fault handling

Objective This article is mainly to introduce the Java Virtual machine fault handling tools, the article mentioned that these tools include: Name Main role JPs JVM process Status Tool, which displays all hotspot

Today I found the database connection is very slow, even can not connect, want me to check to see#su - oracle$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 17-MAY-2018 12:29:11Copyright (c) 1991, 2009, Oracle. All rights

Just work in the morning, as usual, supporting the computer support, open the computer, there is a war film inside, back to the position, set up machine guns, ready to meet the enemy of the ritual sense. Everything is so familiar, in the start test

The process of handling master-slave failures is documented here: Fault 1,error_code:1197 (max_binlog_cache_size) Database version: 5.7.9Error message:[ERROR] Slave SQL for Channel ": Worker 1 failed executing transaction ' bea4612c-482

Remember once Oracle Clusterware installation failure handling1. Environmentcat /etc/5.8 (tikanga) Kernel \ r on an \m2. Description of the problem during the installation of the RAC, the nodes were shut down after successfully installing the grid (

A developer directly on the database server to do the delete table operating system, from the time of the peak operation, resulting in a long time to execute unresponsive, and then shut down the Sqlplus client, run the DELETE statement again,

Users call to say that the following schools are unable to surf the internet! This thing is a bit big, telnet to the user's security gateway and discover that the security gateway can log on and run normally. But the connection between the security

Recently an office staff called, said he has two pages can not open, it is his work must use, please me to deal with.Can not affect the work AH. At a glance, it is really not open. is the train ticket 12306 purchase ticket official website, can

" problem ":The application system cannot connect to the database and cannot read the shared disk that accesses the repository"Cause":DB server ha cluster failure, cluster failed to start"Contingency plan":1. Try to restore the cluster;2. Establish

Suddenly, the personal website crashed! Believe that this error as operations should be clear, is the database downtime.Database I use MySQL 5.1.63, on the machine to view the error log:171010 10:11:01 Mysqld_safe starting mysqld daemon with

First, describeDB version: 12.1.0.2System version: 7.0Second, the processing process1, error, the database starts on the instance will be abnormally terminatedORA-00312: online log 3 thread 1: ‘+DATADG/ORCLDG/ONLINELOG/group_3.403.962961193‘ORA-00312

2 cases of MySQL Server 5.6 Fault HandlingNovember 4, 2014, Mysql-server failed after upgrading from 5.1 to 5.6 on 117.79.133.132 server############################################################################### Accident

A general approach to the failure of a Linux systemError Messages---> Review log files---> Analyze location problems---> Resolve issues.Reasons and solutions for the failure of Linux system to startThere are many reasons why the system cannot be

One of the most important disruptive decisions that Java developers can make is how to use the Java exception model. Java exceptions have always been the targets of many disputes in the community. Someone argues that the exception check in Java is a

In an object-oriented program, the largest switch/case statement I've ever seen has more than 20 conditions. During the run, the code module executes all the conditions each time. Each condition is responsible for creating a new object that is used

1: TNS-12537, TNS-12560, TNS-00507 ProcessingThe following error is reported when the listener is started. Generally, the information about the loopback address in the/etc/hosts file is deleted by mistake.[Oracle @ jason admin] $ lsnrctl

Error: SQLgt; connsystemtest @ testERROR: ORA-01034: OraclenotavailableORA-27101: sharedmemoryrealmdoesnotexis Error: SQLgt; conn system/test @ testERROR: ORA-01034: Oracle not availableORA-27101: shared memory realm does not exis The error is

I. Mechanism analysis based on the code logic, analyze the various responsibility chains that arise from the problem. Rigorously analyze and troubleshoot each step of the chain of responsibility. Issue confirmation by collecting code, logs, and

Background:Just a netizen asked the ORA-30009 error, the database version is 10.2.0.5, the operating system version is RedHat 4; then I took into account the hardware and buffer constraints, the verification, the details are as follows: Error

One instance of RAC is found to be abnormal. view the spfile SQL> show parameter spfile NAME TYPE VALUE ----------------------------------------------------------------------------- Spfile string The result value does not contain spfile and is not