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Frequently encountered problems with databases:1), database file space exhausted 2), log file growth 3), database file cannot shrink 4), autogrow and auto shrinkThis series is based on the above 4 questions to analyze and summarize the database space management methods.1. How to allocate files and how to check file spaceFirst, you run sp_spaceusedin your database, and then you see the usage

Label:Original: SQL Server: Understanding Page Free Space (PFS) pagesWe have discussed the GAM with Sgam page, the data page, and now we look at the page Free Space page (PFS) . PFS is the 2nd page in the Data file (page No. 1, page number starting from 0), followed by the header (file header, page number 0). GAM and Sgam are used to track the allocation of a zo

overcoming this problem by modifying some of the settings of the tempdb data.SummaryIn this week's performance tuning training, we explored district and district management in SQL Server. It should now be understood that there is a good and strong internal SQL Server construct.If you want to learn more about the area, I recommend the following SQL Server quickie

data.SummaryIn this week's performance tuning training, we explored district and district management in SQL Server. It should now be understood that there is a good and strong internal SQL Server construct.If you want to learn more about the area, I recommend the following SQL Server quickies: SQL Server Quic

Recently hit patch, because the server C disk space is not much of the results generated a lot of alarm, although not very serious but this problem can be avoided, wrote a very simple script to detect the server C disk space, and you shareFirst you need to gather information about the

connect5. Run WinRM get Winrm/config will prompt "Access denied"6.Administrator Password cannot be empty After remote enabled, you can enter WBEMTest in the CMD command window to test whether the remote server can be connected, as shown in figure: The status of the successful connection is as follows: You can take the disk space for each server below. Se

Aaron null 4 Betty null --null is not equal to any value, even null is not equivalent to null --Default cannot use Note, however, that SQL Server cannot use = or In other words, SQL Server opens the ANSI_NULLS option by default. --Set ANSI_NULLS to OFF and use =null query to record set ANSI_NULLS off SELECT * from test_null tn WHERE tn.lname = Null -------------------------------------

Label:For DBAs, backing up and refreshing resumes is two of the most important tasks, and if a failure occurs and the backup is not available, then the importance of refreshing the resume appears, wow! Of course, backup is the most important thing for DBAs (not one), and in a conditional scenario, we should keep multiple full and log backups on multiple servers, and even some companies will require complete data to be retained on tape or over large storage to ensure that data can be recovered lo

"Java.lang.OutOfMemoryError:PermGen spaceNBSP; Exception in Thread" Thread-10 "Java.lang.OutOfMemoryError:PermGen SpaceNBSP; Exception in Thread "http-8180-39" Java.lang.OutOfMemoryError:PermGen space Solution:Non-heap space is not enough, in fact, the setting is very large-xx:permsize256m-xx:maxpermsize:512mShould be PermGen space in tomcat the default is 64

Tag: SQL Server database log shrinks free space.How SQL Server database shrinks log spaceDescription: SQL Server database log will become larger, especially when the space is tight, you have to shrink the log to release some of the space, the following means.Version: SQL

Workaround:Method 1, sp_spaceusedMethod 2, DBCC SQLPERFMethod 3, DBCC SHOWFILESTATSMethod 4, DBCC SHOWCONTIGMethod 5, Sys.dm_db_partiton_stats--------------------------------------------------------------------------------------------------------------- -----------------------------------------------Method 1,Execute sp_spaceused; Returns the overall usage of the current database space without parameters.Execute sp_spaceused @objname = ' dbo. Nums '; R

Recently found when comparing strings in SQL Server if the end of the string is a space then SQL Server ignores those spaces and compares them directly to the usual string judgment logic in the program.Declare @a nvarchar( -);Set @a=N'happycat1988' Declare @b nvarchar( -);Set @b=N'happycat1988' if(@a= @b) Select 'True' asDirect equals comparisonElse

CauseToday, the point code is submitted locally, but to the server git pull when prompted No spaceleft on the device, the first reaction is the suspect may be full (probably log caused), but think it is not likely to think, Only one application is deployed on this server, and it is not a small amount of space to see the project footprint.Resolution process1, as a

To view disk space usage:Df-hView the space occupied by the first level directory under the root directory:Du-h--max-depth=1/Find files larger than 2000M in the root directory:Find/-size +2000mFind files that have been deleted, but are still occupied by the process:Lsof |grep deletedReview the process information based on the process ID found in the previous step:Ps-ef | grep pidServices to restart the proc

Kangle Web services running on the win host PHP personal feeling is very good, and then with Easypanel Host Control Panel open website and database is very convenient and practical, and space management function can meet the needs of individual webmaster. We help many customers here to install such a platform, but many children's shoes do not know how to use, here on the detailed introduction down to help the rookie. Install the Kangle Web and Easypa

files with a larger footprint in the/var/lib directory and sort in descending order650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/86/60/wKioL1e9VDzTDw1IAAAywgTebP4284.png-wh_500x0-wm_3 -wmp_4-s_3024368163.png "title=" qq picture 20160824160039.png "alt=" Wkiol1e9vdztdw1iaaaywgtebp4284.png-wh_50 "/>5 found the system disk occupies a file, find a strange directory file, you can search the Web for the file is useful, whether it can be deleted. However, usually non-/boot/bin/etc/lib/lib

Java HotSpot (TM) 64-bit Server VM warning:insufficient space for shared memory file:/tmp/hsperfdata_work/23408Try using the-djava.io.tmpdir= option to select a alternate temp location.An error indicates that a zone is full of memory!Df-h View memory usage.Solve:Enter command Find/-size +200m-exec du-h {} \; View files larger than 200M (the preferred delete log file).Error: Java HotSpot (TM) 64-bit

Web site security, the implementation of the directory is very sensitive to the permissions, in general, can be written to the directory is not able to have the execution permissions of the script, like the DEDECMS system, can be written to two directory data, Uploads,data directory is mainly basic configuration files and cached data, Uploads is the attachment upload saved directory, this article will be for different server environment to explain how

1 UseMaster2 Go3 Select * fromsys.dm_os_buffer_descriptors4 Go5 6 --View the amount of space the database occupies in the data cache7 --128 Bytes, 1/8 kilobytes (KB) because each data page corresponds to a row in dynamic management view (management VIEW,DMV)8 --1 byte (byte) = 8 bit (bit)9 --1000 kilobytes (KB) = 1024 bytes (byte)Ten --1 megabytes (MB) = 1.024 million kilobytes (KB) One Select Count(*)*8/1024x768 as 'Cached Size (MB)', A Ca

then replace the data file of the new library with the attached failed data file, and then set the database as the Emergency Recovery mode, so that the data can be read in generalALTER DATABASE db_name SET EMERGENCYAfter the database can be read, you can try to set it to ONLINE mode, if successful, then DBCC CHECKDB once, confirm no problemIf you can't online, you probably have to create a new library and then take the data from the contingency mode library to the new library.Special Note: The