| 00:00:01 |
|* 48 | INDEX RANGE SCAN | I_FILE#_BLOCK# | 1 | | 2 (0)| 00:00:01 |
| 49 | VIEW | DBA_TAB_STATISTICS | 42 | 1932 | 2828 (6)| 00:00:09 |
| 50 | UNION-ALL | | | | | |
|* 51 | FILTER | | | | | |
| 52 | NESTED LOOPS OUTER | | 1 | 115 | 23 (0)| 00:00:01 |
| 53 | NESTED LOOPS | | 1 | 97 | 21 (0)| 00:00:01 |
| 54 | NESTED LOOPS OUTER | | 1 | 74 | 19 (0)| 00:00:01 |
| 55 | NESTED LOOPS | | 1 | 67 | 19 (0)| 00:00:01 |
| 56 | INLIST ITERATOR | | | | | |
| 57 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 58 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 59 | INDEX RANGE SCAN | I_OBJ2 | 1 | 50 | 2 (0)| 00:00:01 |
|* 60 | INDEX UNIQUE SCAN | I_TAB_STATS
|* 61 | TABLE ACCESS CLUSTER | TAB$ | 1 | 23 | 2 (0)| 00:00:01 |
|* 62 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 63 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|* 64 | INDEX UNIQUE SCAN | I_MON_MODS_ALL| 65 | NESTED LOOPS | | 1 | 147 | 775 (6)| 00:00:03 |
|* 66 | FILTER | | | | | |
| 67 | NESTED LOOPS OUTER | | 1 | 141 | 773 (6)| 00:00:03 |
|* 68 | HASH JOIN | | 1 | 123 | 771 (6)| 00:00:03 |
| 69 | NESTED LOOPS OUTER | | 1 | 65 | 19 (0)| 00:00:01 |
| 70 | NESTED LOOPS | | 1 | 58 | 19 (0)| 00:00:01 |
| 71 | INLIST ITERATOR | | | | | |
| 72 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 73 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 74 | INDEX RANGE SCAN | I_OBJ2 | 1 | 41 | 2 (0)| 00:00:01 |
|* 75 | INDEX UNIQUE SCAN | I_TAB_STATS| 76 | VIEW | TABPARTV$ | 148K| 8397K| 747 (6)| 00:00:03 |
|* 77 | TABLE ACCESS FULL | TABPART$ | 148K| 4632K| 747 (6)| 00:00:03 |
| 78 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|* 79 | INDEX UNIQUE SCAN | I_MON_MODS_ALL| 80 | TABLE ACCESS CLUSTER | TAB$ | 21 | 126 | 2 (0)| 00:00:01 |
|* 81 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 82 | NESTED LOOPS | | 1 | 140 | 737 (4)| 00:00:03 |
| 83 | NESTED LOOPS | | 1 | 134 | 735 (4)| 00:00:03 |
| 84 | NESTED LOOPS | | 1 | 117 | 734 (4)| 00:00:03 |
| 85 | NESTED LOOPS OUTER | | 1 | 76 | 731 (4)| 00:00:03 |
| 86 | VIEW | TABPARTV$ | 1 | 58 | 729 (4)| 00:00:03 |
|* 87 | TABLE ACCESS FULL | TABPART$ | 1 | 32 | 729 (4)| 00:00:03 |
| 88 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|* 89 | INDEX UNIQUE SCAN | I_MON_MODS_ALL|* 90 | TABLE ACCESS BY INDEX ROWID | OBJ$ | 1 | 41 | 3 (0)| 00:00:01 |
|* 91 | INDEX RANGE SCAN | I_OBJ1 | 1 | | 2 (0)| 00:00:01 |
|* 92 | TABLE ACCESS CLUSTER | USER$ | 1 | 17 | 1 (0)| 00:00:01 |
|* 93 | INDEX UNIQUE SCAN | I_USER# | 1 | | 0 (0)| 00:00:01 |
| 94 | TABLE ACCESS CLUSTER | TAB$ | 21 | 126 | 2 (0)| 00:00:01 |
|* 95 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 96 | NESTED LOOPS | | 3 | 360 | 146 (5)| 00:00:01 |
|* 97 | FILTER | | | | | |
| 98 | NESTED LOOPS OUTER | | 1 | 114 | 144 (5)| 00:00:01 |
|* 99 | HASH JOIN | | 1 | 96 | 142 (5)| 00:00:01 |
| 100 | NESTED LOOPS OUTER | | 1 | 65 | 19 (0)| 00:00:01 |
| 101 | NESTED LOOPS | | 1 | 58 | 19 (0)| 00:00:01 |
| 102 | INLIST ITERATOR | | | | | |
| 103 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|*104 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|*105 | INDEX RANGE SCAN | I_OBJ2 | 1 | 41 | 2 (0)| 00:00:01 |
|*106 | INDEX UNIQUE SCAN | I_TAB_STATS| 107 | VIEW | TABCOMPARTV$ | 19453 | 588K| 122 (5)| 00:00:01 |
| 108 | TABLE ACCESS FULL | TABCOMPART$ | 19453 | 398K| 122 (5)| 00:00:01 |
| 109 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|*110 | INDEX UNIQUE SCAN | I_MON_MODS_ALL| 111 | TABLE ACCESS CLUSTER | TAB$ | 160 | 960 | 2 (0)| 00:00:01 |
|*112 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 113 | NESTED LOOPS | | 35 | 5810 | 1146 (8)| 00:00:04 |
| 114 | NESTED LOOPS OUTER | | 1 | 160 | 1144 (8)| 00:00:04 |
