ORA – 00202 Oracle Problem with Control File


ORA-00202: controlfile: ‘C:\ORACLE\ORADATA\ORACLE91\CONTROL02.CTL’

ORA-27091: skgfqio: unable to queue I/O

ORA-27070: skgfdisp: async read/write failed

OSD-04006: ReadFile() failure, unable to read from file

O/S-Error: (OS 23) Data error (cyclic redundancy check).

i find this problem on one of my server database. this problem will make oracle fail to mount and open. if you try to connect via sqlplus, you will get error message : Oracle is on initialization startup/shutdown. so you can not enter the database.

below is the step that i do, to resolve the problem.(oracle ver 9i and higher)

1. connect to database using sqlplus with SYS as SYSDBA

2. shutdown immediate the database.

3. create a backup copy of all control file(usually consist of 3 control file with extension CTL) on folder ORADATA\

4. rename CONTROL02.CTL (corrupt control file) to CONTROL02.bak

5. rename one of working control file to become CONTROL02.CTL and then copy this file to folder ORADATA\

6.then startup the database via sqlplus using SYS as SYSDBA

this step only working if one of controlfile is corrupt and need to be replace. and also your controlfile is multiplex. Make sure that the error message is exactly the same with what is written above.

 

Gửi phản hồi

Please log in using one of these methods to post your comment:

WordPress.com Logo

Bạn đang bình luận bằng tài khoản WordPress.com Log Out / Thay đổi )

Twitter picture

Bạn đang bình luận bằng tài khoản Twitter Log Out / Thay đổi )

Facebook photo

Bạn đang bình luận bằng tài khoản Facebook Log Out / Thay đổi )

Google+ photo

Bạn đang bình luận bằng tài khoản Google+ Log Out / Thay đổi )

Connecting to %s