Is data warehouse monitoring same as database monitoring?
"On what parameters can we monitor data warehouse?".


Exactly the same ones that you use for monitoring an OLTP database. You might want to pay more attention to things like slow query log (MySQL) for a DW, but that should be on the radar for an OLTP system also. 

The common "gotchas" may change, but databases all sit on machines with disk, RAM, CPU and network connections. Bottlenecks can and do occur with any/all of these depending on your hardware (notably RAID - most database apps tend to be I/O bound), your application (and its configuration) and your network bandwidth.