How to extract multiple tar ball (*.tar.gz) files in directory on Linux or Unix

I have tried tar -xvf *.tar.gz command, but getting an error that read as:
tar (child): *.gz: Cannot open: No such file or directory
tar (child): Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error is not recoverable: exiting now
How can I extract multiple *.tar.gz files in directory using Linux or Unix-shell prompt?