Oacle 바 인 딩 변 수 는 색인 을 가지 않 습 니 다.
6362 단어 oracle_sqltuning
팀장 님 이 해결 하 세 요.나 는 직렬 을 최적화 했다.실행 계획 을 봤 으 니까 틀 리 지 않 았 어 요.
결 과 는 바 인 딩 변수 가 색인 을 가지 않 습 니 다.
SQL> explain plan for select /*+ first_rows(100) */
PHONE,
IMSI,
RPHONE,
RIMSI,
CALLEDNUM,
TMSI,
IMEI,
SUBEVTTYPE,
RESULT,
ERRORCODE,
RELEASERCODE,
ERRORPHASEIND,
FAILUREMSG,
FAILUREPREMSG,
RANTYPE,
VCITY,
MSC,
MGWIP,
BSC,
LAI,
CGI,
ENDCGI,
TALKLEN,
CI 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 C,
DELAY_PAGINGRES,
DELAY_SETUP,
DELAY_ASSIGNREQ,
DELAY_ASSIGNCMP,
DELAY_ALERTING,
RRANTYPE,
MSC_GT,
MSCIP,
SCP,
SCP_GT,
RDIRECTION,
COMBFLAG,
HCOUNTRY,
HPROVINCE,
HCITY,
ROAMTYPE,
HOPERATOR,
SPECFLAG,
CFTYPE,
MSRN,
RPREFIX,
ROPERATOR,
OCALLED,
AUTHTIMES,
AUTHRESULT_1ST,
AUTHEROORCODE_1ST,
AUCVECCOUNT,
ENCRYALGORITHM,
IDENTITYTYPE,
CALLDROPFLAG,
VIDEOBACKCAUSE,
PAGINGTIMES,
GLOBALFLAG,
RELDIRECTION,
HODURATION,
HOTIMES,
TDRID,
CALLID,
DELAY_AUTHREQ_1ST,
DELAY_AUTHREQ_2ND,
DELAY_AUTHRES,
DELAY_AUCVECREQ,
DELAY_AUCVECRES,
DELAY_CIPCMD,
DELAY_CIPCMP,
DELAY_TMSICMD,
DELAY_TMSICMP,
DELAY_IDREQ,
DELAY_IDRES,
DELAY_CMREQ,
DELAY_CMRES,
DELAY_PAGINGREQ_1ST,
DELAY_PAGINGREQ_2ND,
DELAY_PAGINGREQ_3RD,
DELAY_PAGINGREQ_MORE,
DELAY_PAGING_NET,
DELAY_CALLPROC,
DELAY_IDP,
DELAY_CONNECT_CAP,
DELAY_RELEASE_CAP,
DELAY_SRI,
DELAY_SRIRES,
DELAY_PRN,
DELAY_PRNRES,
DELAY_IAM,
DELAY_ACM,
DELAY_ANM,
DAY_RLC,
DELAY_RELEASE,
DELAY_RELEASECMP,
DELAY_CLEARREQ,
DELAY_CLEARCMD,
DELAY_CLEARCMP,
USERARD,
USERTYPE,
IMEIRANTYPE,
to_char(STARTTIME, 'YYYY-MM-DD HH24:MI:SS.FF') StartTime,
to_char(EndTime, 'YYYY-MM-DD HH24:MI:SS.FF') EndTime,
NVL((SELECT /*+index(C ind_MV_TERMINAL_tacid)*/
TERMINALNAME
FROM MV_TERMINAL C
WHERE ROWNUM = 1
AND C.TACID = SUBSTR(IMEI, 0, 8)),
SUBSTR(IMEI, 0, 8)) TAC,
FLOOR(CIC / (32)) PCM
from v_CS_CallLog_Acess dt
where 1 = 1
and dt.endt 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 ime >=:1
and dt.endtime< :2
and dt.phone=:3118 119 ;
Explained.
SQL> select * from table(dbms_xplan.display);
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Plan hash value: 2061439993
-----------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Pstart| Pstop |
-----------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 364K| 475M| 109K (1)| 00:32:50 | | |
|* 1 | COUNT STOPKEY | | | | | | | |
| 2 | MAT_VIEW ACCESS BY INDEX ROWID| MV_TERMINAL | 1381 | 284K| 2 (0)| 00:00:01 | | |
|* 3 | INDEX RANGE SCAN | IND_MV_TERMINAL_TACID | 553 | | 1 (0)| 00:00:01 | | |
| 4 | VIEW | V_CS_CALLLOG_ACESS | 364K| 475M| 109K (1)| 00:32:50 | | |
| 5 | UNION-ALL | | | | | | | |
|* 6 | FILTER | | | | | | | |
| 7 | PARTITION HASH SINGLE | | 101 | 25250 | 43340 (1)| 00:13:01 | KEY | KEY |
|* 8 | TABLE ACCESS FULL | CS_CALLLOG_ACESS_18050316 | 101 | 25250 | 43340 (1)| 00:13:01 | KEY | KEY |
|* 9 | FILTER | | | | | | | |
| 10 | PARTITION HASH SINGLE | | 101 | 25250 | 43340 (1)| 00:13:01 | KEY | KEY |
|* 11 | TABLE ACCESS FULL | CS_CALLLOG_ACESS_18050317 | 101 | 25250 | 43340 (1)| 00:13:01 | KEY | KEY |
|* 12 | FILTER | | | | | | | |
| 13 | PARTITION RANGE ITERATOR | | 363K| 475M| 22727 (3)| 00:06:50 | KEY | KEY |
|* 14 | TABLE ACCESS FULL | CS_CALLLOG_ACESS | 363K| 475M| 22727 (3)| 00:06:50 | KEY | KEY |
-----------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
1 - filter(ROWNUM=1)
3 - access("C"."TACID"=SUBSTR(:B1,0,8))
6 - filter(TO_TIMESTAMP(:1)TO_TIMESTAMP(:1) AND
TIMESTAMP' 2018-05-03 16:00:00.000000000'=GREATEST(TIMESTAMP' 2018-05-03 16:00:00.000000000',TO_TIMESTAMP(:1)) AND
"ENDTIME"TO_TIMESTAMP(:1) AND
TIMESTAMP' 2018-05-03 17:00:00.000000000'=GREATEST(TIMESTAMP' 2018-05-03 17:00:00.000000000',TO_TIMESTAMP(:1)) AND
"ENDTIME"=TO_TIMESTAMP(:1) AND "ENDTIME" 번호 조회 가 색인 으로 가지 않 으 니 확실히 문제 가 심각 하 다.왜냐하면 나 는 plsql 분석 을 할 때 귀속 변 수 를 교체 하고 분 석 했 기 때문이다.
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