<PAGE>   1
                                                                   EXHIBIT 10.14

                            UNION BANK OF CALIFORNIA

                               SECURITY AGREEMENT
                             (Investment Accounts)

This Security Agreement ("Agreement") is made as of June 2, 1998, by and
between Oasis Healthcare Holdings Corp. ("Debtor"), and UNION BANK OF
CALIFORNIA, N.A. ("Bank"). In consideration of the financial accommodations
given, to be given or continued, to Oacis Healthcare Systems, Inc. ("Systems"),
Bank and Debtor agree to the following terms and conditions.

1.    GRANT OF SECURITY INTEREST; DELIVERY OF COLLATERAL; OBLIGATIONS SECURED.

      1.1   Debtor hereby grants Bank a security interest in the Collateral, as
      hereinafter defined.

      1.2   The security interest granted by Debtor to Bank secures payment and
      performance of all of Systems present and future debts, obligations and
      liabilities to Bank, whether absolute or contingent, direct or indirect,
      liquidated or unliquidated, arising in connection with (a) that certain
      promissory note by Systems in favor of Bank dated June 2, 1998, and any
      renewals, extensions, modifications and substitutions thereof, and (b)
      any obligation arising in connection with System's depository
      relationship with Bank, including cash management and ACH services, and
      whether or not secured by assets in addition to the Collateral, except:
      any "consumer credit" indebtedness under the Federal Truth in Lending Act
      and regulations thereunder unless the Collateral and type of security
      interest granted to Bank under this Agreement is disclosed at the time
      incurred if and as then required by such Act and regulations (the
      foregoing to be hereinafter collectively called "Obligations"). Any
      writing which evidences or is an agreement in respect to all or any
      portion of the Obligations is a "Loan Document".

2.    COLLATERAL. The term "Collateral" means, collectively, (i) Debtor's
securities account(s) described in Exhibit A hereto, all security entitlements,
investment property and other financial assets now or hereafter credited to said
securities account(s), and all of Debtor's rights in respect of said securities
account(s) security entitlements, investment property and other financial
assets; (ii) Debtor's deposit account(s) described in Exhibit A hereto; (iii)
all other investment accounts of Debtor described in Exhibit A hereto, and all
certificated securities, uncertificated securities and financial or other assets
now or hereafter contained in said accounts; and (iv) all products, proceeds and
revenues of and from the personal property described in clauses (i), (ii), and
(iii), above, together with all substitutions therefor and additions thereto
including without limitation stock rights, rights to subscribe, liquidating
dividends, stock dividends, cash dividends, interest, new securities and other
property to which Debtor is or may hereafter become entitled to receive on
account of such personal property (collectively, "Collateral Revenues"). Bank
acknowledges that Debtor maintains additional deposit and investment accounts
with Bank that are not substitutions for the foregoing and are not collateral
hereunder.

3.    PERFECTION OF SECURITY INTEREST. It is the intent of Debtor and Bank that
the security interest herein granted be perfected by "control" (as defined in
Section 8-106 of the Uniform Commercial Code or the equivalent section of
Division/Article 8 of the Commercial Code, as amended from time to time, of the
state whose law governs this Agreement). Debtor hereby agrees that it will join
with Bank in taking any action required by Bank in order to perfect such
security interest and protect the rights and priorities of Bank with respect to
the Collateral. Debtor will, at Bank's request (i) duly endorse in blank, and
deliver to Bank, each and every security certificate and instrument constituting
Collateral by signing on said certificate or instrument or by signing a
separate document of assignment or transfer; (ii) join with Bank in executing
any instructions to, or agreement with, a securities intermediary for the
purpose of obtaining control of each security account and each financial asset
constituting Collateral; and (iii) instruct the issuer of any uncertificated
security to transfer any such security to and register such security in the
name of Bank. Debtor agrees that if any Collateral is being held by Bank in its
capacity as a securities intermediary or pursuant to a safekeeping or similar
agreement, Bank shall be deemed to possess such Collateral as a secured party
for purposes of perfecting its security interest, and if there is any conflict
between the terms of the agreement under which Bank is holding such Collateral
and this Agreement, the terms of this Agreement shall prevail.

