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when i start my hot backup my database getting very slow

Vicky C Newbie
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Hi,
I am using following commands for enabling hot backup

SQL>ALTER SYSTEM ARCHIVE LOG CURRENT;
SQL>ARCHIVE LOG LIST;
SQL >ALTER DABATBASE BEGIN BACKUP;
Database altered.
SQL>SELECT FILE#,STATUS FROM V$BACKUP;
FILE# STATUS
---------- ------------------
1 ACTIVE
2 ACTIVE
3 ACTIVE
4 ACTIVE

and using cp -rp command to copy the file (backup copying speed good) but database performance very slow

How to improve performance ...

Regards
Vignesh C
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