Novell Inc. reported net income of $38.4 million or 52 cents per share for the second fiscal quarter ended April 27, up 87 percent from the $20.5 million or 30 cents per share posted for the same period a year ago.

Net revenue of $150.2 million for the quarter was up 25 percent from $120 million for the same three months in fiscal 1990.For the first six months of fiscal 1991, net income increased 94 percent to $68.9 million or 94 cents per share, up from $35.6 million or 52 cents per share in the previous year. Net revenue for the six months was $284.8 million, up 26 percent from $225.9 million.

"This quarter Novell successfully brought to market the latest generations of NetWare server operating system products for the two primary markets we serve," said Raymond J. Noorda, chairman.

"These new NetWare products account for more than 80 percent of our total revenue stream and address both Novell's traditional small-business-oriented market and our growing presence in large organizations with business-wide network computing needs," said Noorda.

Novell is a provider of software that integrates desktop computers, servers, and minicomputer and mainframe hosts for information sharing.