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The ALL_HOMES subkey provides information about all the Oracle home directories on your Windows server. The key has values for the default home, the last installed Oracle home, and the number of Oracle homes on your server.

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Surprisingly, there is very little difference between managing a Windows-based Oracle server and a UNIX-based Oracle server. You use exactly the same commands for all the database activities there is no need to learn new commands when you switch operating systems. The management differences relate mainly to starting and stopping services, some backup commands, and how you monitor the instance. In the following sections you ll see the important elements of managing Oracle databases on Windows servers.

*/ }; To define the width of the enum, the type bool, as well as the primitive signed and unsigned integer types, can be used In contrast to native enums, managed enums do not have a standard conversion to and from int Neither does such a conversion exist for the primitive type that specifies the width of the enum type Instead of standard conversions, casts must be used When the C++/CLI compiler generates a managed enum type, it extends a class from System::Enum, which itself derives from System::ValueType Since a managed enum type is implicitly a value type, it can be instantiated as a value on the stack This implies boxing when an enum value is casted or converted to a tracking handle type As an example, when an enum value is passed to Console::WriteLine, the overload WriteLine(Object^) is called.

When you create a new Oracle database on a Windows server, a number of services are started for the instance by the Windows operating system. The two main Oracle services on Windows are the Oracle Database Service and the Oracle Listener Service. You can stop and start any Windows services, including the Oracle Database Service and the Oracle Listener Service, through the Services window. You can access the Services window by selecting Settings Control Panel Administrative Tools Services. To log in to a database to perform tasks such as startup and shutdown, you need to log in as a user with the SYSDBA role in SQL*Plus. For example, this is the way the user SYS can log in to the database named finance: C:\ SQLPLUS sys/sys_passwd@finance AS SYSDBA The following sections describe the important Oracle services that you can manage from the Services window. You can configure each service as manual or automatic, which means that the service will come up by itself when the Windows server starts up.

The Oracle Service is the main Oracle Database Service, usually named OracleServiceSID, and without it you can t access the database. This service runs the main Oracle executable, oracle.exe. The Oracle Service has the naming convention OracleServiceSID (for example, OracleServiceManager if Manager is the name of the instance). If the Oracle Service is not up for some reason, and you try to connect to the database, you ll get an Oracle error, as shown here: ERROR: ORA-12500: TNS:listener failed to start a dedicated server process If you try to start the database from the command line while the Oracle Service is down, you ll get the ORA-12571 error, as shown here: SQL> STARTUP ORA-12571: TNS: packet writer failure You must make sure the Oracle Service for a database is running before you start up the database itself. Once the service is running, you can start up the database as shown in Listing 20-5. Listing 20-5. Starting the Oracle Database C:\ SET ORACLE_SID=shan C:\ sqlplus /nolog SQL*Plus: Release 10.2.0.0.0 - Beta on Sat Apr 9 12:44:42 2005 Copyright (c) 1982, 2004, Oracle. All rights reserved. SQL> connect sys/sammyy1 as sysdba Connected to an idle instance. SQL> STARTUP ORACLE instance started. Total System Global Area 612368384 bytes Fixed Size 1250308 bytes Variable Size 174386172 bytes Database Buffers 436207616 bytes Redo Buffers 524288 bytes Database mounted. Database opened. SQL>