| 115 | NESTED LOOPS | | 1 | 153 | 1144 (8)| 00:00:04 |
|*116 | FILTER | | | | | |
| 117 | NESTED LOOPS OUTER | | 1 | 147 | 1142 (8)| 00:00:04 |
|*118 | HASH JOIN | | 11 | 1419 | 1120 (8)| 00:00:04 |
|*119 | HASH JOIN | | 1 | 70 | 142 (5)| 00:00:01 |
| 120 | NESTED LOOPS | | 1 | 58 | 19 (0)| 00:00:01 |
| 121 | INLIST ITERATOR | | | | | |
| 122 | TABLE ACCESS BY INDEX ROWID| USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|*123 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|*124 | INDEX RANGE SCAN | I_OBJ2 | 1 | 41 | 2 (0)| 00:00:01 |
| 125 | VIEW | TABCOMPARTV$ | 19453 | 227K| 122 (5)| 00:00:01 |
| 126 | TABLE ACCESS FULL | TABCOMPART$ | 19453 | 227K| 122 (5)| 00:00:01 |
| 127 | VIEW | TABSUBPARTV$ | 269K| 15M| 969 (8)| 00:00:04 |
|*128 | TABLE ACCESS FULL | TABSUBPART$ | 269K| 8681K| 969 (8)| 00:00:04 |
| 129 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|*130 | INDEX UNIQUE SCAN | I_MON_MODS_ALL|*131 | INDEX RANGE SCAN | I_OBJ1 | 1 | 6 | 2 (0)| 00:00:01 |
|*132 | INDEX UNIQUE SCAN | I_TAB_STATS| 133 | TABLE ACCESS CLUSTER | TAB$ | 160 | 960 | 2 (0)| 00:00:01 |
|*134 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
|*135 | FILTER | | | | | |
|*136 | FILTER | | | | | |
| 137 | NESTED LOOPS OUTER | | 1 | 51 | 3 (34)| 00:00:01 |
| 138 | NESTED LOOPS OUTER | | 1 | 36 | 2 (50)| 00:00:01 |
|*139 | FIXED TABLE FULL | X$KQFTA | 1 | 21 | 1 (100)| 00:00:01 |
|*140 | TABLE ACCESS BY INDEX ROWID | FIXED_OBJ$ | 1 | 15 | 1 (0)| 00:00:01 |
|*141 | INDEX UNIQUE SCAN | I_FIXED_OBJ| 142 | TABLE ACCESS BY INDEX ROWID | TAB_STATS$ | 1 | 15 | 1 (0)| 00:00:01 |
|*143 | INDEX UNIQUE SCAN | I_TAB_STATS----------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
2 - filter( EXISTS (SELECT 0 FROM ( (SELECT "U"."NAME" "OWNER","O"."NAME" "TABLE_NAME",NULL
"PARTITION_NAME",NULL "PARTITION_POSITION",NULL "SUBPARTITION_NAME",NULL
"SUBPARTITION_POSITION",'TABLE' "OBJECT_TYPE","T"."ROWCNT"
"NUM_ROWS",DECODE(BITAND("T"."PROPERTY",64),0,"T"."BLKCNT",TO_NUMBER(NULL))
"BLOCKS",DECODE(BITAND("T"."PROPERTY",64),0,"T"."EMPCNT",TO_NUMBER(NULL))
"EMPTY_BLOCKS",DECODE(BITAND("T"."PROPERTY",64),0,"T"."AVGSPC",TO_NUMBER(NULL))
"AVG_SPACE","T"."CHNCNT" "CHAIN_CNT","T"."AVGRLN" "AVG_ROW_LEN","T"."AVGSPC_FLB"
"AVG_SPACE_FREELIST_BLOCKS",DECODE(BITAND("T"."PROPERTY",64),0,"T"."FLBCNT",TO_NUMBER(NULL))
"NUM_FREELIST_BLOCKS","TS"."CACHEDBLK" "AVG_CACHED_BLOCKS","TS"."CACHEHIT"
"AVG_CACHE_HIT_RATIO","T"."SAMPLESIZE" "SAMPLE_SIZE","T"."ANALYZETIME"
"LAST_ANALYZED",DECODE(BITAND("T"."FLAGS",512),0,'NO','YES')
"GLOBAL_STATS",DECODE(BITAND("T"."FLAGS",256),0,'NO','YES')
"USER_STATS",DECODE(BITAND("T"."TRIGFLAG",67108864)+BITAND("T"."TRIGFLAG",134217728),0,NULL,67108864,'DA
TA',134217728,'CACHE','ALL') "STATTYPE_LOCKED",CASE WHEN "T"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"T"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCEN
T',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END "STALE_STATS" FROM
"SYS"."MON_MODS_ALL{1}quot; "M","SYS"."TAB_STATS{1}quot; "TS","SYS"."TAB{1}quot; "T","SYS"."OBJ{1}quot; "O","SYS"."USER WHERE ("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS') AND "O"."NAMESPACE"=1 AND
"O"."NAME"=:B1 AND "O"."OWNER#"="U"."USER#" AND "O"."SUBNAME" IS NULL AND "O"."REMOTEOWNER" IS NULL AND
"O"."LINKNAME" IS NULL AND "O"."OBJ#"="T"."OBJ#" AND BITAND("T"."PROPERTY",1)=0 AND
"O"."OBJ#"="TS"."OBJ#"(+) AND "T"."OBJ#"="M"."OBJ#"(+) AND ("T"."ANALYZETIME" IS NULL OR CASE WHEN
"T"."ANALYZETIME" IS NULL THEN NULL WHEN ("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"T"."ROWCNT"*TO_NUMB
ER("DBMS_STATS"."GET_PREFS"('STALE_PERCENT',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1)
