Oracle几个基础配置问题：ORA-12154: TNS: 无法解析指定的连接标识符、ORA-12514: TNS: 监听程序当前无法识别连接描述符中请求的服务、ORA-12516 TNS监听程序找不到符合协议堆栈要求的可用处理程序

# sqlnet.ora Network Configuration File: C:\app\Administrator\product\11.2.0\client_1\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

# This file is actually generated by netca. But if customers choose to 
# install "Software Only", this file wont exist and without the native 
# authentication, they will not be able to connect to the database on NT.

SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH

# listener.ora Network Configuration File: D:\app\Administrator\product\11.2.0\dbhome_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = C:\app\Administrator\product\11.2.0\dbhome_1)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:C:\app\Administrator\product\11.2.0\dbhome_1\bin\oraclr11.dll")
    )
    (SID_DESC 

      (GLOBAL_DBNAME 

 ora11r2)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.101)(PORT = 1521))
    )
  )

ADR_BASE_LISTENER = C:\app\Administrator

select t1.*, t2.CurrentValue
from (select t.NAME, t.VALUE 
      from v$parameter t 
      where t.name in (‘processes‘, ‘sessions‘)
     ) t1
     join (
       select ‘processes‘ as name, count(1) as CurrentValue from v$process
       union all
       select ‘sessions‘ as name, count(1) as CurrentValue from v$session
     ) t2 on t1.name = t2.name

SQL> alter system set processes=1000 scope=spfile;
SQL> alter system set sessions=1200 scope=spfile;

SQL> shutdown immediate;
SQL> startup;
SQL> show parameter processes;