4.    APPLICATION OF COLLATERAL REVENUES. So long as the Collateral Requirement
is maintained and no Event of Default has occurred, as both those terms are
hereinafter defined, Debtor may make withdrawals consisting solely of cash
dividend and/or interest income from the securities account(s) in which Bank
has herein been granted a security interest. If Debtor is out of compliance
with the Collateral Requirement or an Event of Default has occurred, 

                                                                          Page 1

<PAGE>   2
Bank may take such steps as shall be necessary to preclude Debtor from making
withdrawals of any type from such securities account(s), or to direct payment
of all Collateral Revenues to Bank to be held in a non-interest bearing
account, until such time as Debtor has complied with the provisions of Section
6.3 or until such Event of Default has been cured or waived by Bank, as the
case may be. Bank's rights under the preceding sentence of this Section 4 are
in addition to all other rights afforded Bank under this Agreement, or
otherwise, including without limitation those set forth in Sections 10.1 and
10.2.

5.   DEBTOR'S COVENANTS. Debtor hereby represents, warrants and agrees that:

     5.1  Debtor has full and complete marketable title to the Collateral and
     the Collateral now is, and Debtor will at all times keep the Collateral
     free of all liens, encumbrances and claims of any kind or nature other than
     the security interest of Bank.

     5.2  Debtor will not sell, transfer or otherwise dispose of any of the
     Collateral or any interest therein to any individual or entity ("Person").

     5.3  The Collateral complies with all applicable laws, regulations,
     interpretations and orders concerning form, content and manner of
     preparation and execution.

     5.4  All the Collateral has been duly and validly issued and is fully paid
     for and non-assessable. Except for Collateral that Debtor has specifically
     designated in writing as "restricted stock" and/or "control stock" as
     defined by Securities and Exchange Commission Rule 144 in effect on the
     date of this Agreement, or as may be specifically stated to Bank in
     writing prior to the date hereof, all Collateral is transferable without
     prior notice to, or approval or consent from, any Person or governmental
     authority, and there exists no condition or restriction to or affecting
     the transfer of the Collateral.

     5.5  Debtor will pay when due and prior to delinquency all taxes, levies,
     assessments or other claims which are or may become liens against the
     Collateral.

     5.6  Debtor will neither make nor permit any material change in the
     nature, value or type of the Collateral without Bank's prior written
     consent.

     5.7  Debtor will deliver to Bank promptly or ensure that Bank promptly
     receives (i) all Collateral, (ii) except as otherwise provided herein, all
     Collateral Revenues, (iii) such specific acknowledgments, Regulation U
     Statement of Purpose forms or other agreements or writings as Bank may
     request relating to the Collateral, (iv) copies of records and other
     reports relating to the Collateral in such form and detail and at such
     times as Bank may from time to time require, and (v) such information as
     Bank reasonably requires from time to time regarding Debtor's financial
     condition or the Collateral and events which could affect either or both,
     and will permit Bank access at reasonable times to its records containing
     such information.

     5.8  Debtor will from time to time as required by Bank: execute and
     deliver to Bank, and file or record at Debtor's expense, all notices and
     other documents Bank deems necessary in order for it to maintain a
     first-priority perfected security interest and control over, the
     Collateral; and perform such other acts, and execute and deliver to Bank
     in, such additional assignments, agreements and instruments as Bank may
     request in connection with the administration and enforcement of this
     Agreement and Bank's rights, powers and remedies hereunder.

     5.9  Without Bank's prior written consent, Debtor will not change its
     name, mailing address, the nature of its business, or its legal structure,
     or, if Debtor is an issuer of any Collateral, issue, cause, permit or
     suffer any stock or other securities to be issued, except subject to this
     Agreement, and delivered to Bank hereunder.

     5.10 Debtor will not exercise or refrain from exercising any voting or
     consensual rights or powers relating to any Collateral if, in the judgment
     of Bank, such action would have a material adverse effect on the value of
     the Collateral.

6.   COLLATERAL REQUIREMENT.

     6.1  The Collateral shall be maintained by or on behalf of Debtor in an
     amount such that the Obligations secured hereby shall not at any time
     exceed an amount equal to: (A.) Ninety percent (90%) of the Pledged Value
     of the eligible collateral which are United States Government Treasury
     Bills, Bonds or Notes; and (B.) Eighty percent (80%) of the Pledge Value
     of the eligible collateral which are other government or corporate notes,
     bonds or commercial paper which are rated Baa or better as rated by
     Moody's Investor Service or BBB or better by Standard and Poors
     Corporation (the "Collateral Requirement").

