Getting Error While importing apex application

Hi,

I would like to know that, Any size restriction to import apex application f133.sql file.

We have 2 backup size, One of 1.7GB and another on is 4.1 GB.

When we import backup 1.6 GB, It's has successfully Imported. But When we Import 4.1 GB backup we are getting error find below.

"The connection was reset.

Try:

• Checking the connection
• Checking the proxy and the firewall
• Running Windows Network Diagnostics

ERR_CONNECTION_RESET

Hide details"

Kindly help me, What is the region to failed large size backup.

Thanks

Shashi