一次ora-12528 故障的解决办法

一次ora-12528 故障的解决办法
2010-09-28 15:03

在clinet连接数据库时为提示:
ora-12528 : message 12528 not found; product=RDBMS ; facility=ora

解决办法:

(-):

先连接到实例t1cdp1,然后shutdown abort,接着startup nomount(忘记了接下来是否执行了alter database mount),此时就退出了登陆,再次尝试登陆的时候就报错:
SQL> conn iat/welcome@t1cdp1
ERROR:
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
1. cmd下面输入lsnrctl,查看当前实例所有监听器的状态
C:\>lsnrctl
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 20-JUN-2010 22:49:13
Copyright (c) 1991, 2006, Oracle. All rights reserved.
Welcome to LSNRCTL, type "help" for information.
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.2.0.3.0 - Production
Start Date                30-APR-2010 14:37:44
Uptime                    51 days 8 hr. 11 min. 32 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   C:\oracle\product\10.2.0\db_1\network\admin\listener.ora
Listener Log File         C:\oracle\product\10.2.0\db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=SupplyChainRel3.corp.walmart.com)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "T1CDP1_XPT" has 1 instance(s).
Instance "t1cdp1", status BLOCKED, has 1 handler(s) for this service...
Service "T1FMSP2XDB" has 1 instance(s).
Instance "t1fmsp2", status READY, has 1 handler(s) for this service...
Service "T1FMSP2_XPT" has 1 instance(s).
Instance "t1fmsp2", status READY, has 1 handler(s) for this service...
Service "T1PINVS1XDB" has 1 instance(s).
Instance "t1pinvs1", status READY, has 1 handler(s) for this service...
Service "T1PINVS1_XPT" has 1 instance(s).
Instance "t1pinvs1", status READY, has 1 handler(s) for this service...
Service "T1PPROD_XPT" has 1 instance(s).
Instance "t1pprod", status BLOCKED, has 1 handler(s) for this service...
Service "t1cdp1" has 1 instance(s).
Instance "t1cdp1", status BLOCKED, has 1 handler(s) for this service...
Service "t1fmsp2" has 1 instance(s).
Instance "t1fmsp2", status READY, has 1 handler(s) for this service...
Service "t1pinvs1" has 1 instance(s).
Instance "t1pinvs1", status READY, has 1 handler(s) for this service...
Service "t1pprod" has 1 instance(s).
Instance "t1pprod", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
可以发现instance t1cdp1是blocked的状态(不知道 T1CDP1_XPT这个后缀是什么意思),
此时可以确定是监听器出错了。
2. 以sysdba身份登录 sqlplus \ as sysdba
查看发现当前状态为nomount(找到问题根源了).接下来加载 数据库
alter dababase mount;
alter database open;
3. 此时再次尝试连接数据库,成功登陆
SQL> conn iat/welcome@t1cdp1
Connected.

小结:其实碰到这种错误,可以直接通过sqlplus \ as sysdba进入查看instance状态,而是用lsnrctl则是为了进一步验证而已。

方法(二)

关闭数据数据库,重新启动数据库即可。重新启动监听。

ORA-12541: TNS: 无监听程序 是 Oracle 数据库中常见的错误之一,表示客户端尝试连接到数据库服务器时,未能找到正在运行的 TNS 监听程序 (TNS Listener)。以下是可能导致此问题的原因及对应的解决办法: ### 原因分析与解决方案 #### 1. **监听器未启动** - **原因**: 当您安装完 Oracle 或者重启服务器后,默认情况下监听服务可能并未自动开启。 - **解决**: 打开命令行工具并输入以下指令检查监听状态以及手动启动它: ```bash lsnrctl status # 检查当前监听是否正常工作 lsnlct start # 启动监听器 ``` #### 2. **tnsnames.ora 配置文件配置有误** - **原因**: 客户端通过 `tnsnames.ora` 文件获取连接信息,如果该文件中的条目拼写错误、地址不匹配等均会引发此类故障- **解决**: 确保您的 tnsnames.ora 文件路径下包含正确的主机名/IP 地址和服务名称。例如, ``` MYDB = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = your_server_ip_or_hostname)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = my_service_name) ) ) ``` #### 3. **防火墙阻止了通信** - **原因**: 如果服务器上的防火墙启用了并且拦截了默认的Oracle侦听端口(通常是1521),那么外部设备就无法访问这个端口号提供的服务。 - **解决**: 修改系统防火墙规则允许TCP流量通过指定端口(如1521),或者暂时关闭防火墙测试连通情况。 #### 4. **listener.ora 中设置不当** - **原因**: listener.ora 这个文件定义了哪些网络协议和IP地址能够接受请求。当里面的值不对,则可能会导致找不到合适的监听进程处理入站需求。 - **解决**: 核实 listener.ora 文件内容,并保证类似下面这样的基础结构存在: ``` LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) ) ) SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (GLOBAL_DBNAME = mydb.world) (ORACLE_HOME = /u01/app/oracle/product/19.0/dbhome_1) (SID_NAME = my_sid_instance) ) ) ``` 完成上述所有步骤之后再试一次连接操作看看问题是不是已经解决了! ---
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