Oracle exp and IMP

1. Export the database test completely, and the username System Password Manager is exported to D: \ daochu. dmp.

Exp system/manager @ test file = D: \ daochu. dmp full = y

2. Export the tables of system users and SYS users in the database

Exp system/manager @ test file = D: \ daochu. dmp owner = (system, sys)

3. Export tables Table1 and Table2 in the database

Exp system/manager @ test file = D: \ daochu. dmp tables = (Table1, table2)

4. Export the data with the field filed1 in table 1 in the database starting with "00"

Exp system/manager @ test file = D: \ daochu. dmp tables = (Table1) query = \ "where filed1 like '201312 '\"

The above is a commonly used export. I am not very concerned about compression. I can use WinZip to compress the DMP file.

However, add compress = Y to the command above.

Import data 1: import data from D: \ daochu. dmp to the test database.

IMP system/manager @ test file = D: \ daochu. dmp

The above may be a problem, because some tables already exist, and then it will report an error, the table will not be imported.

Add ignore = Y to the end.

2. Import table 1 in D: \ daochu. dmp

IMP system/manager @ test file = D: \ daochu. dmp tables = (Table1)

The preceding import and export operations are sufficient. In many cases, I completely delete the table and then import it.

Note:

If you have sufficient permissions, the system will prompt you.

Databases can be connected. You can use tnsping test to obtain whether the database test can be connected.

How can exp not export a table!

Exp nxgtzyj/oranxgtzyj @ local_southgis tables = (select table_name from user_tables) query = \ "where table_name <> 'DW _ datumadjunct '\"