how to calculate downtime

Here we will discuss the steps to minimize Oracle downtime. Various types of downtime-planned or unplanned-always happen. a dba should have the correct backup policy so that the database can be restored faster when a problem occurs. The following are hypothetical backup policies and database operating conditions: The control file is an image. The database runs in archivelog mode. Cold backup is performed ev

Zookeeper Analog Monitoring Service node downtime /*** Analog Monitoring Service node outage * thought:* node is on line, create a node under/watch, and then monitor the node Log event types to determine if nodes are down * @throws Exception*/publicstaticvoid Watch () throwsexception{while (true) {finalzookeeper zkclient=newzookeeper ("192.168.1.231,192.168.1.232,192.168.1.233",50000, NULL); stringpath=zkclient.create ("/watch/", "". GetBytes (), zood

Recently, a Data transformation engine service was required to be written in the project, synchronizing data every 5 minutes. The implementation is a scheduledexecutorservice and a threadpoolexecutor thread pool that is initialized after the engine server is started. Schduel executor every 5 minutes, each tranform in the datatransformlist is added to the thread pool to run. Each data converter is responsible for converting a set of database data. There is a service restart during execution and a

More irritable in the near future. The system is prone to downtime. The WebLogic console prints such as the following:# Afatal error has been detected by the Java Runtime environment:## SIGSEGV (0XB) at pc=0x0000003373c89afc,pid=21500, tid=139781136643840## JREVERSION:6.0_45-B06# Javavm:java HotSpot (TM) 64-bit Server VM (20.45-b01 mixed mode linux-amd64compressed oops)#Problematic Frame:# C [LIBC.SO.6+0X89AFC] unsigned LONG+0X2DC## anerror report fil

1. When the database is down, (Ps-ef | grep smon) First consider whether it is a RAC or not, which affects the normal build environment. Determine the approximate repair time. if it is a RAC, then enter the action command on the other database.Find the static parameter file to start. 2. Static parameter files can also be found in the local outage database system. In general the location is CD $ORACLE _home/dbs find the static parameter file (you can refer to an instance on another instance Ps-ef

ended -------------------------------------------------------------------------------------------------------------- --------------------------------------------------------- Analyze the above log information: --------------------------------------------------------------------------------------- 127029889 127029978 , 127029985 ------- -------------------------------------------------------------------------------- the thing that causes a database outage is

ranking, it will be the first time to eliminate the possibility of downtime, and the failure to access. Webmaster Comrades, not easy ah. In the money can not afford to network management, it must have a pair of discerning eyes, from the nuances, to reprimand our website! Visit a website, basically 4 steps. Step 1. The client issues a domain name request. In the address bar of the browser, type the address of the domain name, such as xxx.com. Step 2.

The ORACLE tutorial is to optimize the Oracle downtime and database recovery. Here we will discuss the steps to minimize Oracle downtime. Various types of downtime-planned or unplanned-always happen. a dba should have the correct backup policy so that the database can be restored faster when a problem occurs.The following are hypothetical backup policies and data

It is usually easy to upgrade the hardware, but there is no doubt that upgrading the database has a painful experience for everyone. An experienced OracleDBA mainly focuses on the successful completion of the upgrade and the possible downtime. Success does not only mean that the upgrade process is completed normally, but more importantly, production applications can run in the database after upgrade without failure. Ben It is usually easy to upgrade t

Analysis of database downtime caused by ORA-04031 BackgroundOn February 5, the user's database went down unexpectedly. After restarting the server, the Oracle database went back to normal. The user hoped to troubleshoot the problem and avoid another downtime accident, troubleshooting of such unexpected downtime is a common case of remote processing. Although ther

The Oracle tutorial you are looking at is optimizing Oracle downtime and database recovery. 　 The steps to minimize Oracle downtime are discussed here. All forms of downtime-planned or unplanned-always occur,A DBA should have the correct backup strategy so that it can be recovered faster if there is a problem with the database.The following are the assumptions o

the old server before migration. If the new server you are trying to migrate is running an alternative service package level, you may encounter many problems. Take Exchange Server as an example. The service package level affects your ability to load the mailbox database. Lab testing. This is the most critical part, testing new hardware and migration processes in a lab environment. I usually create a separate lab, and then rebuild backups on the Regional Controller, infrastructure server (DNS, D

This is a creation in Article, where the information may have evolved or changed. 0 downtime upgrades are almost standard for modern web services, and the implementation principle is not complicated ... blablabla ... (from the file descriptor, omit 10,000 words). It is now confirmed that Go can also implement a zero-downtime upgrade TCP service or a shorter term-hot update. Original: Zero

Facebook experienced large-scale downtime on Thursday, with the affected users covering the world. Facebook went down for about 40 minutes. Twitter users complained about Facebook's downtime on the social networking site. When a user logs on to the Facebook website, an error message is displayed, saying: "Sorry, something went wrong ...... We are trying to fix this problem ." Facebook went down for about

Tomcat downtime analysis and thread Handling Methods During work, we often encounter various inexplicable errors caused by the failure to stop the threads created during Tomcat shutdown. This article will sort out the Tomcat shutdown process, discuss the causes of these errors and propose two feasible solutions. Tomcat downtime Analysis A Tomcat process is essentially a JVM process. Its internal structure i

server downtime caused by K, Hope to find a solution. Site is K background: http://shop.7979la.com/, local wine network of a two-level domain name, before the weight of the site has been done 3, the site performance is better, July 29 morning, the server has a half hour problem: downtime, in the technical staff quickly resolved, the server quickly restore stability, But the site that night was K home, the

No downtime xtrabackup creating slave nodesMaster: 10.1.1.17: 3306 slave: 10.1.1.18: 3307slave node configure the Basic Environment: Create a mysql user, install the same version of mysql software, xtrabackup software package, and create a directory, configure Script 1 and create a full backup: master [mysql@master1 backup]$ innobackupex --defaults-file=/data/mysqldata/3306/my.cnf --user=xtrabk --password='onlybackup' /backup/backup_full/ 2. Copy and

. /Office] Closing spring root WebApplicationContext2011-04-26 18:05:17 info [apusic. web. office. /Office] Shutting Down log4j2011-04-26 18:05:17 info [apusic. application. office] stopped.2011-04-26 18:05:18 info [apusic. web. office. /Office] initializing spring root WebApplicationContext2011-04-26 18:05:28 error [con. err] exception in thread 'autodeployer' 18:05:28 error [con. err] Java. lang. outofmemoryerror: permgen Space It seems that an exception occurred when the application was resta

When the hbase cluster is running, the regionserver goes down. cause: If the network is disconnected and the heartbeat fails to be sent, try to connect to another zookeeper server. (Zookeeper will try to connect to all other servers), the Network is restored, the connection is successful,However, the session has expired.Therefore, the zookeeper client is closed. Of course, the hmaster will also be interrupted due to the expiration and invalidation information of zookeeper; Reasons for regionse

Last night, Apple began to send an email to developers informing them that the Developer Website (Developer Website Center) will be shut down for short regular maintenance at six o'clock P.M. January 1, August 17 (Pacific time. Apple usually did not remind developers that it would maintain the website of the Development Center. This time, Apple sent a high-profile email to notify developers of website maintenance, some people think that this is because the developer website on the 18 th of last