diagnose wifi problems

interface, click the menu item "Memory-->tale Heap Snapshot", as shown in the popup window:Find our test program and select it, then click on the "Dump GC Heap" button, then click the "CLose" button after a few seconds, and a ". Gcdump" file will be generated at the end.Double-click to open the "windowsformsapplication1.gcdump" window, which appears as follows:The prefview accurately diagnoses that the static variables occupies memory.Use two heap dumps to see how the object's memory is changin

This article introduces how to diagnose node restart problems in the RAC environment. Applicable to 10gr2 and 11gr1. First, we will introduce the CRS process that can cause node restart.1. ocssd: its main functions are node monitoring and group management. It is one of the core processes of CRS. Node monitoring is used to monitor the health of nodes in a cluster. It is implemented through network heartbeat

Commonly used logs for SQL Server diagnosis: (1) Windows event log (2) SQLSERVERErrorLog1. Windows event log EventLog is used as a service program enabled and managed by Windows, windows records the startup, normal shutdown, and abnormal shutdown of the SQLSERVER service in its system log systemlog. Common logs used to diagnose SQLSERVER problems include: (1) Windows Event Log (2) SQLSERVER ErrorLog 1. Wind

Diagnose network problems in Linux Kernel A few weeks ago, we began to pay attention to the great changes in the network traffic of servers that track API in Washington. In a fairly stable daily model, we start to see 300-400 Mbps peak traffic, but our legitimate traffic (events and Manual updates) remains unchanged. Suddenly, our network traffic began to soar as crazy. Finding a false traffic source is im

The following articles mainly introduce several faster methods to diagnose common Oracle problems. The following describes the specific solution of Oracle troubleshooting methods, I hope it will be helpful for your future study. The following is a detailed description of the article. I hope you can learn from it. 1 TNS-12154 Error or ORA-12154 Feature: SQL * NET does not find a connection string or Alias

=1395736859521650Krsd_get_primary_connect_string:found PCs ' by Fal_server lookup So this 10046 trace, which tells us very clearly that it is getting a connection string from the parameter fal_server.At this point, connect to the repository, view the parameter fal_server, its value is indeed empty:Sql> Show parameter FalNAME TYPE VALUE------------------------------------ ----------- ------------------------------Fal_client stringFal_server stringHere we get the information we want through Rman D

This article introduces how to diagnose node restart problems in the RAC environment. Applicable to 10gR2 and 11gR1. First, we will introduce the CRS process that can cause node restart. 1. ocssd: This article introduces how to diagnose node restart problems in the RAC environment. Applicable to 10gR2 and 11gR1. First,

This article introduces how to diagnose node restart problems in the RAC environment. Applicable to 10gR2 and 11gR1.First, we will introduce the CRS process that can cause node restart.1. ocssd: its main functions are Node Monitoring and Group Management. It is one of the core processes of CRS. Node monitoring is used to monitor the health of nodes in a cluster. It is implemented through network heartbeat a

Commonly used logs for SQL Server diagnosis: (1) Windows event log (2) SQLSERVERErrorLog1. Windows event log EventLog is used as a service program enabled and managed by Windows, windows records the startup, normal shutdown, and abnormal shutdown of the SQLSERVER service in its system log systemlog. Common logs used to diagnose SQLSERVER problems include: (1) Windows Event Log (2) SQLSERVER ErrorLog 1. Wind

Original Blog Address: http://huoding.com/2015/10/16/474Early in the year, if you know there is a strace command, it is very cow, and now everyone basically know strace, if you encounter performance problems to help others, ten to one will suggest you use strace hang up to see, but when you hang up, look at the full screen tumbling characters, but nine out of ten can not see why. In a simple case, this article shows you some of the routines used to

In general, when performance problems are detected, we will collect AWR reports covering the time period in which the problem occurred-but it is best to collect AWR reports covering only one hour-if In general, when performance problems are detected, we will collect AWR reports covering the time period in which the problem occurred-but it is best to collect AWR reports covering only one hour-if How to

How to diagnose and solve database problems with high CPU consumption (100%) Link: http://www.eygle.com/archives/2004/10/howto_getsql_which_cost_most_cpu.htmlIn many cases, our servers may experience performance problems with CPU consumption of 100%.Exclude system exceptions. These problems are usually caused

How to Use strace to diagnose problems Early in the year, if you knew there was a strace command, it would be awesome. Now everyone knows about strace. If you encounter performance problems and ask for help, we recommend that you use strace to hook up and see it. However, when you see the characters on the screen, you cannot see the characters on the screen. This

Oracle uses AWR's SQL ordered by Gets and SQL ordered by Reads to diagnose problems I have read many database reports before, and have encountered two serious performance problems recently. They are very representative, so I recorded them. Once, the Oracle process is reported to get the CPU of the database server to 100%. SQL ordered by Gets is used to retrieve d

Starting from oracle11gr1, The dia0 background process starts to collect Hang analysis information and store it in the hanganalysiscache in the memory. It collects local Hang points every 3 seconds. Starting from oracle11gr1, The dia0 background process starts to collect Hang analysis information and store it in the memory's hang analysis cache. It collects local Hang points every 3 seconds. To diagnose the slow running of Oracle, you must first

Preparatory work1, mobile phone has root, online tutorials flying around, here is not explained.2, install the RE manager, used to modify the file.Open the RE manager and locate the/system/build.prop fileEdit File1, long press the file, choose to open with a text editor2, find this line configuration: Ro.securestorage.support=true, will be true, modified to FalseAfter modification:Press the Menu key, select: Save and exit, restart the phone can be resolved on the method can solve

can catch the computer to access HTTPS requestThrough the above two steps can basically locate the network, fiddler, mobile phone equipment, which one of the problems, and then targeted to solve the problemIf it's a fiddler problem, consider two reasons.1) refer to the following tutorial to set up fiddler to see if it resolves. Http://jingyan.baidu.com/article/00a07f38bb4f4682d028dcd2.html2) If it is not resolved, the certificate may not be installed

Hardware: HPCQ60-116TXOS: Ubuntu10.10wifi finally, finally solved! (Linux hardware driver problem! Take the time to change the Mac !) Ubuntu10.10 hardware was basically normal when it was just installed, except for sound card and HDMI problems. After two weeks of use, wifi also fails. I haven't done it for a long time ~~ I spent two months using the network cable, so I couldn't help it. I had to spend one a

Hardware: HP CQ60-116TX OS: Ubuntu 10.10 Wifi is finally solved! (Linux hardware driver problem! Take the time to change the Mac !) Ubuntu10.10 hardware was basically normal when it was just installed, except for sound card and HDMI problems. After two weeks of use, WiFi also fails. I haven't done it for a long time ~~ I spent two months using the network cable,

New technologies help you solve problems with high WiFi costs Are you still worried about your WiFi? Don't worry. Recently, a team of computer scientists and electrical engineers from the University of Washington has developed a very efficient Wi-Fi wireless network technology.What are the main features of new configurations? Researchers at the University of Wa