ORA-00020错误思考
今天例行检查一个历史库DB,发现alert.log里面有一条ldquo;ORA-00020: maximum number of processes (150) exceededrdquo;,这
今天例行检查一个历史库DB,发现alert.log里面有一条“ORA-00020: maximum number of processes (150) exceeded”,这是一个低级且常见的错误!
主要原因:DB进程数目超过限制大小
因为DB是历史库数据,2011年在设置时考虑到安全,才设置150为最大,随后发邮件给开发,做再次提醒,除了应用访问外,,禁止TOAD,PLSQL等直连数据库
补充资料
1:Oracle官方文档解释
2.正常DB该参数如果设置小了,有可能程序用户访问DB时会在登录时报如下报错:“ORA-12537: TNS:connection closed”
Oracle 11g 在RedHat Linux 5.8_x64平台的安装手册
Linux-6-64下安装Oracle 12C笔记
在CentOS 6.4下安装Oracle 11gR2(x64)
Oracle 11gR2 在VMWare虚拟机中安装步骤
Debian 下 安装 Oracle 11g XE R2
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