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虚拟化云计算,系统,DBA运维虚拟化云计算,系统,DBA首页系统运维Shell编程应用服务数据库DBA云计算存储监控安全网络安全行业新闻搜索日志分类记录系统运维Shell编程应用服务数据库DBA云计算存储监控安全网络安全业内新闻VPN免流技术服务系统导航 首页注册登陆友情链接qomo-Linux人社区 最新文章12170问题引起的Oracle无法登陆问题解决办法Changing Network Kernel SettingsHow To: Network / TCP / UDP Tuningzabbix3.2添加日志文件监控Centos6.5 源码编译安装zabbix3.2,对接oralce11g数据库Zabbix 日志文件监控(官网原文)zabbix agent protocol说明RHEL6.5/Centos6.5 报错:fork: Cannot allocate memoryOracle闪回恢复区空间管理:Deleted Oracle managed fileweblogic10.3应用报错:java.lang.IllegalStateException: Cannot resize buffer - 299 bytes have already been written最新评论 ICKY 说非常感谢 解决了我的问题 admin 说ipsec verify 检查是正常的。所以安装软件也应是正常的。 小白 说请问哪里有问题?">您好,我在云免服务器下用centos7.0 一键安装的。但是用苹果手机下连接不上服务器。请问哪里有问题? lionel 说做了,还是提示依旧,没有解决问题,还有其他地方要改吗? admin 说以前还真没注意not 日志同步发布到QQ微博 关注我吧 本站用于记录日常工作内容,虚拟化云计算,数据库DBA,网络与安全。 0 12170问题引起的Oracle无法登陆问题解决办法 发表者:admin分类:数据库DBA2017-04-02 12:34:48 阅读[144] 服务器每隔一段时间后就出现无法登陆的问题。重启数据库后,问题解决,但这并不是长久之计。查看日志文件:D:\app\administrator\diag\rdbms\hzdb\hzdb\alert的alert.log,出现大量的重复错误信息,如下所示:Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=172.16.206.83)(PORT=2067)) TNS-00505: 操作超时 nt secondary err code: 60 nt OS err code: 0 ns secondary err code: 12560 nt main err code: 505 TNS-12535: TNS: 操作超时 Tracing not turned on. Tns error struct:ns main err code: 12535 VERSION INFORMATION: TNS for 32-bit Windows: Version 11.1.0.7.0 - Production Oracle Bequeath NTProtocol Adapter for 32-bit Windows: Version 11.1.0.7.0 - Production Windows NT TCP/IP NT ProtocolAdapter for 32-bit Windows: Version 11.1.0.7.0 - Production Fatal NI connect error 12170.为什么会出现这样的情况呢?网上搜索后得知,在Oracle11G中,有这样两个参数SQLNET.INBOUND_CONNECT_TIMEOUT 和INBOUND_CONNECT_TIMEOUT_list... Tags: [阅读全文...] 0 Changing Network Kernel Settings 发表者:admin分类:系统运维2017-04-01 13:30:36 阅读[83] 10.2. Changing Network Kernel SettingsOracle now uses User Datagram Protocol (UDP) as the default protocol on Linux for interprocess communication, such as cache fusion buffer transfers between the instances. However, starting with Oracle 10g network settings should be adjusted for standalone databases as well.Oracle recommends the default and maximum send buffer size (SO_SNDBUF socket option) and receive buffer size (SO_RCVBUF socket option) to be set to 256 KB. The receive buffers are used by TCP and UDP to hold received data until it is read by the application. The receive buffer cannot overflow because the peer is not allowed to send data beyond the buffer size window. This means that datagrams will be discarded if they do not fit in the socket receive buffer. This could cause the sender to overwhelm the receiver.The default and maximum window size can be changed in the proc file system without reboot:The default setting in bytes of the socket receive buffer:# sysctl -w net.c... Tags: [阅读全文...] 0 How To: Network / TCP / UDP Tuning 发表者:admin分类:系统运维2017-04-01 13:24:34 阅读[67] How To: Network / TCP / UDP TuningThis is a very basic step by step description of how to improve the performancenetworking (TCP & UDP) on Linux 2.4
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