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This article mainly explains "how to reinstall Oracle database", the content of the explanation is simple and clear, easy to learn and understand, now please follow the editor's ideas slowly in depth, together to study and learn "how to reinstall Oracle database" bar!

Reinstall oracle under win system

1. Disable oracle service

Enter computer management. In Services, find all the services at the beginning of oracle, and right-click to select stop.

2. Uninstall the software

In the start menu, find Universal Installer, run Oracle Universal Installer, and click to uninstall the product

B. In the product list window, click all to expand, check other items except OraDb11g_home1, and click Delete

3. Delete the registry

A, press the Windows logo key and R key, open the running window, type regedit, open the registry, expand HKEY_LOCAL_MACHINE\ SOFTWARE, find oracle, and delete it.

B. Expand HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services, and delete all items at the beginning of oracle

C. Expand HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\ Eventlog\ Application, and delete all items at the beginning of oracle

D. In HKEY_CLASSES_ROOT, delete the entry that begins with ora

E. Delete the registry https://blog.51cto.com/hnyuanzijian/2342414 in batches (if you failed to install the database once and did not reinstall the registry a second time, it is recommended to delete the registry in batches. If you reinstall it many times, it is recommended to find and delete the registry yourself)

4. Restart the computer and delete the oracle directory

A. Delete the installation directory app of Oracle

B, D:\ app

C, C:\ Program Files\ Oracle

5. Just reinstall oracle.

Reinstall Oracle database under linux

1 、

A. Stop the database: shutdown immediate

B. Stop listening: lsnrct stop

2. Delete the contents of database files

Delete all the contents under the directory / u01/app/oracle/product/12.2.0.1/db_1/

B. Delete all contents of the directory / u01/app/oracle/ except product, including:

Admin audit cfgtoollogs checkpoints diag oradata

C. Delete directory / u01/app/oraInventory

3. Delete other directory contents of the Linux system

Delete everything under the directory / usr/local/bin/, including

Coraenv dbhome oraenv

B. Delete directory / opt/ ORCLfmap

4. Just rerun the installation

Thank you for your reading, the above is the content of "how to reinstall the Oracle database", after the study of this article, I believe you have a deeper understanding of how to reinstall the Oracle database, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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