Oracle的EXP与IMP常用整理
关于oracle数据的导出与导入,是在工作中经常用到,尤其是数据库备份。exp与imp的用法收集网络,还是那句话,ldquo;出来混的,总
关于Oracle数据的导出与导入,是在工作中经常用到,尤其是数据库备份。
exp与imp的用法收集网络,还是那句话,“出来混的,总是要还的” 。
一.定义
oracle 的exp/imp命令用于实现对数据库的导出/导入操作;
exp命令用于把数据从远程数据库服务器导出至本地,生成dmp文件;
imp命令用于把本地的数据库dmp文件从本地导入到远程的Oracle数据库中。
二.语法格式
格式:
导出
> exp userid/password@instance file='path' log='log.log' 参数
导入
> imp userid/password@instance file='path' log='log.log' 参数
CMd命令行输入 imp help=y 或 exp help=y 获取imp或exp的语法参数信息:
USERID 用户名/口令
FULL 导入整个文件 (N)
BUFFER 数据缓冲区大小
FROMUSER 所有人用户名列表
FILE 输入文件 (EXPDAT.DMP)
TOUSER 用户名列表
SHOW 只列出文件内容 (N)
TABLES 表名列表
IGNORE 忽略创建错误 (N)
RECORDLENGTH IO 记录的长度
GRANTS 导入权限 (Y)
INCTYPE 增量导入类型
INDEXES 导入索引 (Y)
COMMIT 提交数组插入 (N)
ROWS 导入数据行 (Y)
PARFILE 参数文件名
LOG 屏幕输出的日志文件
CONSTRAINTS 导入限制 (Y)
DESTROY 覆盖表空间数据文件 (N)
INDEXFILE 将表/索引信息写入指定的文件
SKIP_UNUSABLE_INDEXES 跳过不可用索引的维护 (N)
FEEDBACK 每 x 行显示进度 (0)
TOID_NOVALIDATE 跳过指定类型 ID 的验证
FILESIZE 每个转储文件的最大大小
STATISTICS 始终导入预计算的统计信息
RESUMABLE 遇到与空格有关的错误时挂起 (N)
RESUMABLE_NAME 用来标识可恢复语句的文本字符串
RESUMABLE_TIMEOUT RESUMABLE 的等待时间
COMPILE 编译过程, 程序包和函数 (Y)
1) 数据导出:
1 将数据库SampleDB完全导出,用户名system 密码manager 导出到E:/SampleDB.dmp中
exp system/manager@TestDB file=E:/sampleDB.dmp log=E:/sample.log full=y
2 将数据库中system用户与sys用户的表导出
exp system/manager@TestDB file=E:/sampleDB.dmp log=E:/sample.log owner=(system,sys)
3 将数据库中的表 TableA,TableB 导出
exp system/manager@TestDB file=E:/sampleDB.dmp log=E:/sample.log tables=(TableA,TableB)
4 将数据库中的表tableA中的字段filed1 值为 "王五" 的数据导出
exp system/manager@TestDB file=E:/sampleDB.dmp log=E:/sample.log tables=(tableA) query=' where filed1='王五'
如果想对dmp文件进行压缩,可以在上面命令后面 加上 compress=y 来实现。
如果想只导出数据库对象的结构,参数加rows=no 获得,全部对象 full=y,忽略各种错误 ignore=y
2) 数据的导入
1 将备份数据库文件中的数据导入指定的数据库SampleDB 中,如果 SampleDB 已存在该表,则不再导入;
imp system/manager@TEST file=E:/sampleDB.dmp log=E:/sample.log full=y ignore=y
2 将d:/daochu.dmp中的表table1 导入
imp system/manager@TEST file=E:/sampleDB.dmp log=E:/sample.log tables=(table1)
3. 导入一个完整数据库
imp system/manager file=bible_db log=dible_db full=y ignore=y
4. 导入一个或一组指定用户所属的全部表、索引和其他对象
imp system/manager file=E:/sampleDB.dmp log=E:/sample.log fromuser=seapark
imp system/manager file=E:/sampleDB.dmp log=E:/sample.log fromuser=(seapark,amy,amyc,harold)
5. 将一个用户所属的数据导入另一个用户
imp system/manager file=E:/sampleDB.dmp log=E:/sample.log fromuser=seapark touser=seapark_copy
imp system/manager file=E:/sampleDB.dmp log=E:/sample.log fromuser=(seapark,amy)
touser=(seapark1, amy1)
6. 导入一个表
imp system/manager file=E:/sampleDB.dmp log=E:/sample.log fromuser=seapark TABLES=(a,b)
7. 从多个文件导入
imp system/manager file=(paycheck_1,paycheck_2,paycheck_3,paycheck_4)
log=paycheck, filesize=1G full=y
8. 使用参数文件
imp system/manager parfile=bible_tables.par
bible_tables.par参数文件:
#Import the sample tables used for the Oracle8i Database Administrator's
Bible. fromuser=seapark touser=seapark_copy file=seapark log=seapark_import
9. 增量导入
imp system./manager inctype= RECTORE FULL=Y FILE=A

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]
