DB backup job for DB maintenance plan failed

I have few doubts as below state:
1) What's the cause for DB backup job for DB maintenance plan failed?
2) What's the measure to correct this problem?
Thanks in advance.
MS KhorKhor,
What's in the:
1) SQL Server error log
2) SQL Agent error log
3) Windows Event log
Right click the maintenance plan, select History, and double click any
errors you see there. What do they say? Paste the text to this group.
--
Mark Allison, SQL Server MVP
http://www.markallison.co.uk
Looking for a SQL Server replication book?
http://www.nwsu.com/0974973602.html
Khor wrote:
> I have few doubts as below state:
> 1) What's the cause for DB backup job for DB maintenance plan failed?
> 2) What's the measure to correct this problem?
> Thanks in advance.
> MS Khorsql