                                                                          Page 2
<PAGE>   3
     6.2  The "Pledged Value" of the Collateral shall be the aggregate current
     fair market value of the Collateral consisting of marketable securities,
     plus 100% of the value of Collateral Revenues consisting of cash or its
     equivalent then held by Bank hereunder. From time to time, Bank may, at
     its option, value the Collateral as of the preceding Business Day, as
     hereinafter defined (the "Valuation Date"), for the purpose of determining
     compliance with Section 6.1. Subject to the foregoing, the current fair
     market value of the Collateral shall be determined: (i) by reference to
     the lowest bid prices therefor appearing on the appropriate pages of, at
     Bank's option, the Telerate system or the Bloomberg system, or (ii) if
     dealer bids are used, with reference to the lower of two or more bids (at
     least one of which shall be in writing) from NASD member dealers making
     markets in the specific Collateral being valued, or (iii) by reference to
     any other source that commonly quotes values for such securities.
     "Business Day" means a day on which Bank's corporate headquarters is open
     for business to the public.

     6.3  If at any time Bank's Collateral valuation indicates a deficiency
     with respect to the Collateral Requirement, Bank shall give telephonic or
     other notice of such deficiency to Debtor, and Debtor shall immediately
     either (a) deliver to Bank additional Collateral, or (b) pay down the
     outstanding principal balance of the Obligations in an amount sufficient
     to comply with the Collateral Requirement.

     6.4  Bank shall not be liable to Debtor or any other Person for any loss
     or diminution in value of any Collateral or the proceeds thereof,
     irrespective of whether Debtor may retain hereunder the right to
     substitute Collateral. Bank shall not pay interest on the Collateral and
     does not assume responsibility for the earning of any income thereon.

7.   SUBSTITUTION OF COLLATERAL. Except as and to the extent otherwise provided
in Exhibit A hereto, and unless an Event of Default has occurred and is
continuing, Debtor shall have the right, at any time after the date of Bank's
initial receipt of Collateral sufficient to meet the Collateral Requirement, to
deliver to Bank new Collateral in substitution for the Collateral or any portion
thereof and to obtain the release of the Collateral or a portion thereof so
substituted for by presenting to Bank: (i) a written request for such release
specifying the Collateral to be released; (ii) new Collateral having a Pledged
Value at least equal to the Pledged Value of the Collateral to be released;
(iii) a certificate executed by Debtor stating that: (a) following such release
and substitution, the Collateral held by Bank will have a Pledged Value at
least equal to the Collateral Requirement, and (b) the Collateral has been
delivered in accordance with this Agreement and all actions necessary to be
taken by Debtor to perfect Bank's first priority security interest in, and
obtain control over, such Collateral have been duly taken and a valid first
priority perfected security interest has been created in such Collateral in
favor of Bank. Bank may, at its option, confirm the value of such substitute
Collateral in accordance with the procedures specified in Section 6.2. Upon
receipt of the items enumerated above and confirmation, if undertaken, of the
value of such substitute Collateral, Bank shall promptly release or cause to be
released the Collateral for which substitution has been made, together with any
transfer instruments or documents in such form as may be required to achieve
such transfer. Debtor may request substitution of Collateral when desired.

8.   EXCESS COLLATERAL. Unless an Event of Default has occurred and is
continuing, if at any time Debtor determines, in accordance with Section 6.2,
that the Collateral has a Pledged Value equal to Collateral Requirement, Debtor
may obtain the release of Collateral having a Pledged Value equal to such
excess by presenting to Bank: (i) a written request for such release specifying
the Collateral Debtor wishes released and (ii) a certificate executed by Debtor
stating that, following such release, the remaining Collateral will have an
aggregate Pledged Value at least equal to the Collateral Requirement. Bank may,
at its option, confirm the value of the requested Collateral and the remaining
Collateral in accordance with the procedures specified in Section 6.2. Upon
receipt of the items enumerated above and confirmation, if undertaken, of the
value of the requested and remaining Collateral, Bank shall release or cause to
be released such requested Collateral, together with any transfer instruments
or documents in such form as may be required to achieve such transfer. Debtor
may submit a written request for the release of Collateral when desired.

