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                                                                    EXHIBIT 99.2
                         NOTICE OF GUARANTEED DELIVERY

                                      FOR

                        TENDER OF SHARES OF COMMON STOCK

                                       OF

                           NEW ERA OF NETWORKS, INC.

                                       TO

                             NEEL ACQUISITION CORP.
                           A WHOLLY OWNED SUBSIDIARY

                                       OF

                                  SYBASE, INC.
                   (NOT TO BE USED FOR SIGNATURE GUARANTEES)

     This Notice of Guaranteed Delivery, or a form substantially equivalent
hereto, must be used to accept the Offer (as defined below) if certificates
representing shares of common stock, par value $0.0001 per share (the "NEON
Shares"), of New Era of Networks, Inc., a Delaware corporation ("NEON"), are not
immediately available, if the procedure for book-entry transfer cannot be
completed prior to the Expiration Date (as defined in the Prospectus dated March
15, 2001 (as may from time to time be amended, supplemented or finalized, the
"Prospectus"), or if time will not permit all required documents to reach
American Stock Transfer & Trust Company (the "Exchange Agent") prior to the
Expiration Date. Such form may be delivered by hand, transmitted by facsimile
transmission or mailed to the Exchange Agent. See "The Offer -- Procedure for
Tendering" in the Prospectus.

                      THE EXCHANGE AGENT FOR THE OFFER IS:

                    AMERICAN STOCK TRANSFER & TRUST COMPANY

                           REORGANIZATION DEPARTMENT
                                 50 MAIDEN LANE
                                  PLAZA LEVEL
                               NEW YORK, NY 10038

                                 BY FACSIMILE:
                        (FOR ELIGIBLE INSTITUTIONS ONLY)
                                 (718) 234-5001

                                   TOLL FREE:

                                 (877) 777-0800

     DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE NUMBER OTHER THAN
AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY.

     This form is not to be used to guarantee signatures. If a signature on a
Letter of Transmittal is required to be guaranteed by an "Eligible Institution"
under the instructions thereto, such signature guarantee must appear in the
applicable space provided in the signature box on the Letter of Transmittal.
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Ladies and Gentlemen:

     The undersigned hereby tenders to Neel Acquisition Corp. ("Purchaser"), a
Delaware corporation and a wholly-owned subsidiary of Sybase, Inc., a Delaware
corporation ("Parent"), upon the terms and subject to the conditions set forth
in the Prospectus and the related Letter of Transmittal (which, together with
any amendments or supplements thereto, constitute the "Offer"), receipt of which
is hereby acknowledged, the number of NEON Shares set forth below, pursuant to
the guaranteed delivery procedures set forth in "The Offer -- Guaranteed
Delivery" in the Prospectus.

 Signature(s):
 Name(s) of Record Holders:
                             (PLEASE TYPE OR PRINT)

 Number of Shares:
 Certificate No(s). (if available)
 Dated: ______________________________, 2001
 Area Code and Tel. No.(s):
 Check box if Shares will be tendered by book-entry transfer:  [ ]
 Account Number:

 Address(es):
                                    ZIP CODE

 Area Code and Tel. No.(s):
 Check box if NEON Shares will be tendered by book-entry transfer:  [ ]
 Account Number:

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                                   GUARANTEE
                   (NOT TO BE USED FOR SIGNATURE GUARANTEES)

     The undersigned, a participant in the Security Transfer Agents Medallion
Program, guarantees to deliver to the Exchange Agent either certificates
representing the NEON Shares tendered hereby, in proper form for transfer, or
timely confirmation of book-entry transfer of such NEON Shares into the Exchange
Agent's account at The Depository Trust Company, in each case with delivery of a
properly completed and duly executed Letter of Transmittal (or a manually signed
facsimile thereof), with any required signature guarantees, or an Agent's
Message (as defined in the Prospectus), and any other documents required by the
Letter of Transmittal, within three (3) Nasdaq trading days after the date
hereof.

     The Eligible Institution that completes this form must communicate the
guarantee to the Exchange Agent and must deliver the Letter of Transmittal and
certificates for NEON Shares to the Exchange Agent within the time period shown
herein. Failure to do so could result in a financial loss to such Eligible
Institution.

Name of Firm:
Address:

--------------------------------------------------------------------------------
                                                                        ZIP CODE
Area Code and Tel. No.:
Authorized Signature:
                                  PLEASE PRINT
Name:
Title:
Dated:   , 2001

NOTE: DO NOT SEND CERTIFICATES WITH THIS NOTICE OF GUARANTEED DELIVERY.
      CERTIFICATES SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL.

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