failure reason 2313

Overview:In the recent analysis of an occasional problem, the occasional probability is particularly low, the problem is still in the analysis. Make a summary of the analytical knowledge and continue to add it later. Problem Description:The code encountered an exception when calling Lua's require function, and by looking at require's source trace, it found that the function's fopen function returned an exception that failed to open the file. The following is to summarize the fopen open file er

Failure possibility one, cause drive load failure reason including the driver itself is not complete, the second is to download the update drive when not download completely, some anti-virus software or firewall to intercept. There is also the possibility that your driver version is incorrect, or that the driver file is corrupted. Not installed, just reinstall th

The MongoDBBasicDBObjectput method fails. The reason for the put Value failure and the solution BasicDBObjectobjnewBasicDBObject (); obj. put (key, value); the error occurs because the key is unique. If the key is the same, it overwrites the previous www.2cto.com, for example, obj. put (a, 1); obj. put (B, 2); obj. put (c MongoDB BasicDBObject put method failed. Cause of put Value

MySQL foreign key creation failure 1005 reason summary MySQL foreign key creation failure 1005 reason summary _ MySQL 1. install mysql with InnoDB plug-in extension ./Configure -- prefix =/usr/local/mysql -- with-plugins = csv, innobase, myisam, heap, innodb_plugin 2. the column referenced in the master table can

Connection failure using Phpmailer, the code is already encapsulated by others no problem, the possible reasons are as follows.QQ Hint: SMTP server Error:mail from address must is same as authorization user163 Tip: SMTP connect error, and so onFirst, the two in the php.ini to open, in fact, a lot of people are open; Extension=php_sockets.dll; Extension=php_openssl.dllSecond, the code in the$mail->password = ' ********** '; Sender's Email passwordThis

Possible causes: 1. Antivirus software (recommended to close or uninstall first) 2. Problem-driven 3. Some external devices that use incompatible wind8.1 　　Workaround: 1. First please confirm whether your model supports upgrades to Win8.1. 2. It is recommended that you temporarily remove all non-Lenovo pre-installed external devices, such as mouse, keyboard, printer, camera and so on. 3. It is recommended that you back up important personal files, use a key restore function to restore the

Sina Weibo verification failure what's going on First of all, we know that micro-Bo secretary asked why the account is abnormal, the general will give the answer; Then we can usually solve your problem by following the prompts. 2, if the network has a problem we can try to change a network environment, if the network can be resolved is the reason for the network Okay, this is a small s

jquery is really a nice lightweight JS framework that can help us quickly develop JS applications and, to some extent, change our habit of writing JavaScript code. Cut the crap, go straight to the point, and we'll analyze the cause of the failure. I. Causes of failure That is because of the response reason, the general request browser is to handle the output o

table field takes a date variable. or the opposite.10, the index is invalid.11, cost-based analysis (Oracle because the cost of walking the table is smaller): Query the small table, or the return value of about 10% or more12, sometimes it's all taken into account, but it's not going to be indexed, drop the test from the build13,b-tree index is null does not go, is not NULL will go, bitmap index is null,is not NULL will go14, the federated index is not null as long as the indexed column is estab

PHP function __autoload can implement simple automatic loading, but after the introduction of Smarty found that the __autoload function is invalid, and later found to be the reason for the Spl_autoload_register function. Execute the following code: function __autoload ($name) {require ' class/'. $name. PHP '; Echo ' 1 ';} function Autoload_test ($name) {echo ' 2 ';} Spl_autoload_register (' autoload_test '); $ca =new CA (); Output 2, you can see

you cannot access it, the probable cause is generally the following two: 1) Are there any settings for the computer login password? You cannot share without setting.2) is the computer firewall open? Cannot be shared after it is opened. According to the above two reasons, I checked each one, found that the firewall is open, so I closed the firewall.Test again, and finally pop up the dialog that asks you to enter your computer login username and password.LAN shared accessYou can acc

Float Object#left {float:left;}When we specify that the element's float is left, it means that the content on the right will be able to flow into the rightmost column, and can automatically flow into the left column according to the width of the left column, and the degree of pasting is controlled by the margin-right of the left column or the margin-left of the right column.But the premise is that #right that div exists, if it does not exist, it is set with Margin-left.HTML CSS float margin

The Text-align property is a property set centered on an inline element, and margin:0 Auto is used for block elements to control the center;I set a H2 tag when the text-align:center, but always appear in the center left position, the first reaction is possible style conflict, but after finding no conflict, and changed the P tag is not, and finally through the Google review element function to see a user Property settings for Agent styleOriginally the browser made a H2 to set the block element so

. Fsnamesystem:isaccesstokenenabled=false accesskeyupdateinterval=0 min (s), Accesstokenlifetime=0 min (s) 12/02/20 14:09:57 INFO Namenode. namenode:caching file names occuring more than times12/02/20 14:09:57 INFO common. Storage:image file of size (SAV)Ed in 0 seconds.12/02/20 14:09:57 INFO Common. Storage:storage Directory/data0/hadoop-name/namenode has been successfully formatted.12/02/20 14:09:57 INFO Namenode. namenode:shutdown_msg:Summary of issues:before formatting the Namenode, make sur

Error message:arrow.html:44 uncaught securityerror:blocked A frame with origin ' null ' from accessing a frame with Origin ' null '. protocols, domains, and ports must match.Error code:1$ (". Main"). Click (function() {2 varTartget =window.parent;3 varTartget1 =Window.parent.window;4 var tartget2 = window.parent.window.document; child window failed to get parent window5 varTartget3 = Window.parent.window.document.getElementById ("Mainframeset");6 varMainframeset =

The delete operation in Java.io.File is useful and common, and can be used to delete individual files and a directory. However, there are times when delete fails, and this can happen for the following reasons:1, when the deletion of other programs in the use of the file, this will not be deleted correctly2, no close closed and the file related to all the input and output stream, etc., resulting in the inability to delete (this is the most easy to forget, you may be guilty of this article)3, when

has been in accordance with the previous settings capture package, set proxy IP, download the installation certificate through Safari, grab packet https How to display the certificate is invalid? is the certificate blacklisted by Apple? Google found that after IOS10.3, the installation of the certificate is not enabled by default, but needs to be opened manually.How to set it up?Set –> Universal –> about native –> certificate information settingsFiddler on ios10.3 system grab packet https

Singleton Singleton; transient int i; Short/** * Single case mode 1 * Advantage: simplest; is called lazy because it delays the initialization of a single case to the first call * Disadvantage: thread unsafe * *@return */public static Singleton getinstance () {if (Singleton = null) {Singleton = new Singleton (); return singleton; /** * Advantages: Thread safety * Disadvantage: 99% sync is much with the * *@paramS *@return */public static synchronized Singleton getinstance (String s) {if (Si

, the intermediate results of the query storedIf you have only insert and select operations, you can choose Archive,archive to support high concurrency inserts, but it is not transaction-safe by itself. Archive is ideal for storing archived data, such as logging information can be used archiveWhich engine to use requires flexibility, multiple tables in a database can use different engines to meet a variety of performance and real needs , and using the right storage engine will improve the perfor

The reason and solution to the failure of malloc function allocating memory first of all, the conclusion The reason the malloc () function allocates memory failure:1. Not enough memory.2. There was a cross-border access to memory in the previous program, causing some of the information involved in the malloc () allocat