9.   EVENTS OF DEFAULT. The occurrence of any of the following shall constitute
an Event of Default:

     9.1  Debtor shall fail to pay any fees or other charges when due under this
     Agreement, or Debtor, Systems or any other Person shall fail to perform
     any obligation under this Agreement or any other Loan Documents, or any
     default shall occur under any Loan Document.

     9.2  Any representation or warranty made, or financial statement,
     certificate or other document provided, by Debtor or any guarantor of the
     Obligations ("Guarantor") to Bank shall prove to have been false or
     misleading.

     9.3  Debtor or any Guarantor shall fail to pay its debts generally as they
     become due or shall file any petition or action for relief under any
     bankruptcy, insolvency, reorganization, moratorium, creditor composition 
<PAGE>   4


law, or any other law for the relief of or relating to debtors; an involuntary
petition shall be filed under any such law against Debtor or any Guarantor, or a
custodian, receiver, trustee, assignee for the benefit of creditors or other
similar official shall be appointed to take possession, custody or control of
the properties of Debtor or any Guarantor; or the death, incapacity, dissolution
or termination of the business of Debtor or any Guarantor.

9.4      N/A

9.5      N/A

9.6      N/A

9.7      Any Person shall fail to perform its obligations under the terms of any
promissory note, contract or other obligation that is held by Bank as
Collateral; or Bank shall not have a first-priority perfected security interest
in, and control over, or shall deem itself insecure with respect to the value
of, any Collateral.

9.8      N/A

9.9      N/A

9.10     Any deterioration or impairment of any of the Collateral or any decline
or depreciation in the value or the market price thereof (whether actual or
reasonably anticipated), which causes the Collateral, in Bank's judgment, to
become unsatisfactory as to character or value.

9.11     Bank reasonably determines, in good faith, that its security interest
in the Collateral or the prospect of payment or performance under this Agreement
or any Loan Document secured hereby is materially impaired.

9.12     Bank, in good faith, believes any or all of the Collateral, including
any proceeds, to be in danger of misuse, dissipation, commingling, loss, theft,
damage or destruction, or otherwise in jeopardy.

9.13     N/A

9.14     Debtor shall fail to perform any of its duties or obligations under
this Agreement not specifically referenced in this Section 9.

10.      Bank's Rights On Default.

10.1     Upon the occurrence of an Event of Default, Bank shall be entitled to
declare any of the Obligations immediately due and payable, and Bank shall have
all rights provided in the California Uniform Commercial Code or otherwise
available by law to take possession of any Collateral and sell and dispose of
the same or any part thereof at public or private sale or at any broker's board
or on any securities exchange, for cash, upon credit or for future delivery, and
at such price or prices as Bank may deem satisfactory. Bank may be the purchaser
of any or all of the Collateral sold at any public sale (or, if the Collateral
is of a type customarily sold in a recognized market or is of a type which is
the subject of widely distributed standard price quotations, at any private
sale) and thereafter hold the same free from any right or claim of whatsoever
kind. Bank is authorized, an any such sale, if it deems it advisable so to do,
to restrict the prospective bidders or purchasers of any of the Collateral to
persons who will represent and agree that they are purchasing for their own
account for investment, and not with a view to the distribution or sale of any
of the Collateral. Upon any such sale Bank shall have the right to deliver,
assign and transfer such Collateral sold to the purchaser. Each purchaser shall
hold the Collateral, free from any claim or right of whatsoever kind, including
without limitation any equity or right of redemption of Debtor, who or which, to
the extent permitted by law, hereby waives any now existing or hereafter
acquired rights of redemption, stay or appraisal. If notice to Debtor of any
intended disposition of the Collateral is required by law in a particular
instance, Bank shall give Debtor ten days' written notice of its intention to
make any such public or private sale or sale at a broker's board or on a
securities exchange. Such notice, in case of a public sale, shall state the time
and place for such sale, and, in case of sale at a broker's board or on a
securities exchange, shall state the board or exchange at which such sale is to
be made and the day on which the Collateral or portion thereof, will first be
offered for sale. Any public sale shall be held at such times within ordinary
business hours and at such places as Bank may fix in the notice of such sale. At
any such sale the Collateral may be sold in one lot or in separate parcels. Bank
shall not be obligated to make any such sale pursuant to any such notice. Bank
may, without notice or publication, adjourn any public or private sale or cause
the same to be adjourned from time to time by announcement at the time and 
place fixed for the sale, and such sale may be made at any time or place to
which the same may be so adjourned. In case of any sale of all or part of the
Collateral on credit or for future delivery, the 