THEN 'YES' ELSE 'NO' END ='YES')) UNION ALL (SELECT "U"."NAME" "OWNER","O"."NAME"
"TABLE_NAME","O"."SUBNAME" "PARTITION_NAME","TP"."PART#" "PARTITION_POSITION",NULL
"SUBPARTITION_NAME",NULL "SUBPARTITION_POSITION",'PARTITION' "OBJECT_TYPE","TP"."ROWCNT"
"NUM_ROWS","TP"."BLKCNT" "BLOCKS","TP"."EMPCNT" "EMPTY_BLOCKS","TP"."AVGSPC" "AVG_SPACE","TP"."CHNCNT"
"CHAIN_CNT","TP"."AVGRLN" "AVG_ROW_LEN",TO_NUMBER(NULL) "AVG_SPACE_FREELIST_BLOCKS",TO_NUMBER(NULL)
"NUM_FREELIST_BLOCKS","TS"."CACHEDBLK" "AVG_CACHED_BLOCKS","TS"."CACHEHIT"
"AVG_CACHE_HIT_RATIO","TP"."SAMPLESIZE" "SAMPLE_SIZE","TP"."ANALYZETIME"
"LAST_ANALYZED",DECODE(BITAND("TP"."FLAGS",16),0,'NO','YES')
"GLOBAL_STATS",DECODE(BITAND("TP"."FLAGS",8),0,'NO','YES')
"USER_STATS",DECODE(DECODE(BITAND("TAB"."TRIGFLAG",67108864)+BITAND("TP"."FLAGS",32),0,0,1)+DECODE(BITAN
D("TAB"."TRIGFLAG",134217728)+BITAND("TP"."FLAGS",64),0,0,2),0,NULL,1,'DATA',2,'CACHE','ALL')
"STATTYPE_LOCKED",CASE WHEN "TP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCE
NT',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END "STALE_STATS"
FROM "SYS"."MON_MODS_ALL{1}quot; "M","SYS"."TAB{1}quot; "TAB","SYS"."TAB_STATS{1}quot; "TS", (SELECT "OBJ#"
"OBJ#","DATAOBJ#" "DATAOBJ#","BO#" "BO#",ROW_NUMBER() OVER ( PARTITION BY "BO#" ORDER BY "PART#")
"PART#","HIBOUNDLEN" "HIBOUNDLEN","HIBOUNDVAL" "HIBOUNDVAL","TS#" "TS#","FILE#" "FILE#","BLOCK#"
"BLOCK#","PCTFREE{1}quot; "PCTFREE{1}quot;,"PCTUSED{1}quot; "PCTUSED{1}quot;,"INITRANS" "INITRANS","MAXTRANS"
"MAXTRANS","FLAGS" "FLAGS","ANALYZETIME" "ANALYZETIME","SAMPLESIZE" "SAMPLESIZE","ROWCNT"
"ROWCNT","BLKCNT" "BLKCNT","EMPCNT" "EMPCNT","AVGSPC" "AVGSPC","CHNCNT" "CHNCNT","AVGRLN"
"AVGRLN","PART#" "PHYPART#" FROM SYS."TABPART{1}quot; "TABPART{1}quot; WHERE "FILE#">0 AND "BLOCK#">0)
"TP","SYS"."OBJ{1}quot; "O","SYS"."USER{1}quot; "U" WHERE ("U"."NAME"='BAS01' OR "U"."NAME"='DATAS)
6 - access("S"."TS#"="TS"."TS#")
9 - access("O"."OBJ#"="SO"."OBJECT_ID" AND "O"."TYPE#"="SO"."OBJECT_TYPE_ID")
10 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR
NVL("U"."NAME",'SYS')='DATASYNC_2' OR NVL("U"."NAME",'SYS')='OSS_CMS')
11 - access("O"."OWNER#"="U"."USER#"(+))
16 - filter(BITAND("T"."PROPERTY",1024)=0)
19 - filter("I"."TYPE#"=1 OR "I"."TYPE#"=2 OR "I"."TYPE#"=3 OR "I"."TYPE#"=4 OR "I"."TYPE#"=6 OR
"I"."TYPE#"=7 OR "I"."TYPE#"=8 OR "I"."TYPE#"=9)
21 - filter(BITAND("L"."PROPERTY",64)=0 OR BITAND("L"."PROPERTY",128)=128)
25 - filter("S"."TYPE#"="SO"."SEGMENT_TYPE_ID")
26 - access("S"."TS#"="SO"."TS_NUMBER" AND "S"."FILE#"="SO"."HEADER_FILE" AND
"S"."BLOCK#"="SO"."HEADER_BLOCK")
27 - access("S"."TS#"="F"."TS#" AND "S"."FILE#"="F"."RELFILE#")
30 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR
NVL("U"."NAME",'SYS')='DATASYNC_2' OR NVL("U"."NAME",'SYS')='OSS_CMS')
31 - access("S"."USER#"="U"."USER#"(+))
33 - filter("UN"."STATUS{1}quot;<>1)
34 - filter("S"."TYPE#"=1 OR "S"."TYPE#"=10)
35 - access("S"."TS#"="UN"."TS#" AND "S"."FILE#"="UN"."FILE#" AND "S"."BLOCK#"="UN"."BLOCK#")
38 - access("S"."TS#"="TS"."TS#")
39 - access("UN"."TS#"="F"."TS#" AND "UN"."FILE#"="F"."RELFILE#")
40 - access("S"."TS#"="TS"."TS#")
42 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR
NVL("U"."NAME",'SYS')='DATASYNC_2' OR NVL("U"."NAME",'SYS')='OSS_CMS')
43 - access("S"."USER#"="U"."USER#"(+))
47 - filter("S"."TYPE#"<>6 AND "S"."TYPE#"<>5 AND "S"."TYPE#"<>8 AND "S"."TYPE#"<>10 AND
"S"."TYPE#"<>1)
48 - access("S"."TS#"="F"."TS#" AND "S"."FILE#"="F"."RELFILE#")
51 - filter("T"."ANALYZETIME" IS NULL OR CASE WHEN "T"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"T"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCEN
T',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
