ORACLE11G Ora-12560:tns: Protocol Adapter Error ____oracle

When installing the language to choose Al32utf8

The Nls_lang=american_america of the registry. Al32utf8

Sqlplus/as SYSDBA

Ora-12560:tns: There are three reasons for the problem with the protocol adapter error:

1. The monitoring service did not rise. Windows platform: Run "services.msc" to start the Oracleoradb11g_home1tnslistener service.

2.database instance did not rise. Windows platform: Run "services.msc", start Oracleservicexxxx,xxxx is your oraclesid.

3. Registry issues. regedit, and then enter the hkey_local_machine\software\oracle\key_oradb11g_home1 to put the environment variable

Oracle_sid set to Xxxx,xxxx is your database SID. Or right My computer, attributes--advanced--environment variable---system

Variable--New, variable name =oracle_sid, variable value =xxxx,xxxx is your database SID. Or before entering the Sqlplus,

Command line down set Oracle_sid

If server and client are installed at the same time, Sqlplus should be open with the client directory

Copy this oracle_sid from Hkey_local_machine\software\oracle\key_oradb11g_home1\oracle_sid to Key_oraclient11g_home1

Ora-28009:connection as SYS should be as SYSDBA or sysoper

After playing the Sqlplus, to enter, directly in the user name of the sys/password as SYSDBA can be