causes of pvcs

)) (Connect_data = (service_name = Oracle) ) ) 4. Cause analysis (refer to Non-original): And also: That 1) host initialization, host name localhost or localhost.localdomain causes the operating system to perform DNS reverse resolution resulting in hostname as Bogon. 2) If Search Localdomain or other DNS servers that do not filter the Bogon are configured in resolv.conf, the host name obtained here takes precedence over the configur

Tags: binary log based primary master server ROM timestamp nbsp default binaryChange master causes Gtid to be lostRecovering from Innobackupex causes Binlog to be pulled from the main standby gtid inconsistent.This type of error cannot be repaired by constructing a null transaction mode.The change master mode is required to point to the next bit of the failed event. Then the bitwise-Point (master_auto_posit

Site service unavailable. What everyone knows later Code that causes IIS to crash Code that causes IIS to crash Code that causes IIS to crash Code that causes IIS to crash Xxx000 ForeColor = "Red" Style = "left: 235px; position: absolute; top: 49px" Width = "259px"> Top: 165px; height: 404px

Mysql backup Big Table problem-mysqldump missing-q Parameter causes MySQL to be killed by oom? One day early morning, I received a db Fault Warning and went to the machine for check. mysql was restarted by the myqld daemon. Check varlogmessages and the recent dmesg and find that the mysql process is killed by oom. The following is an excerpt from the information :? [13045702.638964] kthreadi Mysql backup Big Table problem-mysqldump missing-q Parameter

Insomnia will bring you endless trouble, want to sleep when sleep, should not sleep when sleepy, so it belongs to black and white upside down, on life and work has a relatively large impact. So what are the causes of insomnia? Many of the patients who are suffering from insomnia are well aware of the reasons for this and have made detailed answers to the professionals.The common cause of insomnia:1. Bad habits of livingBecause of personal reasons, lif

Exchange certificate error causes local mailbox users to not accept Office365 user messageswe described the localExchangewith theOffice365Hybrid deployment, after a hybrid deployment, due to the localExchangeserver certificate expires, updateExchangethe server certificate causesOffice365mailbox users cannot be associated with a localExchangeMailbox User Communication(Send mail), localExchangeMailbox users cannot accept theOffice365Email users ' mail,

In daily life, occasionally encounter a sudden power outage or computer crashes, we are editing the Word document or Excel file information is missing. In addition to setting up auto-save and self-admission unlucky, there is a way to find these unsaved files, described below.Retrieve a document that suddenly loses power before saving 1As the picture below shows the directory, in this directory there are Excel, Word folder, we did not have time to save the file is stored in this folder.650) t

Address: http://dev2dev.bea.com/pub/a/2005/06/memory_leaks.htmlEliminate memory leaks --Author: Staffan Larsen Summary Although Java Virtual Machine (JVM) and its garbage collector (Garbage Collector, GC) are responsible for managing most of the memory tasks, memory leakage may still occur in Java software programs. In fact, this is a common problem in large projects. The first step to avoid Memory leakage is to figure out how it happened. This article describes some common memory leak traps for

Common Causes of Connection reset by peer:1) when the number of concurrent connections on the server exceeds its capacity, the server closes some of the connections;If you know that the number of concurrent clients connecting to the server does not exceed the server capacity, it may be a virus or Trojan, causing network traffic exceptions. You can use netstat-An to view network connections.2) The client closes the browser, and the server is still send

People who use the Windows operating system sometimes experience such an error message: 0X???????? Directive refers to the 0x00000000 memory, which cannot be written ", and then the application is closed. If you go to ask some "master", the answer is often "windows is so unstable" such as indignation and disdain. In fact, this error is not necessarily caused by Windows instability. This article is to briefly analyze the common causes of this error. F

Data security warning: fdisk causes the ASM disk data loss solution. For more information, see. Data security warning: fdisk causes the ASM disk data loss solution. For more information, see. Data security warning: fdisk causes the ASM disk data loss solution. For more information, see. Yesterday, a friend encountered a database fault case:11.2.0.3 the d

Oracle finds the SQL statement that causes the wait according to v $ wait_chains Oracle finds the SQL statement that causes the wait according to v $ wait_chains Functions of several views, from official documentsV $ sqltextV $ SQLTEXTDisplays the text of SQL statements belonging to shared SQL cursors in the SGA.V $ SESSIONV $ SESSIONDisplays session information for each current session.V $ wait_chains

Source: WPF Popup control causes blocked content to not flushwhy a WPF Popup control causes blocked content to not refreshZhou BanhuiToday when writing a WPF control with the popup control, it is very depressing: when the popup is closed, the original part of the interface is blocked by the popup is not refreshed, to manually refresh (such as the maximum minimum window), even the online legend of this metho

For IIS administrators, the CPU usage of web servers is usually 100%. The following is a summary of my daily work and some solutions, which are mainly used to analyze w3wp.exe (IIS) some reasons and solutions for CPU usage of 100% may help you Description of w3wp.exe: full name, IIS application pool process. W3wp.exe is part of the IIS tool. Worker. This process is used to allocate a large amount of system resources. The common causes of w3wp.exe (I

Causes of SD card data loss Why are SD card files lost? Is the opening method incorrect? Or cannot the SD card be read by the computer? In fact, there are various factors that may cause SD card data loss. Only by figuring out the status and causes can we better solve the problem, including: Factor 1: plug-in failure If the SD card cannot be read, first check whether the card reader interface and computer i

Causes of session loss and Solutions IIS6 under win2003 server is set by default. After more than 20 hours, every worker process running in the default application pool is automatically reclaimed, resulting in the loss of session stored in the process.Because session, application, and other data are stored in the worker process that runs the web application by default, if the worker process is recycled, it will cause loss.Solution:Modify the

Abstract: This blog mainly describes the possible causes and solutions of Java. Lang. outofmemoryerror: permgenspace. Permgen space is short for permanent generationspace, which indicates the permanent storage area of the memory. This memory is mainly used by JVM to store class and meta information, when a class is loaded, it will be placed in permgenspace, which is different from the heap region where the class instance is stored. GC (garbage collect

Deferred_segment_creation causes EXP-00003New features in version 11G. To avoid wasting resources, creating a non-partitioned empty table will delay the creation of segment, including the table-related objects LOBS and indexes.Explanation of official documentation: DEFERRED_SEGMENT_CREATIONspecifies the semantics of deferred segment creation. if set totrue, then segments for non-partitioned tables and their dependent objects (LOBs, indexes) will not b

Faults in computer networks are inevitable. Network fault diagnosis is an important task in network management. Generally, when the network encounters a connectivity fault such as information failure and cannot browse the Web, the fault phenomenon is clear and easy to observe and locate the fault point. It is not difficult to solve such a fault. However, the biggest headache is that the network is accessible, but the network speed slows down. When faced with such "soft" faults for the first time

limitations of this method are: 1) It is difficult to know the SQL Execution time in the V $ SQL view, and it is difficult to confirm that the specific SQL statement causes errors. 2) the SQL statement that causes the problem is probably out of age. 3. Generate the awr and statspack reports when an error occurs. Find the SQL statements from the SQL ordered by Reads section in the report. This method is les