tacustomer有200萬左右的記錄數，記錄長度上限(各個字段最大長度之和，如VARCHAR2(100)視作最長100個字節)約800個字節。taaccoinfo表約200萬，記錄長度上限為788個字節。兩個表以customerid為關聯字段，一個customer對應多個taaccoinfo.taaccountid(基本是1對1或1對2關系)。兩表連接，若各自表上沒有選擇過濾條件，則執行時分別Table Full Scan。不知簇表能否提高性能(同事說簇表更新效率很低)。做了實驗，結果在簇表數據插入上無法通過。

CREATE CLUSTER cust_fundacco (CUSTOMERID NUMBER(10,0))

TABLESPACE ts_ta;

CREATE TABLE "TA"."LCM_TACUSTOMER"

(?"CUSTOMERID" NUMBER(10,0) NOT NULL ENABLE,

"LATENTCUSTOMERID" NUMBER(10,0),

"LOGINNAME" VARCHAR2(20),

"WEBPWD" VARCHAR2(50),

"SERVICEPWD" VARCHAR2(50),

"CUSTOMERLEVELSIGN" CHAR(1),

"CUSTOMERINTEGRAL" NUMBER(10,0),

"CUSTOMERTYPESIGN" CHAR(1),

"CUSTOMERATTRSIGN" CHAR(5),

"BILLSIGN" CHAR(1),

"WEBREGISTERDATE" DATE,

"CUSTOMERNAME" VARCHAR2(60),

"SHORTNAME" VARCHAR2(20),

"CERTIFICATETYPE" CHAR(1),

"CERTIFICATENO" VARCHAR2(30),

"SEX" CHAR(1),

"BIRTHDAY" VARCHAR2(8),

"VOCATION" CHAR(2),

"EDUCATION" CHAR(2),

"ANNUALINCOME" VARCHAR2(8),

"NATIONALITY" CHAR(3),

"MOBILETELNO" VARCHAR2(24),

"CORPTEL" VARCHAR2(22),

"TELNO" VARCHAR2(22),

"FAXNO" VARCHAR2(24),

"EMAILADDRESS" VARCHAR2(40),

"CORPNAME" VARCHAR2(40),

"CITYNO" VARCHAR2(10),

"ADDRESS" VARCHAR2(100),

"POSTCODE" CHAR(6),

"LASTUPDATEDATE" DATE,

"LASTUPDATEWAY" CHAR(1),

"BILLPERSON" VARCHAR2(60),

"BILLADDRESS" VARCHAR2(100),

"BILLPOSTCODE" CHAR(6),

"SIGNOFVALIDADDRESS" CHAR(1)

--,CONSTRAINT "PK_LCM_TACUSTOMER" PRIMARY KEY ("CUSTOMERID")

) CLUSTER cust_fundacco (CUSTOMERID)

;

CREATE TABLE "TA"."LCM_TAACCOINFO"

(?"TAACCOUNTID" VARCHAR2(12) NOT NULL ENABLE,

"TAACCOUNTTYPE" VARCHAR2(2),

"INDIVIDUALORINSTITUTION" CHAR(1),

"CERTIFICATETYPE" CHAR(1),

"CERTIFICATENO" VARCHAR2(30),

"DISTRIBUTORCODE" VARCHAR2(3),

"REGIONCODE" VARCHAR2(10),

"BRANCHCODE" VARCHAR2(9),

"INVESTORNAME" VARCHAR2(60),

"SHORTNAME" VARCHAR2(12),

"NATIONALITY" CHAR(3),

"INSTREPRNAME" VARCHAR2(20),

"TRANSACTORNAME" VARCHAR2(20),

"TRANSACTORCERTTYPE" CHAR(1),

"TRANSACTORCERTNO" VARCHAR2(18),

"ADDRESS" VARCHAR2(60),

"POSTCODE" VARCHAR2(6),

"TELNO" VARCHAR2(22),

"FAXNO" VARCHAR2(24),

"EMAILADDRESS" VARCHAR2(40),

"MOBILETELNO" VARCHAR2(24),

"BPNO" VARCHAR2(20),

"INVESTORSBIRTHDAY" VARCHAR2(8),

"SEX" CHAR(1),

"EDUCATIONLEVEL" CHAR(2),

"FAMILYSCALE" NUMBER(*,0),

"VOCATIONCODE" VARCHAR2(2),

"ANNUALINCOME" VARCHAR2(8),

"CALLCENTER" CHAR(1),

"INTERNET" CHAR(1),

"SELFHELP" CHAR(1),

"DELIVERTYPE" CHAR(1),

"CONFIRMMAILTYPE" CHAR(1),

"FREEZINGDEADLINE" VARCHAR2(8),

"FROZENCAUSE" CHAR(1),

"BANKACCTNAME" VARCHAR2(60),

"BANKACCTNO" VARCHAR2(28),

"BANKCODE" VARCHAR2(9),

"ACCOUNTINITDATE" DATE,

"ACCOUNTLASTUPDATEDATE" DATE,

"ACCOUNTSTATUS" VARCHAR2(2),

"FIRSTINVESTDATE" DATE,

"ANNELTRANSTIMES" NUMBER(*,0),

"BROKER" VARCHAR2(12),

"MEMO" VARCHAR2(48),

"CORPTEL" VARCHAR2(22),

"CORPNAME" VARCHAR2(40),

"SPECIALCODE" VARCHAR2(20),

"ACTCODE" VARCHAR2(3),

"SERVICEINITPWD" VARCHAR2(40),

"INPUTTATYPE" CHAR(1),

"INPUTFILEDATE" CHAR(8),

"CUSTOMERID" NUMBER(10,0),

"C_PROVINCE" VARCHAR2(20)

--,CONSTRAINT "PK_LCM_TAACCOINFO" PRIMARY KEY ("TAACCOUNTID")

) CLUSTER cust_fundacco (CUSTOMERID);

CREATE INDEX cust_fundacco_index

ON CLUSTER cust_fundacco

TABLESPACE ts_ta

;

alter table LCM_TACUSTOMER nologging;

alter table LCM_TAACCOINFO nologging;

INSERT /*+ append */ INTO LCM_TACUSTOMER

SELECT * FROM tacustomer;

INSERT /*+ append */ INTO LCM_TAACCOINFO SELECT * FROM taaccoinfo;

總結

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