how to troubleshoot mac

---code--to Chinese (OK) 7, if the above 1~6 operation or can not solve the Chinese problem:Change server operation even if (a different Tom cat is posting or using JBoss release) 8. Provide reference onlyServlet Chinese garbled solve "use filter" If it is not garbled when committing to the server side, it is the problem of MySQL connection string.For example, I use GBK, the connection string is:Jdbc:mysql://localhost:3306/test?autoreconnect=trueamp;useunicode=trueamp;characterencoding=gbkThat'

Tags: BSP address font target Color update left join family TinWhen MySQL builds tables, it sets the character set and collation of the table, usually utf8, but the character set that I used to build the table is UTF8MB4, and the collation is utf8mb4_unicode_ci. Some UTF8MB4 table default collation is Utf8mb4_general_ci, which causes an error to be reported in the case of a union operation:Illegal mix of collationsIn fact, this is a table when the collation of the table is inconsistent, this can

can tell you which is the case). Qcache_not_cached The number of queries that are not appropriate for caching, usually because these queries are not SELECT Statements and are not cached by the cache because of query_cache_type settings, or if the result set exceeds query_cache_ The statement set by the limit variable. Qcache_queries_in_cache The number of SELECT statement bars currently ' registered ' in query_cache Qcache_total_blocks

" are socket files. > Mysql-u root-pERROR 2002 (HY000): Can ' t connect to local MySQL server through socket '/tmp/mysql.sock ' (2)/tmp/mysql.sockThe solution to this error is simple, because/tmp/mysql.sock does not exist, in such a way:>ln-s/var/lib/mysql/mysql. Sock/tmp/mysql. SockFiles that start with "l" are soft link files. Or you can fix it by modifying the/etc/my.cnf file. Successfully solved! ~It's such a problem that has been killing me for so long that the error log makes it invisible.

connection before the number of seconds in this connection to action, that is, if a connection is idle more than the number of seconds set by this option, MySQL will actively disconnect the connection. Modify the operation: Under Linux open/etc/my.cnf, add the following parameters under attribute group mysqld: [Mysqld] interactive_timeout=28800000 wait_timeout=28800000 Open My.ini under Windows, add: [Mysqld] interactive_timeout=28800000 wait_timeout=28800000 Practice has shown that there is n

Label:Computer operating system is WIN10 Chinese version, the newly installed English version of SQL Server 2008, the Pure default installation, did not make any changes.After you install SQL Server 2008, you find that you can only log on by using the default machine name:If you log in with 127.0.0.1, the following error will be reported:After querying the Internet, I found that the named pipes in SQL Server Configuration Manager could solve the problem, but there was no egg ...So began to try t

The MySQL error log shows:Innodb:mmap (137363456 bytes) failed; errno 122016-03-01 01:38:42 13064 [ERROR] Innodb:cannot allocate memory for the buffer pool2016-03-01 01:38:42 13064 [ERROR] Plugin ' InnoDB ' init function returned ERROR.2016-03-01 01:38:42 13064 [ERROR] Plugin ' InnoDB ' registration as a STORAGE ENGINE failed.2016-03-01 01:38:42 13064 [ERROR] unknown/unsupported storage Engine:innodb2016-03-01 01:38:42 13064 [ERROR] AbortingThis is usually caused by low system memory, the soluti

!!! Restart Mysql:service mysql Restart MySQL Database remote Access Setup method1. Modify localhostChange the "host" entry in the "User" table in the "MySQL" database, changing from "localhost" to "%"Mysql>use MySQL;Mysql>update User Set host = '% ' where user = ' root ';Mysql>select host, user from user;Mysql>flush privileges;2. Designated authorizationConnect to the MySQL server from any host using Myuser/mypassword:GRANT all privileges on * * to ' myuser ' @ ' percent ' identifi

active kill This is similar to the reason two, just one person is a MySQL own action Mysql> show global status like ' Com_kill '; +---------------+-------+ | variable_name | Value | +---------------+-------+ | Com_kill | +---------------+-------+ Cause four. Your SQL statement was too large. This error can also occur when the result set of the query exceeds Max_allowed_packet. The positioning method is to play the relevant error statement. Export to a file using select * into outfile to s

] '% ' identified by ' Onepassword ';PerformUse Information_schema "or other DB instance"SELECT * from User_privileges; 4) If the query has the following result: ' Root ' @ '% ', it means that MySQL has been authorized to connect remotely. Exit the MySQL command line and execute it in the terminalIptables-a input-p TCP--dport 3306-j ACCEPTAdd 3306 ports to the iptables.5) Restart the MySQL service by executing the following command lastSudo/etc/init.d/mysql Restart (script restart) or service my

