How to convert a dedicated running oracle server to a shared server

i need help as to how to convert a dedicated running oracle server to a shared server.(step by step plz i am fairly a fresh person)
there are presently 10 users but have to configure for 125 users accessing from 5 locations.
also need how to implement connection manager

125 users are not so much, unless your database server is a quite small one. Anyway, you have to configure Dispatchers and Shared Servers. See Configuring Oracle Database for Shared Server
About Connection Manager see Configuring and Administering Oracle Connection Manager

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    제품 : ORACLE SERVER
    작성날짜 : 1995-01-24
    Subject: Oracle Server and UNIX Transaction Processing Monitors-2
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    Is there any collateral available for XA or TP Monitors?
    Oracle At Work 52684.0692
    Oracle7 Server for UNIX Administrator's #A10324-1
    Reference Guide
    Guide to Oracle's Products and Services #A10560
    Oracle7 Server and CICS/6000               #A14200
    Where can I get more information on the DTP model?
    X/Open's address is
    X/Open company Ltd (Publications)
    P O Box 109
    Penn
    High Wycombe
    Bucks HP10 8NP
    Tel: +44 (0)494 813844
    Fax: +44 (0)494 814989
    Request
    G307 Distributed Transaction Processing: Reference Model Version 2
    X/Open Guide G307 ISBN 1-859120-19-9 28cm.44p.pbk.220g.11/93
    Page(4/4)
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    Performance with Oracle Server and TP Monitors
    ==============================================
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