When deleting data in a table with a parent-child relationship, we all know that you must delete the child table before deleting the data in the parent table. Alternatively, you must cancel the foreign key before deleting the data.
Yesterday, we used to delete the child table first, then the parent table, and truncate to delete the child table. The following message is displayed when we delete the parent table:
"
An error occurred when running the command on Line 1:Truncate table ep_pointError R
This article is first published in the dark world.
The most recent server of the company needs to enable the FTP service to transfer files.
However, considering that the server is on the public network, firewall is usually enabled for security considerations. In general, I disable the firewall for FTP servers in the company.
Below I will flow out the firewall configuration as follows:
OS: Windows Server 2003, 2008 ftp: filezilla server 0.9.41
The firs
This article is the JS settings control readonly and enabled properties of the problem is introduced, the need for friends can come to the reference, I hope to help youHow can I set the readonly and enabled properties of a control with JS? I have tried this setup is not possible, Text1 for text1.readonly=true; and Text1.enabled=true; No, why??? Answer:
Failure phenomenon:
Intel Rapid Start error your system does not appear to have enabled the Intel Rapid start Technology, as shown in the following figure:
Reason Analysis:
1. The Intel Rapid Start technology is not enabled under the BIOS.
2. The hibernate partition is corrupted or does not exist under the system with the Intel Rapid Start program installed.
Solution:
1. Access to disk Management to
Create a function in the master database of the MySQL master-slave replication machine, reporting the following error:Error code:1418. This function has none of the deterministic, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled c1> (you *might* want for use of the less safe log_bin_trust_function_creators variable)It turns out that the binary log option is turned on for two MySQL servers in the master-slave replication Log-
An unsecured HTTP method workaround is enabled for IBM APPSCANSecurity Risks:Web pages, scripts, and files may be uploaded, modified, or deleted on the Web server.Possible causes:The WEB server or application server is configured in an insecure manner.Revised recommendations:If the server does not need to support WebDAV, be sure to disable it or disallow unnecessary HTTP methods.Introduction to the method:In addition to the standard get and post metho
After the update, you cannot enable the stereoscopic effect-Linux general technology-Linux technology and application information. The following is a detailed description. Hi!
After updating fedora11 today, we found that the ibus input method and desktop stereo effect cannot be enabled. I checked the website and said, "The fedora upgrade may cause some problems. For example, the abc Package of the old version is not deleted, the new version of the pa
Reprinted: WebBrowser is only enabled for applications outside the browser and applications running in Internet Explorer with higher permissions. webbrowserexplorer
I have summarized the problems of enhancing the WebBrowser's trust in Silverlight Based on a lot of blogs written by great gods and my own project:
1) Select the Silverlight main program, right-click "property"> "Sliverlight", and select the position circled by the red line on the way:
2)
IDEA Error: Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. ('crmwatcherservice' Error ),
A single table is inserted into a project, which is normal before insertion. If you run webapplication after insertion, an error is returned:
Run:
Debug:
Webapplication error:
Injection of autowired dependencies failed; nested exception is java. lang. illegalArgumentException: cocould not
Android-determine whether the Service is enabled, and android determines the service
Continued the Baidu map positioning Demo, used the Service for Baidu positioning, and encountered a problem when uploading data to the server: after using the memory to close the program in the real machine, the Service will be closed, but in a few seconds, it will automatically restart; restart, and the same Service will be enabl
The remote connection in Ubuntu takes into account the computer. if CapsLock is enabled but uppercase letters cannot be entered, Shift + Letter can be used to input uppercase and lowercase letters. The solution found on the internet is as follows: sudogedit/usr/share/rdesktop/keymaps/common, locate the final Caps_Lock row, comment out the row with '#', and save
The remote connection in Ubuntu takes into account the computer. if Caps Lock is
Currently, the new LightDM logon interface is enabled by default in the latest Ubuntu11.10. Please note that the above is not complete: the password input box is lost, "close" in the upper right corner of the panel, "restart", and so on. LightDM is a cross-desktop display manager designed to become the standard display manager of the X. orgX server. We write a new display manager because many new display managers have emerged since XDM (usually based
When I was experimenting on my own computer today, I was preparing to share my wireless network connection to the VMnet1 times when Internet Connection Sharing access was enabled, an error occurred. (NULL) Error:Online query to the cause of the problem: No Windows Firewall services caused by the computer installation of security guards, such as software, will be Windows firewall disabled. workaround : enable the Windows Firewall service.1. Start-up Co
In Win10 1709, how does one set the time when the night mode is automatically enabled ?, Win101709
In Windows 10, we can set the night mode, but every time we enable the night mode, we need to click the mouse. This is too troublesome. Is there a way to enable the computer to automatically start the night mode? Let's take a look at the setting method.
On the Windows 10 desktop, right-click the start button and click set menu items in the pop-up menu
Recently made a network change, found that SSG140 through the web/telnet/ssh can not access, but SNMP monitoring and ping are normal, internal Internet access to a variety of applications are no exception, only can not access the Administration page. The fault has been dealt with today.
1. Failure of various management methods, try to connect ssg140 with console
2. Once the login is successful, first back up the configuration file
Get config > tftp 192.168.1.1 ssg140cfg.txt
Check whether IPVS is enabled in the kernel? ChecktoseeifmykernelhasIPVSenabled-Linux general technology-Linux programming and kernel information. For details, see the following section. Run the "modprobe ip_vs" command and check whether/proc/net/ip_vs exists. If so, your kernel has enabled IPVS.
You can also run "cat/proc/net/ip_vs" or "ipvsadm-Ln" to view your IPVS version.
[Root @ lb4 root] # ipvsa
A tragedy caused by the dramatic increase in HugePagesORACLEsession not enabled
Fault description: HugePages is not enabled in LINUX, the host memory is nearly 300 GB, And the SWAP is 32 GB. The SGA_MAX_SIZE setting of ORACLE is about 80% of the host memory, and the SGA_TARGET setting is about 60% of the host memory. Normally, the database session is about 500. The service changes on the day of the fault, a
MySQL databaseOfBinary logNot only for Replicate \ audit, but also for backup and restoration like other RDBMS systems. Next, we will introduce how to back up and restore the MySQL database with log-bin enabled.
The procedure is as follows:
(Optional): backs up binary log files.
Step 1: Start the server mysqld: Make sure some options are used
# Cancel binary startup
# Log-bin
# Allow salve I/o thread to read its own server-id binary lo
Solve ThinkPHP's problem of enabling APP_DEBUG amp; gt; false to report an error, thinkphpapp_debug. Solve the problem that ThinkPHP encounters an error when enabling APP_DEBUGfalse. thinkphpapp_debug recently used ThinkPHP to develop a project. after the local development test is complete and uploaded to the server, it is enabled normally for the first time, solve the problem of ThinkPHP enabling APP_DEBUG => false when an error is reported. thinkph
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