58 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
59 - access("O"."OWNER#"="U"."USER#" AND "O"."NAME"=:B1 AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER"
IS NULL AND "O"."LINKNAME" IS NULL AND "O"."SUBNAME" IS NULL)
filter("O"."SUBNAME" IS NULL AND "O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
60 - access("O"."OBJ#"="TS"."OBJ#"(+))
61 - filter(BITAND("T"."PROPERTY",1)=0)
62 - access("O"."OBJ#"="T"."OBJ#")
64 - access("T"."OBJ#"="M"."OBJ#"(+))
66 - filter("TP"."ANALYZETIME" IS NULL OR CASE WHEN "TP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCE
NT',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
68 - access("O"."OBJ#"="TP"."OBJ#")
73 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
74 - access("O"."OWNER#"="U"."USER#" AND "O"."NAME"=:B1 AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER"
IS NULL AND "O"."LINKNAME" IS NULL)
filter("O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
75 - access("O"."OBJ#"="TS"."OBJ#"(+))
77 - filter("FILE#">0 AND "BLOCK#">0)
79 - access("TP"."OBJ#"="M"."OBJ#"(+))
81 - access("TP"."BO#"="TAB"."OBJ#")
87 - filter("BLOCK#"=0 AND "FILE#"=0)
89 - access("TP"."OBJ#"="M"."OBJ#"(+))
90 - filter("O"."NAME"=:B1 AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS
NULL)
91 - access("O"."OBJ#"="TP"."OBJ#")
92 - filter(("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS') AND ("TP"."ANALYZETIME" IS
NULL OR CASE WHEN "TP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCE
NT',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES'))
93 - access("O"."OWNER#"="U"."USER#")
95 - access("TP"."BO#"="TAB"."OBJ#")
97 - filter("TCP"."ANALYZETIME" IS NULL OR CASE WHEN "TCP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TCP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERC
ENT',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
99 - access("O"."OBJ#"="TCP"."OBJ#")
104 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
105 - access("O"."OWNER#"="U"."USER#" AND "O"."NAME"=:B1 AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER"
IS NULL AND "O"."LINKNAME" IS NULL)
filter("O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
106 - access("O"."OBJ#"="TS"."OBJ#"(+))
110 - access("TCP"."OBJ#"="M"."OBJ#"(+))
112 - access("TCP"."BO#"="TAB"."OBJ#")
116 - filter("TSP"."ANALYZETIME" IS NULL OR CASE WHEN "TSP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TSP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERC
ENT',"U"."NAME","PO"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
118 - access("TCP"."OBJ#"="TSP"."POBJ#")
119 - access("PO"."OBJ#"="TCP"."OBJ#")
123 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
124 - access("U"."USER#"="PO"."OWNER#" AND "PO"."NAME"=:B1 AND "PO"."NAMESPACE"=1 AND
"PO"."REMOTEOWNER" IS NULL AND "PO"."LINKNAME" IS NULL)
filter("PO"."REMOTEOWNER" IS NULL AND "PO"."LINKNAME" IS NULL)
128 - filter("FILE#">0 AND "BLOCK#">0)
130 - access("TSP"."OBJ#"="M"."OBJ#"(+))
131 - access("SO"."OBJ#"="TSP"."OBJ#")
132 - access("SO"."OBJ#"="TS"."OBJ#"(+))
134 - access("TCP"."BO#"="TAB"."OBJ#")
135 - filter(NULL IS NOT NULL)
136 - filter(DECODE(NVL("FOBJ"."OBJ#",0),0,TO_DATE(NULL),INTERNAL_FUNCTION("ST"."ANALYZETIME")) IS
NULL)
139 - filter("T"."KQFTANAM"=:B1)
140 - filter("T"."KQFTAVER"="FOBJ"."TIMESTAMP"(+)-TO_DATE(' 1991-01-01 00:00:00', 'syyyy-mm-dd
hh24:mi:ss'))
141 - access("T"."KQFTAOBJ"="FOBJ"."OBJ#"(+))
143 - access("T"."KQFTAOBJ"="ST"."OBJ#"(+))
303 。 그 때 는 오후 라 서 머리 가 어 지 러 워 서 이 일 에 별로 관심 이 없 었 습 니 다. 밤 10 시가 넘 어서 잠 이 들 었 습 니 다. 그 친구 가 또 QQ 에서 저 를 찾 아 왔 습 니 다. 하하, 잠 을 잤 습 니 다. 게다가 저 는 큰 S QL 을 보 자마자 닭 피 를 때 린 것 같 았 습 니 다. 그래서 다시 그 친구 에 게 SQL 을 보 내 달라 고 부 탁 했 습 니 다. 30 분 동안 의 분석 을 통 해 HINT 를 추 가 했 습 니 다.
