CREATE [PUBLIC] DATABASE LINK link CONNECT TO username IDENTIFIED BY password USING 'connectstring'
1.2 Oracle To Mysql
在oracle配置mysql数据库的dblink
# 创建外部表需要的目录 SQL> create or replace directory DUMP_DIR as '/data/ora_ext_lottu'; Directory created. # 给用户授予指定目录的操作权限 SQL> GRANT READ,WRITE ON DIRECTORY DUMP_DIR TO lottu;Grant succeeded.
2.2 外部表源文件lottu.txt
10,ACCOUNTING,NEW YORK 20,RESEARCH,DALLAS 30,SALES,CHICAGO 40,OPERATIONS,BOSTON
2.3 创建外部表
drop table dept_external purge;CREATE TABLE dept_external (deptno NUMBER(6),dname VARCHAR2(20),loc VARCHAR2(25) ) ORGANIZATION EXTERNAL (TYPE oracle_loaderDEFAULT DIRECTORY DUMP_DIRACCESS PARAMETERS(RECORDS DELIMITED BY newlineBADFILE 'lottu.bad'LOGFILE 'lottu.log'FIELDS TERMINATED BY "," OPTIONALLY ENCLOSED BY '"'(deptno INTEGER EXTERNAL(6),dname CHAR(20),loc CHAR(25)))LOCATION ('lottu.txt') ) REJECT LIMIT UNLIMITED;
查看数据
SQL> select * from dept_external;DEPTNO DNAME LOC ---------- -------------------- -------------------------10 ACCOUNTING NEW YORK20 RESEARCH DALLAS30 SALES CHICAGO40 OPERATIONS BOSTON
[oracle@oracle235 ~]$ seq 1000|awk -vOFS="," '{print $1,"lottu",systime()-$1}' > lottu.txt [oracle@oracle235 ~]$ sqlplus lottu/li0924SQL*Plus: Release 11.2.0.4.0 Production on Mon Aug 13 22:58:34 2018Copyright (c) 1982, 2013, Oracle. All rights reserved.Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing optionsSQL> create table tbl_load_01 (id number,name varchar2(10),accountid number);Table created.
3.2 创建控制文件lottu.ctl
load data characterset utf8infile '/home/oracle/lottu.txt'truncate into table tbl_load_01fields terminated by ','trailing nullcolsoptionally enclosed by ' ' TRAILING NULLCOLS (id ,name,accountid )
3.3 执行sqlldr
[oracle@oracle235 ~]$ sqlldr 'lottu/"li0924"' control=/home/oracle/lottu.ctl log=/home/oracle/lottu.log bad=/home/oracle/lottu.badSQL*Loader: Release 11.2.0.4.0 - Production on Mon Aug 13 23:10:12 2018Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.Commit point reached - logical record count 64 Commit point reached - logical record count 128 Commit point reached - logical record count 192 Commit point reached - logical record count 256 Commit point reached - logical record count 320 Commit point reached - logical record count 384 Commit point reached - logical record count 448 Commit point reached - logical record count 512 Commit point reached - logical record count 576 Commit point reached - logical record count 640 Commit point reached - logical record count 704 Commit point reached - logical record count 768 Commit point reached - logical record count 832 Commit point reached - logical record count 896 Commit point reached - logical record count 960 Commit point reached - logical record count 1000
[oracle@oracle235 ~]$ unzip sqluldr2linux64.zip Archive: sqluldr2linux64.zipinflating: sqluldr2linux64.bin [oracle@oracle235 ~]$ mv sqluldr2linux64.bin $ORACLE_HOME/bin/sqludr
4.2 查看sqludr帮助
[oracle@oracle235 ~]$ sqludr -?SQL*UnLoader: Fast Oracle Text Unloader (GZIP, Parallel), Release 4.0.1 (@) Copyright Lou Fangxin (AnySQL.net) 2004 - 2010, all rights reserved.License: Free for non-commercial useage, else 100 USD per server.Usage: SQLULDR2 keyword=value [,keyword=value,...]Valid Keywords:user = username/password@tnsnamesql = SQL file namequery = select statementfield = separator string between fieldsrecord = separator string between recordsrows = print progress for every given rows (default, 1000000) file = output file name(default: uldrdata.txt)log = log file name, prefix with + to append modefast = auto tuning the session level parameters(YES)text = output type (MYSQL, CSV, MYSQLINS, ORACLEINS, FORM, SEARCH).charset = character set name of the target database.ncharset= national character set name of the target database.parfile = read command option from parameter file for field and record, you can use '0x' to specify hex character code,\r=0x0d \n=0x0a |=0x7c ,=0x2c, \t=0x09, :=0x3a, #=0x23, "=0x22 '=0x27
4.3 执行sqludr
[oracle@oracle235 ~]$ sqludr lottu/li0924 query="tbl_load_01" file=lottu01.txt field=","0 rows exported at 2018-08-13 23:47:55, size 0 MB.1000 rows exported at 2018-08-13 23:47:55, size 0 MB.output file lottu01.txt closed at 1000 rows, size 0 MB.
 实现一个简版的html+redux.js的demo)