How to view Linux system languages Echo $LANGGenerally shown as en_US. UTF-8This is also the default language of the system See if you have a Chinese language pack LocaleIf there is no ZH_CN. UTF-8 related content, stating that no language packs are installed, The installation method is as follows (CentOS or Redhat series, Debian uses Apt-get installation, search for the next tutorial) Yum Groupinstall Chinese-support With the Chinese language pack is not enough,

Troubleshoot issues where Linux cannot use Userdel to delete users and groups System environment#cat /etc/redhat-releaseCentOS release 6.7 (Final)#getenforceDisabled Problem description我在root账户下，删除普通账户worker时，出现如下报错信息：#userdel -r workeruserdel: user worker is currently used by process 1973 我把1973这个进程kill了,再次使用userdel -r worker命令#userdel -r workeruserdel: user worker is currently used by process 1986也就是没有真正的kill掉 Cause of the problemTh

fields (such as: User name, process name, and file or socket name) in double quotation marks. In the following example, we create a trace file that includes only write events to the home directory (we can then use "Sysdig-r writetrace.scap.gz" to see it).Sysdig-p "%user.name%proc.name%fd.name" "Evt.type=write and Fd.name contains/home/"-z-w writetrace.scap.gzSysdig_p_15498248586_de5f5fc93d_zSysdig Example: monitoring network I/OAs part of server debugging, you may need to spy on network traffic

Tags: mysql chinese settings1. Check the MySQL character setting: If it is not GBK, make the relevant settings Mysql>set character_set_client = gbk ; Mysql>set character_set_connection = gbk;Mysql>set character_set_database = gbk ;Mysql>set character_set_results = gbk ;Mysql>set character_set_server = gbk ;Mysql>set collation_connection = gbk_bin;Mysql>set collation_database = gbk_bin; Mysql>set collation_server = gbk_bin

Article Title: Guide CD to troubleshoot server faults in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Service Interruptions caused by system crashes can cause huge economic losses to users. However, if appropriate tools are used, the system can be restored as soon as possible to minimize the loss. Althoug

Some low performance machines, when switching activity when the white screen display the correct view, high-performance machines may be too fast to see, but the fact exists,Especially when you start a new process, the activity of the a process jumps to the activity of the B process, which will definitely appear on a white screen for some time:The solution is as follows1. Increase in Style.xml2 acvitiy attributes are added in theAndroid:theme= "@style/apptheme"

1. Power consumption reasonsAndroid 5.0 increases the nature of judging the state of the network, and the principle is to test a link to Google's Web site. But Google is a wall, so it will cause the mobile network frequent test links, and the network icon above the exclamation point.For more information, please refer to: http://blog.csdn.net/matrix_laboratory/article/details/432714732. WorkaroundTo modify a test link URL:Like what:3. 参考文献Troubleshoot

ReproducedTroubleshoot Android SDK Manager updates, slow downloads, and the list of packages to install does not appearOriginal: http://www.cnblogs.com/tc310/archive/2012/12/21/2828450.htmlRecently in the Android project, found that the download SDK is too slow, but also listen to others said silently waiting for 2 days and 1 nights before finishing. This article was found.Problem Description:Android SDK Manager cannot download updates, or updates are slow, or the list of packages to be installe

. There is also a statement that adds two sentences:203.208.46.146 dl.google.com203.208.46.146 dl-ssl.google.comActually adding two sentences is correct. In this place I want to explain why the two sentences. BecauseThe contents of this inside are downloaded from the top two places respectively. And why before someone used 74.125.237.1 can, now do not. The internet says they will change. To prevent future changes, I'll record a method here to find the available IPs.Such asLeave only one last ove

VC6. Configuration is not primarily a PHP version of the problem. Therefore, it is recommended to downgrade Wamp or PHP version (ffmpeg-php is not good for high-version PHP).Recommended Wamp2.1a (PHP is 5.3.3): Http://pan.baidu.com/s/1i3wybAHFfmpeg-php:http://pan.baidu.com/s/1vqxzcWamp installation is not much to say, go directly to the next step. Ffmpeg-php after decompression there are 9 DLL files, put the Php_ffmpeg.dll into the PHP ext (such as: E:\wamp\bin\php\php5.3.3\ext), the remaining