ORA-12520听程序无法为请求的服务器类型找到可用的处理程序

今天客户说无法远程连接数据库，配好TNS自己测，发现报错

ORA-12520听程序无法为请求的服务器类型找到可用的处理程序

远程登陆服务器用sqlplus连接 报错

C:\Users\Administrator>sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 9月 15 16:56:01 2015

Copyright (c) 1982, 2013, Oracle. All rights reserved.

ERROR:

ORA-00020: maximum number of processes (150) exceeded

后台alert报错

Tue Sep 15 16:34:12 2015

ORA-00020: 超出最大进程数 (150)

ORA-20 errors will not be written to the alert log for

the next minute. Please look at trace files to see all

the ORA-20 errors.

Process m000 submission failed with error = 20

Tue Sep 15 16:54:17 2015

ORA-00020: 超出最大进程数 (150)

ORA-20 errors will not be written to the alert log for

the next minute. Please look at trace files to see all

the ORA-20 errors.

Process m000 submission failed with error = 20

Tue Sep 15 16:56:01 2015

ORA-00020: maximum number of processes (150) exceeded

ORA-20 errors will not be written to the alert log for

the next minute. Please look at trace files to see all

the ORA-20 errors.

通过调整进程参数值来缓解压力

SQL> alter system set processes=500 scope=spfile;

系统已更改。

SQL> shutdown immediate

数据库已经关闭。

已经卸载数据库。

ORACLE 例程已经关闭。

C:\Users\Administrator>set ORACLE

oracle_sid=GDDB

C:\Users\Administrator>sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on 星期二 9月 15 17:04:05 2015

Copyright (c) 1982, 2013, Oracle. All rights reserved.

已连接到空闲例程。

SQL> startup

ORACLE 例程已经启动。

Total System Global Area 4710043648 bytes

Fixed Size 2289120 bytes

Variable Size 1073742368 bytes

Database Buffers 3623878656 bytes

Redo Buffers 10133504 bytes

数据库装载完毕。

数据库已经打开。

SQL> show parameter processes

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

aq_tm_processes integer 1

db_writer_processes integer 1

gcs_server_processes integer 0

global_txn_processes integer 1

job_queue_processes integer 1000

log_archive_max_processes integer 4

processes integer 500

SQL> select value from v$parameter where name = 'processes';

VALUE

--------------------------------------------------------------------------------

500

修改之后 远程可以连接。

感谢链接 ：http://blog.itpub.net/24558279/viewspace-752828