zabbix 利用自定义键值监控(自动发现)表空间
<p>之前通过orabbix可以监控oracle很多对象,具体可以参考:</p><p>http://blog.itpub.net/24486203/viewspace-1788791/</p><p>1.在被监控端创建脚本,此脚本用于获取表空间及空间使用信息,此脚本由oracle用户下创建(这里我将system及sysaux 监控去除掉了).这个zabbix用户为之前orabbix所创建用户</p><p>[roo...
深入理解Oracle调试事件:10046事件详解
之前也写过一篇10046的文章:10046简介 今天,Think想和大家一起共同深入去理解一下Oracle的这些调试事件 10046事件是SQL_TRACE的扩展,被戏称为"吃了兴奋剂的SQL_TRACE" 有效的追踪级别: ① 0级:SQL_TRACE=FASLE ② 1级:SQL_TRA
Oracle 12c中db_file_multiblock_read_count 参数引发的性能问题
最近有一套系统一条简单的语句执行很慢:create table xxx as select * from xxx;做了简单的10046如下:SQL ID: 479aa0z9yttdr Plan Hash: 2897757325create table CRE000_HR_DMcall count cpu elapsed disk query &...
CentOS6环境下编译部署LAMP平台
本文描述在Linux环境下搭建LAMP平台,所用软件均为最新版,CentOS6.0+Apache2.2.21+MySQL5.5.17+PHP5.3.8。 L部分就不用说了吧,下面按照AMP的顺序挨个操作。 0、准备工作 检查依赖包是否安装: # rpm -...
Mysql 参数
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DBCA建库问题处理之-无法创建RAC实例
在安装完RAC11.2.0.4,并打上PSU后,在通过DBCA创建数据库实例是出现诡异现象:弹出来的框为单实例创建,二并非RAC实例。反复试了几次都是同样的问题,检查安装无问题。在metalink上查看了下,问题原因很多,同事通过sqlplus连接空实例测试出现如下报错:[oracle@zderp2vprd01 cfgtoollogs]$ sqlplus / as sysdbaSQL*...
AIX7.1下oracle RAC PSU 11.2.0.4.8 Patch 失败
Using configuration parameter file: /oracle/app/11.2.0/grid_1/crs/install/crsconfig_paramsStopping CRS...Stopped CRS successfullypatch /osbackup/soft/21523375/21352635 apply successful for home /oracle/app/11.2.0/grid_1 patch /osbackup/soft/21523375/21352649 apply fail...
RAC性能分析gc buffer busy acquire 等待事件
概述---------------------gc buffer busy是RAC数据库中常见的等待事件,11g开始gc buffer busy分为gc buffer busy acquire和gc buffer busy release。gc buffer busy acquire是当session#1尝试请求访问远程实例(remote instance) buffer,但是在session#1之前已经有相同实例上另外一个session#2请...
【Python Oracle】使用cx_Oracle 连接oracle的简单介绍
连接数据库的几种方式:语法:cx_Oracle.connect('username','pwd','IP/HOSTNAME:PORT/TNSNAME')import cx_Oracledb1=cx_Oracle.connect('yang','yang','127.0.0.1:1523/yangdb')db2=cx_Oracle.connect('yang/yang@1...
IPC Send timeout故障现象
申明:本文转载自:http://czmmiao.iteye.com/blog/1763055IPC Send timeout故障现象RAC 数据库上比较常见的一种问题就是“IPC Send timeout”。数据库Alert log中出现了“IPC Send timeout”之后,经常会伴随着ora-29740 或者 "Waiting for clusterware split-brain resolution"等,数据库实例会因此异常终止...
Creating a Physical Standby of a CDB
You can create a physical standby of a multitenant container database (CDB) just as you can create a physical standby of a regular primary database. The following are some of the behavioral differences to be aware of when you create and use a physical standby of a CDB:创建一个多租户的CDB环境...
检查12C环境下可在PDB直接修改的参数
SQL> SELECT NAME,VALUE,DISPLAY_VALUE,ISPDB_MODIFIABLE FROM v$parameter WHERE ISPDB_MODIFIABLE='TRUE';NAMEVALUEDISPLAY_VALUEISPDBsessions472...
DataGuard环境进程信息追踪
The Oracle database uses the LOG_ARCHIVE_TRACE initialization parameter to enable and control the generation of comprehensive trace information for log archiving and redo transport activity.The additional tracing that is output when LOG_ARCHIVE_TRACE is set to a non-z...
Oracle 12C RAC DataGuard实战
Oracle 12C rac DataGuard环境部署。
Oracle 12C dgbroker 配置
关于DGbroker的配置网上有太多资料了,此处在不做详细介绍配置,贴一片metalink上的文章共大家参考学习。1. Prerequisits,Start the Dataguard broker DMON process. ----------启动dg_brokerOn Primary and Standby,SQL> alter system set dg_broker_start=true sid='*'; 2. Connect to DGMG...
Mysql 安装包命名规范
Standard distributions are available as compressed tar files, Zip archives, or RPM packages. Distribution files have names of the form mysql-VERSION.tar.gz, mysql-VERSION.zip, or mysql-VERSION.rpm, where VERSION is a number like 5.7.14. File names for source d...
start_udev导致监听自动停止问题处理
APPLIES TO:Oracle Database - Enterprise Edition - Version 11.2.0.3 and laterLinux x86-64SYMPTOMSDynamically added new disks to storage using udev rules(as per the docs note 414897.1, 1528148.1, 371814.1 etc).During start_udev, udev has deleted the public network interface a...
CRS-4046: Invalid Oracle Clusterware configuration
在AIX6.1下安装ORACLE11.2.0.4 RAC的时候,在节点2执行root.sh报错如下:[root@oratest02:/oracle/]#sh /oracle/app/11.2.0/grid_1/root.shPerforming root user operation for Oracle 11g The following environment variables are set as: ORACLE_OWNER= grid ORACLE_HOME= ...
关于12C RAC 上的top5 问题:enq: IV - contention
enq: IV - contention9294.14.37.4OtherIn this DocumentSymptomsCauseSolutionReference...
WAS主机名变更
[root@jttmsvura02 bin]# ./wsadmin.sh -conntpe NONE -lang jythonWASX7209I: 浣跨. SOAP 杩..?ㄨ??ュ.?.. jttmsvura02CellManager01 涓..杩.??.mgr?.?杩.??.被anagerWASX7411W: 蹇界.浠ヤ??.??.?.」锛.-conntpe, NONE]WASX7031I: 瑕..?.府?╋?璇疯??ワ??.rint Help.help()?wsadmin>AdminTask.changeHostName('[inter...