SELECT OWNER,
SEGMENT_NAME,
CASE
WHEN SIZE_GB < 0.5 THEN
30
WHEN SIZE_GB >= 0.5 AND SIZE_GB < 1 THEN
20
WHEN SIZE_GB >= 1 AND SIZE_GB < 5 THEN
10
WHEN SIZE_GB >= 5 AND SIZE_GB < 10 THEN
5
WHEN SIZE_GB >= 10 THEN
1
END AS PERCENT,
2 AS DEGREE
FROM (SELECT OWNER,
SEGMENT_NAME,
SUM(BYTES / 1024 / 1024 / 1024) SIZE_GB
FROM DBA_SEGMENTS A
WHERE OWNER IN ('DATASYNC_PRC','OSS03','BAS01','DATASYNC_1','DATASYNC_2','OSS_CMS')
AND SEGMENT_NAME IN
(SELECT /*+ UNNEST */ DISTINCT TABLE_NAME
FROM DBA_TAB_STATISTICS B
WHERE (LAST_ANALYZED IS NULL OR STALE_STATS = 'YES')
AND OWNER IN('DATASYNC_PRC','OSS03','BAS01','DATASYNC_1','DATASYNC_2','OSS_CMS'))
GROUP BY OWNER, SEGMENT_NAME); 실행 계획 은 다음 과 같다.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
----------------------------------------------------------------------------------------------------------------------------
--------------------
Plan hash value: 539876731
------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 22412 | 4224K| 122K (3)| 00:06:24 |
| 1 | HASH GROUP BY | | 22412 | 4224K| 122K (3)| 00:06:24 |
|* 2 | HASH JOIN | | 22412 | 4224K| 122K (3)| 00:06:24 |
| 3 | VIEW | VW_NSO_1 | 790 | 13430 | 11899 (8)| 00:00:38 |
| 4 | HASH UNIQUE | | 790 | 36340 | 11899 (8)| 00:00:38 |
| 5 | VIEW | DBA_TAB_STATISTICS | 790 | 36340 | 11898 (8)| 00:00:38 |
| 6 | UNION-ALL | | | | | |
| 7 | NESTED LOOPS OUTER | | 231 | 26565 | 3598 (7)| 00:00:12 |
|* 8 | FILTER | | | | | |
|* 9 | HASH JOIN OUTER | | 231 | 24948 | 3598 (7)| 00:00:12 |
| 10 | NESTED LOOPS | | 1321 | 116K| 1885 (1)| 00:00:06 |
| 11 | NESTED LOOPS | | 1605 | 105K| 188 (1)| 00:00:01 |
| 12 | INLIST ITERATOR | | | | | |
| 13 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 14 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 15 | INDEX RANGE SCAN | I_OBJ2 | 267 | 13350 | 30 (0)| 00:00:01 |
|* 16 | TABLE ACCESS CLUSTER | TAB$ | 1 | 23 | 2 (0)| 00:00:01 |
|* 17 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 18 | TABLE ACCESS FULL | MON_MODS_ALL$ | 1926K| 33M| 1653 (10)| 00:00:06 |
|* 19 | INDEX UNIQUE SCAN | I_TAB_STATS{1}OBJ# | 1 | 7 | 0 (0)| 00:00:01 |
| 20 | NESTED LOOPS OUTER | | 265 | 43195 | 3176 (9)| 00:00:10 |
| 21 | NESTED LOOPS | | 265 | 41340 | 3176 (9)| 00:00:10 |
|* 22 | FILTER | | | | | |
|* 23 | HASH JOIN OUTER | | 261 | 39150 | 2652 (11)| 00:00:09 |
|* 24 | HASH JOIN | | 930 | 119K| 940 (5)| 00:00:03 |
| 25 | NESTED LOOPS | | 5315 | 301K| 188 (1)| 00:00:01 |
| 26 | INLIST ITERATOR | | | | | |
| 27 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 28 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 29 | INDEX RANGE SCAN | I_OBJ2 | 886 | 36326 | 30 (0)| 00:00:01 |
| 30 | VIEW | TABPARTV$ | 148K| 10M| 747 (6)| 00:00:03 |
|* 31 | TABLE ACCESS FULL | TABPART$ | 148K| 4632K| 747 (6)| 00:00:03 |
| 32 | TABLE ACCESS FULL | MON_MODS_ALL$ | 1926K| 33M| 1653 (10)| 00:00:06 |
| 33 | TABLE ACCESS CLUSTER | TAB$ | 1 | 6 | 2 (0)| 00:00:01 |
|* 34 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
|* 35 | INDEX UNIQUE SCAN | I_TAB_STATS{1}OBJ# | 1 | 7 | 0 (0)| 00:00:01 |
| 36 | NESTED LOOPS | | 1 | 156 | 737 (4)| 00:00:03 |
| 37 | NESTED LOOPS | | 1 | 150 | 735 (4)| 00:00:03 |
| 38 | NESTED LOOPS | | 1 | 133 | 734 (4)| 00:00:03 |
| 39 | NESTED LOOPS OUTER | | 1 | 92 | 731 (4)| 00:00:03 |
| 40 | VIEW | TABPARTV$ | 1 | 74 | 729 (4)| 00:00:03 |
|* 41 | TABLE ACCESS FULL | TABPART$ | 1 | 32 | 729 (4)| 00:00:03 |
| 42 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|* 43 | INDEX UNIQUE SCAN | I_MON_MODS_ALL{1}OBJ | 1 | | 1 (0)| 00:00:01 |
|* 44 | TABLE ACCESS BY INDEX ROWID | OBJ$ | 1 | 41 | 3 (0)| 00:00:01 |
|* 45 | INDEX RANGE SCAN | I_OBJ1 | 1 | | 2 (0)| 00:00:01 |
|* 46 | TABLE ACCESS CLUSTER | USER$ | 1 | 17 | 1 (0)| 00:00:01 |
|* 47 | INDEX UNIQUE SCAN | I_USER# | 1 | | 0 (0)| 00:00:01 |
| 48 | TABLE ACCESS CLUSTER | TAB$ | 1 | 6 | 2 (0)| 00:00:01 |
