Oracle A423961 - Manual (Page 30)

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2 – 4 Oracle7 Server Getting Started for Windows NT
Windows on Win32 (WOW)
Most products running on Windows NT machines (including Oracle7
Server for Windows NT and the SQL*Net Listener) are 32–bit
Windows NT applications.
However, you can also use the Windows NT subsystem—Windows on
Win32 (WOW)—to use 16–bit Oracle Windows products. (Windows on
Win32 is installed automatically when you install the Windows NT
operating system.)
SQL*Net
and
Network
Protocol
for
Windows NT
Oracle7
RDBMS
for
Windows NT
Oracle
Database
Tools for
Windows
SQL*Net
and
Network
Protocol
for
Windows
Windows NT
WOW Subsystem
The interaction between Oracle products for Windows running on
WOW and your local Oracle7 database for Windows NT is called
loopback. You must install the same version of SQL*Net—along with the
appropriate protocol adapter software—for both Windows NT and
Windows in order for loopback to occur.
Attention: You can always achieve loopback by using
SQL*Net V2 along with the Oracle Named Pipes Protocol
Adapter or the Oracle TCP/IP Protocol Adapter for Windows
NT and Windows. Remember that you need a network card if
you use SQL*Net V2 with the TCP/IP protocol adapter.
Attention: If you are using your Windows NT machine as a
client, you can install SQL*Net V2 Client for Windows NT plus
the appropriate Windows NT protocol adapter (Named Pipes,
TCP/IP, or SPX).