                                                                          Page 4
<PAGE>   5
     Collateral so sold may be retained by Bank until the selling price is paid
     by the purchaser thereof, but Bank shall not incur any liability in case
     of the failure of such purchaser to take up and pay for the Collateral so
     sold and, in case of any such failure, such Collateral may again be sold
     upon like notice. Bank, instead of exercising the power of sale herein
     conferred upon it, may proceed by a suit(s) at law or in equity to
     foreclose upon and sell the Collateral, or any portion thereof, under a
     judgment or decree of court(s) of competent jurisdiction. Debtor hereby
     agrees that any disposition of Collateral by way of a private placement or
     other method which, in the opinion of Bank, is required or advisable under
     Federal and state securities laws is commercially reasonable.

     10.2 Upon the occurrence and during the continuance of an Event of
     Default: All rights of Debtor to receive Collateral Revenues shall be
     suspended as set forth in Section 4. Debtor's right to exercise voting or
     consensual rights and powers with respect to the Collateral shall cease,
     and all such rights and authority to exercise such voting or consensual
     rights and powers shall inure to Bank. Any and all Collateral Revenues
     received by Bank may be retained by Bank as additional Collateral or, in
     Bank's sole discretion, may be applied toward the satisfaction of the
     Obligations. In such event Bank shall have the right and power to receive,
     endorse and collect all checks and other orders for payment of money made
     payable to Debtor representing any dividend or other distribution payable
     or distributable in respect of any Collateral.

11.  COSTS AND EXPENSES. Debtor shall, to the extent permitted by applicable
law, reimburse Bank promptly for all costs and expenses incurred by Bank in
performing any agreement of Debtor which Debtor shall fail to perform, or in
taking any other action which Bank deems necessary for the maintenance or
preservation of any Collateral or Bank's interest therein.

12.  POWER OF ATTORNEY.

     12.1 Debtor hereby irrevocably appoints Bank, or any officer thereof, as
     Debtor's true and lawful attorney-in-fact coupled with an interest, with
     full power of substitution, to sign or endorse any instrument, document,
     or other writing necessary or desirable to transfer title or other rights
     to or in any of the Collateral; and to do all acts necessary or incidental
     to assert, protect and enforce Bank's rights in the Collateral and under
     this Agreement. Debtor agrees to reimburse Bank promptly upon demand for
     any expenses Bank may incur while acting as Debtor's attorney-in-fact. The
     power of attorney granted herein shall not be exercised except during the
     continuance of an Event of Default.

     12.2 At any time, during the continuance of an Event of Default, without
     notice, and at Debtor's expense, Bank in its name or in the name of Debtor
     may, but shall not be obligated to (i) collect by legal proceedings or
     otherwise, endorse, receive and receipt for all dividends, interest,
     principal payments and other sums now or hereafter payable upon or on
     account of the Collateral; (ii) make any compromise or settlement it deems
     desirable or proper with reference to the Collateral; (iii) participate in
     any recapitalization, reclassification, reorganization, consolidation,
     redemption, stock split, merger or liquidation of any issuer of any
     Collateral, and, in connection therewith, deposit or surrender control of
     the Collateral, accept money or other property in exchange for the
     Collateral, and take such action as it deems proper in connection
     therewith, and any other money or property received in exchange for the
     Collateral shall be applied to the Obligations or held by Bank thereafter
     as Collateral pursuant to the provisions hereof; (iv) cause Collateral to
     be transferred to its name (if not already in Bank's name) or to the name
     of its nominee; and (v) pursuant to Section 10.2, exercise as to the
     Collateral all the rights, powers and remedies of an owner.

