ORA-12528: TNS:listener: all appropriate instances are blocking new connections

时间 2019-11-06

标签 ora tns listener appropriate instances blocking new connections 繁體版

原文原文链接

Oracle问题：ORA-12528: TNS: 监听程序: 全部适用例程都没法创建新链接

问题原始描述：

ORA-12528: TNS:listener: all appropriate instances are blocking new connectionssql

发现问题：

经过在CMD下用lsnrctl status 查看出的问题：发现BLOCKED；数据库

而后：尝试启动oracle数据库：oracle

[root@MyYun ~]# su - oracle
Last login: Thu Jul 18 22:01:58 CST 2019 on pts/1
[oracle@MyYun  ~]$ sqlplus / as sysdba
SQL> startup nomount;
ORACLE instance started.

Total System Global Area 1068937216 bytes
Fixed Size          2220200 bytes
Variable Size         394268504 bytes
Database Buffers      666894336 bytes
Redo Buffers            5554176 bytes
SQL> select status from v$instance;

STATUS
------------
STARTED

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

执行上代码块的操做后，在本地使用第三方连接工具连接Oracle数据库时就出现了ORA-12528错误。app

解决办法以下：

相继执行以下命令：工具

[oracle@MyYun~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on Thu Jul 18 22:55:06 2019

Copyright (c) 1982, 2009, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> shutdown;
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux-x86_64 Error: 2: No such file or directory
SQL> startup
ORACLE instance started.

Total System Global Area 1068937216 bytes
Fixed Size          2220200 bytes
Variable Size         394268504 bytes
Database Buffers      666894336 bytes
Redo Buffers            5554176 bytes
Database mounted.
exDatabase opened.
SQL> exit;
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

命令解释：
code

shutdown命令：至关于如下三个命令

normal;
shutdown immediate;
shutdown abort;

startup命令：等于如下三个命令

startup nomount;
alter database mount;
alter database open;