|* 49 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 50 | NESTED LOOPS | | 52 | 7124 | 659 (2)| 00:00:03 |
| 51 | NESTED LOOPS OUTER | | 51 | 6681 | 556 (2)| 00:00:02 |
|* 52 | FILTER | | | | | |
| 53 | NESTED LOOPS OUTER | | 51 | 6324 | 556 (2)| 00:00:02 |
|* 54 | HASH JOIN | | 122 | 12932 | 311 (3)| 00:00:01 |
| 55 | NESTED LOOPS | | 5315 | 301K| 188 (1)| 00:00:01 |
| 56 | INLIST ITERATOR | | | | | |
| 57 | TABLE ACCESS BY INDEX ROWID | USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 58 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 59 | INDEX RANGE SCAN | I_OBJ2 | 886 | 36326 | 30 (0)| 00:00:01 |
| 60 | VIEW | TABCOMPARTV$ | 19453 | 911K| 122 (5)| 00:00:01 |
| 61 | TABLE ACCESS FULL | TABCOMPART$ | 19453 | 398K| 122 (5)| 00:00:01 |
| 62 | TABLE ACCESS BY INDEX ROWID | MON_MODS_ALL$ | 1 | 18 | 2 (0)| 00:00:01 |
|* 63 | INDEX UNIQUE SCAN | I_MON_MODS_ALL{1}OBJ | 1 | | 1 (0)| 00:00:01 |
|* 64 | INDEX UNIQUE SCAN | I_TAB_STATS{1}OBJ# | 1 | 7 | 0 (0)| 00:00:01 |
| 65 | TABLE ACCESS CLUSTER | TAB$ | 1 | 6 | 2 (0)| 00:00:01 |
|* 66 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 67 | NESTED LOOPS OUTER | | 240 | 46800 | 3728 (9)| 00:00:12 |
| 68 | NESTED LOOPS | | 240 | 45120 | 3728 (9)| 00:00:12 |
|* 69 | FILTER | | | | | |
|* 70 | HASH JOIN OUTER | | 240 | 43680 | 3247 (10)| 00:00:11 |
|* 71 | HASH JOIN | | 1713 | 274K| 1534 (6)| 00:00:05 |
| 72 | NESTED LOOPS | | 124 | 11160 | 556 (2)| 00:00:02 |
|* 73 | HASH JOIN | | 122 | 10248 | 311 (3)| 00:00:01 |
| 74 | NESTED LOOPS | | 5315 | 301K| 188 (1)| 00:00:01 |
| 75 | INLIST ITERATOR | | | | | |
| 76 | TABLE ACCESS BY INDEX ROWID| USER$ | 6 | 102 | 7 (0)| 00:00:01 |
|* 77 | INDEX UNIQUE SCAN | I_USER1 | 6 | | 2 (0)| 00:00:01 |
|* 78 | INDEX RANGE SCAN | I_OBJ2 | 886 | 36326 | 30 (0)| 00:00:01 |
| 79 | VIEW | TABCOMPARTV$ | 19453 | 493K| 122 (5)| 00:00:01 |
| 80 | TABLE ACCESS FULL | TABCOMPART$ | 19453 | 227K| 122 (5)| 00:00:01 |
| 81 | TABLE ACCESS CLUSTER | TAB$ | 1 | 6 | 2 (0)| 00:00:01 |
|* 82 | INDEX UNIQUE SCAN | I_OBJ# | 1 | | 1 (0)| 00:00:01 |
| 83 | VIEW | TABSUBPARTV$ | 269K| 19M| 969 (8)| 00:00:04 |
|* 84 | TABLE ACCESS FULL | TABSUBPART$ | 269K| 8681K| 969 (8)| 00:00:04 |
| 85 | TABLE ACCESS FULL | MON_MODS_ALL$ | 1926K| 33M| 1653 (10)| 00:00:06 |
|* 86 | INDEX RANGE SCAN | I_OBJ1 | 1 | 6 | 2 (0)| 00:00:01 |
|* 87 | INDEX UNIQUE SCAN | I_TAB_STATS{1}OBJ# | 1 | 7 | 0 (0)| 00:00:01 |
|* 88 | FILTER | | | | | |
|* 89 | FILTER | | | | | |
|* 90 | HASH JOIN RIGHT OUTER | | 783 | 39933 | 7 (29)| 00:00:01 |
| 91 | TABLE ACCESS FULL | TAB_STATS$ | 770 | 11550 | 3 (0)| 00:00:01 |
|* 92 | HASH JOIN OUTER | | 783 | 28188 | 3 (34)| 00:00:01 |
| 93 | FIXED TABLE FULL | X$KQFTA | 783 | 16443 | 1 (100)| 00:00:01 |
| 94 | TABLE ACCESS FULL | FIXED_OBJ$ | 784 | 11760 | 2 (0)| 00:00:01 |
| 95 | VIEW | SYS_DBA_SEGS | 2837 | 487K| 110K (2)| 00:05:46 |
| 96 | UNION-ALL | | | | | |
| 97 | NESTED LOOPS | | 1840 | 296K| 93690 (2)| 00:04:53 |
|* 98 | HASH JOIN | | 1779 | 272K| 93690 (2)| 00:04:53 |
| 99 | TABLE ACCESS FULL | TS$ | 172 | 1548 | 54 (2)| 00:00:01 |
| 100 | NESTED LOOPS | | 1779 | 257K| 93635 (2)| 00:04:53 |
|*101 | HASH JOIN | | 6571 | 757K| 80450 (3)| 00:04:12 |
|*102 | FILTER | | | | | |
|*103 | HASH JOIN RIGHT OUTER | | 7221 | 423K| 10278 (6)| 00:00:33 |
| 104 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 105 | TABLE ACCESS FULL | OBJ$ | 3854K| 158M| 10133 (5)| 00:00:32 |
| 106 | VIEW | SYS_OBJECTS | 3507K| 194M| 70065 (2)| 00:03:40 |
| 107 | UNION-ALL | | | | | |
|*108 | TABLE ACCESS FULL | TAB$ | 210K| 5548K| 15995 (2)| 00:00:51 |
| 109 | TABLE ACCESS FULL | TABPART$ | 148K| 2895K| 727 (3)| 00:00:03 |
| 110 | TABLE ACCESS FULL | CLU$ | 10 | 150 | 14128 (2)| 00:00:45 |
|*111 | TABLE ACCESS FULL | IND$ | 750K| 16M| 16045 (2)| 00:00:51 |
| 112 | TABLE ACCESS FULL | INDPART$ | 620K| 11M| 2424 (4)| 00:00:08 |
|*113 | TABLE ACCESS FULL | LOB$ | 2273 | 50006 | 15929 (2)| 00:00:50 |