13.  WAIVERS OF DEBTOR. Debtor waives any right to require Bank to proceed
against any Person, or to exhaust any Collateral or to pursue any remedy in
Bank's power whatsoever. Bank shall not be required to make presentment, demand
or protest, or give any notices thereof, or take any action to preserve rights
against prior parties with respect to any of the Collateral. Debtor waives the
right to plead any statute of limitations or any defense to the personal
liability of Debtor as a defense to Bank's exercise of any right or remedy
hereunder.

14.  BANK'S DUTIES.

     14.1 Bank's sole duty with respect to the Collateral in its possession
     shall be to use reasonable care in the custody and preservation thereof.
     Bank shall be deemed to have exercised reasonable care in the custody and
     preservation of such Collateral if such Collateral is accorded treatment
     substantially equal to that which Bank accords its own property, it being
     understood that Bank shall not have any responsibility for ascertaining or
     taking action with respect to calls, conversions, exchanges, maturities,
     declining value, tenders or other matters relative to any Collateral,
     regardless of whether Bank has or is deemed to have knowledge of such
     matters; or taking any steps to preserve any rights against any Person
     with respect to any Collateral. Under no circumstances shall Bank be
     responsible for any injury or loss to the Collateral, or any part thereof,
     arising from any cause beyond the reasonable control of Bank.

                                                                          Page 5
<PAGE>   6
     14.2 Bank may at any time deliver or cause to be delivered the
     Collateral or any part thereof to Debtor, and Debtor's receipt shall be a
     complete and full acquittance for the Collateral so delivered, and Bank
     shall thereafter be discharged from any liability or responsibility
     therefor.

15.  ASSIGNMENT. Debtor may not assign or transfer Debtor's obligations
hereunder without Bank's prior written consent. Bank reserves the right to
sell, assign or transfer its rights and duties under this Agreement, in whole
or in part without notice to Debtor. In that connection, Bank may disclose all
documents and information which Bank may have pertaining to this Agreement,
Debtor or Debtor's business. On transfer of all or any part of the
Indebtedness or a participation interest therein, Bank may transfer all or any
part of or interest in the Collateral. Bank may deliver all or any part of the
Collateral to any Debtor at any time. Any such transfer or delivery shall
discharge Bank from all liability and responsibility with respect to such
Collateral transferred or delivered. This agreement benefits Bank's successors
and assigns and binds Debtor's heirs, legatees, personal representatives,
successors and assigns. Debtor agrees not to assert against any assignee of
Bank any claim or defense Debtor may have against Bank.

16.  MODIFICATION AND WAIVER. Any forbearance or failure or delay by Bank in
exercising any right, power or remedy hereunder, or acceptance of partial or
delinquent payments, shall not be deemed a waiver thereof or of any other right
hereunder, and any single or partial exercise of any right, power or remedy
shall not preclude the further exercise thereof. No waiver or consent shall be
effective unless it is in writing and signed by an officer of Bank. No waiver
of a current breach shall be deemed a waiver of a future breach. Bank may cure
any Event of Default at Debtor's expense.

17.  MISCELLANEOUS. Time is of the essence of this Agreement and all its
provisions. Debtor will execute any additional agreements, assignments,
notices, filings or documents reasonably required by Bank to effectuate this
Agreement or to preserve and protect any Collateral and Bank's rights. This
Agreement shall be governed by the laws of the State of California and, unless
otherwise defined or provided herein, all words used in this Agreement have the
meanings given them in the California Uniform Commercial Code. Titles preceding
any paragraph of this Agreement are for convenience only and are not a part of
this agreement. All rights herein are cumulative and in addition to all rights
available under law or contract. Any notices or other communications provided
for or allowed hereunder shall be effective only when given by one of the
following methods and addressed to the respective party at its address given
with the signatures at the end of this Agreement and shall be considered to
have been validly given (a) upon delivery, if delivered personally, or (b) upon
receipt, if mailed upon placement in the United States mail, first class postage
prepaid or if sent by overnight courier service of recognized standing, and (c)
upon telephoned confirmation of receipt, if sent by telecopy or facsimile.
Unless separate notice is requested in writing by any Debtor, notice given to
any Debtor shall constitute notice to all Debtors. Should any one or more
provisions of this Agreement be determined to be illegal or unenforceable, all
other provisions nevertheless shall be effective. Except for the Loan Documents
and documents and instruments referenced herein, this Agreement and any
exhibits, schedules or addenda, constitute the entire agreement between Bank
and Debtor in connection with the Collateral and supersede all prior
understandings or agreements concerning the subject matter hereof.

