在日常工作中；經常會遇到這樣的需求： Oracle 數據表跟文本或者文件格式進行交互；即將指定文件內容導入對應的 Oracle 數據表中；或者從 Oracle 數據表導出。 其他資料庫中的表跟Oracle資料庫進行交互。 Oracle 數據表跟文本或者文件格式進行交互；即將指定文件內容導入對應的 O ...
CREATE [PUBLIC] DATABASE LINK link CONNECT TO username IDENTIFIED BY password USING 'connectstring'
1.2 Oracle To Mysql
# 創建外部表需要的目錄 SQL> create or replace directory DUMP_DIR as '/data/ora_ext_lottu'; Directory created. # 給用戶授予指定目錄的操作許可權 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 創建外部表
drop table dept_external purge; CREATE TABLE dept_external ( deptno NUMBER(6), dname VARCHAR2(20), loc VARCHAR2(25) ) ORGANIZATION EXTERNAL (TYPE oracle_loader DEFAULT DIRECTORY DUMP_DIR ACCESS PARAMETERS ( RECORDS DELIMITED BY newline BADFILE '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;
查看數據
SQL> select * from dept_external; DEPTNO DNAME LOC ---------- -------------------- ------------------------- 10 ACCOUNTING NEW YORK 20 RESEARCH DALLAS 30 SALES CHICAGO 40 OPERATIONS BOSTON
[oracle@oracle235 ~]$ seq 1000|awk -vOFS="," '{print $1,"lottu",systime()-$1}' > lottu.txt [oracle@oracle235 ~]$ sqlplus lottu/li0924 SQL*Plus: Release 11.2.0.4.0 Production on Mon Aug 13 22:58:34 2018 Copyright (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 options SQL> create table tbl_load_01 (id number,name varchar2(10),accountid number); Table created.
3.2 創建控制文件lottu.ctl
load data characterset utf8 infile '/home/oracle/lottu.txt' truncate into table tbl_load_01 fields terminated by ',' trailing nullcols optionally enclosed by ' ' TRAILING NULLCOLS ( id , name, accountid )
3.3 執行sqlldr
[oracle@oracle235 ~]$ sqlldr 'lottu/"li0924"' control=/home/oracle/lottu.ctl log=/home/oracle/lottu.log bad=/home/oracle/lottu.bad SQL*Loader: Release 11.2.0.4.0 - Production on Mon Aug 13 23:10:12 2018 Copyright (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.zip inflating: sqluldr2linux64.bin [oracle@oracle235 ~]$ mv sqluldr2linux64.bin $ORACLE_HOME/bin/sqludr
4.2 查看sqludr幫助
[oracle@oracle235 ~]$ 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@tnsname sql = SQL file name query = select statement field = separator string between fields record = separator string between records rows = print progress for every given rows (default, 1000000) file = output file name(default: uldrdata.txt) log = log file name, prefix with + to append mode fast = 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 執行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.
