[Switch] the correct method for obtaining the file size in Java, java for obtaining the file size
Source: http://blog.csdn.net/chaijunkun/article/details/22387305. I will sort out relevant blog posts from time to time and improve the relevant content. Therefore, we strongly
; executiontimeout="1850" /> in order to set php.ini Here's the configuration. Open php.ini, first find file_uploads = ON, whether to allow the switch to upload files over HTTP. The default is on is open Upload_tmp_dir, the file is uploaded to the server where temporary files are stored, if not specified will be used the system default temporary folder Upload_max_filesize = 8m; Wang Wen Business,
the current Unix timestamp and number of microseconds. * PHP function Microtime () syntax * MICROTIME (get_as_float) * PHP function Microtime () parameter and description * get_as_float if the get_as_float parameter is given and its Value is equivalent to TRUE, the function returns a floating-point number. * Popularly speaking, with parameter True indicates that only one floating-point number (that is, seconds) is returned, with no parameters returning a microsecond + second string. *
: This article mainly introduces the PHP formatting (file) storage data SIZE (SIZE) display. if you are interested in the PHP Tutorial, please refer to it. Sometimes we need to display the size of a file on the webpage, or the size
bottleneck, you might need to redistribute I/O or add more space to the archive destination to alleviate the problem. for the logfile switch (checkpoint incomplete) event: Check if DBWR is slow, possibly due to an overloaded or slow I/O system. check the DBWR write times, check the I/O system, and distribute I/O if necessary. see Chapter 8, "I/O Configuration and Design ". check if there are too few, or too small redo logs. if you have a few redo log
switch and size limit---------------------------------1) Use the ULIMIT-C command to view the build switch for the core file. If the result is 0, this feature is turned off and the core file is not generated.2) using the ulimit-c filesize command, you can limit the
size control in Apache environmentModify the httpd.conf in the APAHCE directoryAdd the following:Limitrequestbody 10485760That is 10m=10*1024*1024, some of the articles mentioned should be changed to 600000000To restart Apache, you can see the size you want in the settings.How to modify the Linux environment ================================================================Modify Etc/php.iniLocate the
Open PHP.ini, first find
;;;;;;;;;;;;;;;;
; File uploads;
;;;;;;;;;;;;;;;;
Area, there are several parameters that affect file uploads:
File_uploads = on; switch to allow uploading of files over HTTP. The default is on, which is open
Upload_tmp_dir; files uploaded to the server where temporary files are stored, if not specified, will use the system default temp
This blog introduces several basic Linux commands, write if there are shortcomings, but also hope that readers are not hesitate to enlighten! Switch directoriesCD(changedirectory) Switch working directorySyntax: CD [directory to switch]CD : Enter the user's host directory (home)CD ~ : Enter user's home directory (same as CD function)CD- :
for intermediate transitions, query select Group#,sequence#,bytes,members,status from V$log when deleting, delete Group is inactive if not inactive the alter system switch logfile must be executed;Query to seeSql> select Group#,sequence#,bytes,members,status from V$log;group# sequence# BYTES Members STATUS---------- ---------- ---------- ---------- ----------------1 148 524288000 1 Current2 143 524288000 1 INACTIVE3 144 524288000 1 INACTIVE4 146 5242
ObjectiveRecently, an older company project has been optimized to deal with the main problem is webpack packaging file size too large.Here's a little bit of experience with webpack packaging optimization.Mainly divided into the following aspects:
Remove the configuration from the development environment
Extracttextplugin: Extracting styles to CSS files
Webpack-bundle-analyzer:webpack packag
its size.
However, online redo logs cannot be directly resize and need to be done as follows:
1 Add a new log file group and define its size
Sys@test15>alter Database Add logfile Group 4
('/data/oradata/orcl/data/redo04a.log ', '/HOME/ORACLE/DATA/ORCL /redo04b.log ') size 500M
reuse;
Database altered.
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