18.  INDEMNIFICATION. Debtor shall pay and protect, defend and indemnify Bank
and Bank's employees, officers, directors, shareholders, affiliates,
correspondents, agents and representatives (other than Bank, collectively
"Agents") against, and hold Bank and each such Agent harmless from, all claims,
actions, proceedings, liabilities, damages, losses, expenses (including without
limitation attorneys' fees and costs) and other amounts incurred by Bank and
each such Agent, arising from the matters-contemplated by this Agreement or any
Loan Document; PROVIDED, HOWEVER, that this indemnification shall not apply to
any of the foregoing incurred solely as the result of Bank's or any Agent's
gross negligence or willful misconduct. This indemnification shall survive the
payment and satisfaction of all Obligations.

19.  REIMBURSEMENT. Debtor shall reimburse Bank for all costs and expenses,
including without limitation reasonable attorneys' fees and disbursements (and
fees and disbursements of Bank's in-house counsel) expended or incurred by Bank
in any arbitration, mediation, judicial reference, legal action or otherwise in
connection with (a) the negotiation, preparation, amendment, interpretation and
enforcement of this Agreement, (b) any workout or attempted workout, (c) the
rendering of legal advice as to Bank's rights, remedies and obligations under
this Agreement or any of the Loan Documents, (d) collecting any sum which
becomes due Bank under this Agreement or any Loan Document, (e) any proceeding
for declaratory relief, counterclaim to any proceeding, appeal, contempt
proceeding, discovery, or post-judgment motions and proceedings of any kind,
including without limitation any action taken to collect or enforce any
judgment, (f) the protection, preservation or enforcement of any rights of Bank,
(g) any motion, proceeding or other activity in connection with a case under
Title 11 of the United States Code or any similar law, or (h) garnishment, levy
and third party examinations.

20.  N/A.
 
                                                                          Page 6
<PAGE>   7
21.   COPY. Each Debtor acknowledges receipt of a copy of this Agreement.

22.   N/A DESIGNATION. Whenever "N/A" appears in this Agreement, it means that
the section in which it appears is deemed deleted from this Agreement.

IN WITNESS WHEREOF, Debtor has executed this Agreement as of the date set forth
in the preamble.

DEBTOR

Oacis Healthcare Holdings Corp.



   /s/  STEPHEN F. GHIGLIERI
-------------------------------------
        Stephen F. Ghiglieri
  VP Finance & Admin./CFO/Secretary



       /s/  JOHN C. KINGERY
-------------------------------------
           John C. Kingery  
President/Chief Operating Officer

Address(es) of chief place(s) of business and
chief executive office, or if none, residence:

300 Drake's Landing Road, Ste. 1000
Greenbrae, CA 94904
<PAGE>   8
'                               SECURITY AGREEMENT
                                  EXHIBIT "A"


The following securities, deposit and other investment accounts in which Debtor
now has or hereafter acquires any right, all security entitlements, investment
property and financial and other assets now or hereafter credited to or
contained in said accounts, and all products, proceeds, interest and revenues of
and from said accounts and assets, together with any and all renewals,
substitutions, exchanges or replacements thereof or of any of the assets
contained therein ("Collateral"):

Custodial Account No. 20002370001

Additional Covenants: Debtor further agrees that Bank reserves the right at any
time following and during the continuance of an Event of Default hereunder, and
in its sole discretion, to limit and/or prohibit Debtor from effecting
withdrawals (including withdrawals of cash dividend or interest income), sales,
trades, transfers or exchanges of any Collateral held in said account or to
place reasonable additional conditions upon such transactions.

DEBTOR

Oacis Healthcare Holdings Corp.


/s/ STEPHEN F. GHIGLIERI
-------------------------------------
Stephen F. Ghiglieri
VP Finance & Admin./CFO/Secretary


/s/ JOHN C. KINGERY
-------------------------------------
John C. Kingery
President/Chief Operating Officer