| 114 | TABLE ACCESS FULL | TABSUBPART$ | 269K| 5261K| 932 (4)| 00:00:03 |
| 115 | TABLE ACCESS FULL | INDSUBPART$ | 1503K| 28M| 3868 (5)| 00:00:13 |
| 116 | TABLE ACCESS FULL | LOBFRAG$ | 2977 | 65494 | 17 (0)| 00:00:01 |
|*117 | TABLE ACCESS CLUSTER | SEG$ | 1 | 30 | 2 (0)| 00:00:01 |
|*118 | INDEX UNIQUE SCAN | I_FILE#_BLOCK# | 1 | | 1 (0)| 00:00:01 |
|*119 | INDEX UNIQUE SCAN | I_FILE2 | 1 | 8 | 0 (0)| 00:00:01 |
| 120 | NESTED LOOPS | | 1 | 109 | 2274 (1)| 00:00:08 |
| 121 | NESTED LOOPS | | 1 | 101 | 2274 (1)| 00:00:08 |
|*122 | FILTER | | | | | |
|*123 | HASH JOIN OUTER | | 1 | 92 | 2273 (1)| 00:00:08 |
| 124 | NESTED LOOPS | | 568 | 42600 | 2245 (1)| 00:00:08 |
|*125 | TABLE ACCESS FULL | UNDO$ | 1116 | 45756 | 5 (0)| 00:00:01 |
|*126 | TABLE ACCESS CLUSTER | SEG$ | 1 | 34 | 2 (0)| 00:00:01 |
|*127 | INDEX UNIQUE SCAN | I_FILE#_BLOCK# | 1 | | 1 (0)| 00:00:01 |
| 128 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 129 | TABLE ACCESS CLUSTER | TS$ | 1 | 9 | 1 (0)| 00:00:01 |
|*130 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 |
|*131 | INDEX UNIQUE SCAN | I_FILE2 | 1 | 8 | 0 (0)| 00:00:01 |
|*132 | HASH JOIN | | 996 | 77688 | 14672 (1)| 00:00:46 |
| 133 | TABLE ACCESS FULL | TS$ | 172 | 1548 | 54 (2)| 00:00:01 |
|*134 | FILTER | | | | | |
|*135 | HASH JOIN RIGHT OUTER | | 996 | 68724 | 14618 (1)| 00:00:46 |
| 136 | TABLE ACCESS FULL | USER$ | 3200 | 54400 | 27 (0)| 00:00:01 |
| 137 | NESTED LOOPS | | 531K| 26M| 14574 (1)| 00:00:46 |
| 138 | TABLE ACCESS FULL | FILE$ | 872 | 10464 | 3 (0)| 00:00:01 |
|*139 | TABLE ACCESS CLUSTER | SEG$ | 610 | 24400 | 23 (0)| 00:00:01 |
|*140 | INDEX RANGE SCAN | I_FILE#_BLOCK# | 1 | | 2 (0)| 00:00:01 |
------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
2 - access("SEGMENT_NAME"="TABLE_NAME")
8 - filter("T"."ANALYZETIME" IS NULL OR CASE WHEN "T"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"T"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCENT'
,"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
9 - access("T"."OBJ#"="M"."OBJ#"(+))
14 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
15 - access("O"."OWNER#"="U"."USER#" AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND
"O"."LINKNAME" IS NULL AND "O"."SUBNAME" IS NULL)
filter("O"."SUBNAME" IS NULL AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND
"O"."LINKNAME" IS NULL)
16 - filter(BITAND("T"."PROPERTY",1)=0)
17 - access("O"."OBJ#"="T"."OBJ#")
19 - access("O"."OBJ#"="TS"."OBJ#"(+))
22 - filter("TP"."ANALYZETIME" IS NULL OR CASE WHEN "TP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCENT
',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
23 - access("TP"."OBJ#"="M"."OBJ#"(+))
24 - access("O"."OBJ#"="TP"."OBJ#")
28 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
29 - access("O"."OWNER#"="U"."USER#" AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND
"O"."LINKNAME" IS NULL)
filter("O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
31 - filter("FILE#">0 AND "BLOCK#">0)
34 - access("TP"."BO#"="TAB"."OBJ#")
35 - access("O"."OBJ#"="TS"."OBJ#"(+))
41 - filter("BLOCK#"=0 AND "FILE#"=0)
43 - access("TP"."OBJ#"="M"."OBJ#"(+))
44 - filter("O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
45 - access("O"."OBJ#"="TP"."OBJ#")
46 - filter(("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS') AND ("TP"."ANALYZETIME" IS NULL
OR CASE WHEN "TP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCENT
',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES'))
47 - access("O"."OWNER#"="U"."USER#")
49 - access("TP"."BO#"="TAB"."OBJ#")
52 - filter("TCP"."ANALYZETIME" IS NULL OR CASE WHEN "TCP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TCP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCEN
T',"U"."NAME","O"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
54 - access("O"."OBJ#"="TCP"."OBJ#")
58 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
59 - access("O"."OWNER#"="U"."USER#" AND "O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND
"O"."LINKNAME" IS NULL)
filter("O"."NAMESPACE"=1 AND "O"."REMOTEOWNER" IS NULL AND "O"."LINKNAME" IS NULL)
63 - access("TCP"."OBJ#"="M"."OBJ#"(+))
64 - access("O"."OBJ#"="TS"."OBJ#"(+))
66 - access("TCP"."BO#"="TAB"."OBJ#")
69 - filter("TSP"."ANALYZETIME" IS NULL OR CASE WHEN "TSP"."ANALYZETIME" IS NULL THEN NULL WHEN
("M"."INSERTS"+"M"."DELETES"+"M"."UPDATES">"TSP"."ROWCNT"*TO_NUMBER("DBMS_STATS"."GET_PREFS"('STALE_PERCEN
T',"U"."NAME","PO"."NAME"))/100 OR BITAND("M"."FLAGS",1)=1) THEN 'YES' ELSE 'NO' END ='YES')
70 - access("TSP"."OBJ#"="M"."OBJ#"(+))
71 - access("TCP"."OBJ#"="TSP"."POBJ#")
73 - access("PO"."OBJ#"="TCP"."OBJ#")
77 - access("U"."NAME"='BAS01' OR "U"."NAME"='DATASYNC_1' OR "U"."NAME"='DATASYNC_2' OR
"U"."NAME"='DATASYNC_PRC' OR "U"."NAME"='OSS03' OR "U"."NAME"='OSS_CMS')
78 - access("U"."USER#"="PO"."OWNER#" AND "PO"."NAMESPACE"=1 AND "PO"."REMOTEOWNER" IS NULL AND
"PO"."LINKNAME" IS NULL)
filter("PO"."NAMESPACE"=1 AND "PO"."REMOTEOWNER" IS NULL AND "PO"."LINKNAME" IS NULL)
82 - access("TCP"."BO#"="TAB"."OBJ#")
84 - filter("FILE#">0 AND "BLOCK#">0)
86 - access("SO"."OBJ#"="TSP"."OBJ#")
87 - access("SO"."OBJ#"="TS"."OBJ#"(+))
88 - filter(NULL IS NOT NULL)
89 - filter(DECODE(NVL("FOBJ"."OBJ#",0),0,TO_DATE(NULL),INTERNAL_FUNCTION("ST"."ANALYZETIME")) IS NULL)
90 - access("T"."KQFTAOBJ"="ST"."OBJ#"(+))
92 - access("T"."KQFTAOBJ"="FOBJ"."OBJ#"(+) AND "T"."KQFTAVER"="FOBJ"."TIMESTAMP"(+)-TO_DATE('
1991-01-01 00:00:00', 'syyyy-mm-dd hh24:mi:ss'))
98 - access("S"."TS#"="TS"."TS#")
101 - access("O"."OBJ#"="SO"."OBJECT_ID" AND "O"."TYPE#"="SO"."OBJECT_TYPE_ID")
102 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR NVL("U"."NAME",'SYS')='DATASYNC_2'
OR NVL("U"."NAME",'SYS')='OSS_CMS')
103 - access("O"."OWNER#"="U"."USER#"(+))
108 - filter(BITAND("T"."PROPERTY",1024)=0)
111 - filter("I"."TYPE#"=1 OR "I"."TYPE#"=2 OR "I"."TYPE#"=3 OR "I"."TYPE#"=4 OR "I"."TYPE#"=6 OR
"I"."TYPE#"=7 OR "I"."TYPE#"=8 OR "I"."TYPE#"=9)
113 - filter(BITAND("L"."PROPERTY",64)=0 OR BITAND("L"."PROPERTY",128)=128)
117 - filter("S"."TYPE#"="SO"."SEGMENT_TYPE_ID")
118 - access("S"."TS#"="SO"."TS_NUMBER" AND "S"."FILE#"="SO"."HEADER_FILE" AND
"S"."BLOCK#"="SO"."HEADER_BLOCK")
119 - access("S"."TS#"="F"."TS#" AND "S"."FILE#"="F"."RELFILE#")
122 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR NVL("U"."NAME",'SYS')='DATASYNC_2'
OR NVL("U"."NAME",'SYS')='OSS_CMS')
123 - access("S"."USER#"="U"."USER#"(+))
125 - filter("UN"."STATUS{1}quot;<>1)
126 - filter("S"."TYPE#"=1 OR "S"."TYPE#"=10)
127 - access("S"."TS#"="UN"."TS#" AND "S"."FILE#"="UN"."FILE#" AND "S"."BLOCK#"="UN"."BLOCK#")
130 - access("S"."TS#"="TS"."TS#")
131 - access("UN"."TS#"="F"."TS#" AND "UN"."FILE#"="F"."RELFILE#")
132 - access("S"."TS#"="TS"."TS#")
134 - filter(NVL("U"."NAME",'SYS')='DATASYNC_PRC' OR NVL("U"."NAME",'SYS')='OSS03' OR
NVL("U"."NAME",'SYS')='BAS01' OR NVL("U"."NAME",'SYS')='DATASYNC_1' OR NVL("U"."NAME",'SYS')='DATASYNC_2'
OR NVL("U"."NAME",'SYS')='OSS_CMS')
135 - access("S"."USER#"="U"."USER#"(+))
139 - filter("S"."TYPE#"<>6 AND "S"."TYPE#"<>5 AND "S"."TYPE#"<>8 AND "S"."TYPE#"<>10 AND "S"."TYPE#"<>1)
140 - access("S"."TS#"="F"."TS#" AND "S"."FILE#"="F"."RELFILE#")
251 。이번 SQL 은 1 초 정도 에 결 과 를 낼 수 있 습 니 다. 논리 독 서 는 7 천 여 W 에서 8W 이상으로 낮 아 졌 습 니 다. 제 가 왜 이 HINT 를 넣 었 는 지 는 말 하지 않 겠 습 니 다. 제 블 로 그 를 자주 보 시 는 분 들 은 아 실 겁 니 다.
때로는 데이터 사전 에 단독으로 접근 하 는 것 이 빠 르 지만, 너무 많은 데이터 사전 과 관련 이 있 으 면 성능 이 급 격 히 떨어진다. 이 럴 때 는 두려워 하지 말고 우리 일반인 이 쓴 SQL 처럼 대해 라.
많은 사람들 이 데이터 사전 에/* + rule */를 추가 하 는 것 에 대해 나 는 매우 찬성 하지 않 는 다 고 말한다.
또한 이 스 크 립 트 에 관 한 DBA 작업 --- 통계 정보의 정확성 확보http://blog.csdn.net/robinson1988/article/details/6321537
한 구역 만 수집 하 는 것 이 아니 라 모든 구역 의 통계 정 보 를 수집 합 니 다.
그 러 니까 형 들 이 제 SQL 을 참고 하려 면 직접 고 쳐 주세요.
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