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log backup filename ' with STOPAT = n ' mistakenly deleted before the point in time ', RECOVERYsituation Two, if the 1th precondition does not exist, the 2nd precondition exists, need to use third-party tool.situation Three, if the 2nd precondition does not exist, cannot recover. Therefore, be sure to set the database recovery mode to full. I am now facing the second situation and need to find third-party tools.Start looking for the log Explorer for
Error 15105: I found some solutions from the Internet, which generally refer to insufficient file permissions,
Of course, you must have the permission to attach the database to perform operations.
Solution 1: grant the Full Control permission to the MDF file. If you do not know which user can go to the configuration center of SQL Server
However, I cannot use the
memory for the system, so that you can open a service on the Server or add a process without changing the memory configuration of the SQL Server, it is generally considered that the minimum running speed of the NT Server is 2 MB and the maximum running speed is 20 MB.
4. use memory configuration to solve the problem of counting servers
After a unit of statistica
A server dedicated to oracle database is prepared for work, and the windows2003 operating system is installed on the server. The computer name is not specified in the installation system,
For work, we have prepared a server dedicated to oracle databases and installed windows 2003 on the
(4616,-1))--Create an application role created application role [ Myapprole] with default_schema = [dbo], PASSWORD = N ' approle '--Change the name, password, or default schema of the application role alter application role [Myapprole] with NAME = [Approle],password = ' AppRole ', Default_schema = [dbo]--Activates the permissions associated with application roles in the current database (cannot be performed in other stored procedures or user-defined
SQL Server attaches Database Error 5123 correct solution
Because I have a database tutorial based on SQL Server 2005, the sample database used in the tutorial is AdventureWorks for SQL Server 2005, and my computer is equipped with
tinyint --Original compatibility level
declare @input_cmptlevel tinyint --compatibility level passed in by user
, @cmptlvl80 tinyint --compatibility to SQL Server Version 8.0
, @cmptlvl90 tinyint --compatibility to SQL Server Version 9.0
, @cmptlvl100 tinyint --compatibility to SQL Server Version 10.0
Select @cmptlvl80 =
@cmptlvl90 = 90,
@cmptlvl
owner of the database
declare @orig_cmptlevel tinyint --Original compatibility level
declare @input_cmptlevel tinyint --compatibility level passed in by user
, @cmptlvl80 tinyint --compatibility to SQL Server Version 8.0
, @cmptlvl90 tinyint --compatibility to SQL Server Version 9.0
, @cmptlvl100 tinyint --compatibility to SQL
Key mysql database performance optimization parameters and mysql Server optimization bitsCN.com
Key parameters for mysql database performance optimization and mysql Server Optimization
Key parameter 1: back_log
The number of connections that MySQL can have. When the main MySQL thread receives a lot of connection re
Server-side high-performance database optimization Evolution details caseOutline
Business Scenarios
The initial technology selection
Read/write separation
Vertical Sub-Library
Horizontal sub-Library (sharding)
Summarize
Business Scenarios* * is the country's leading final three km logistics distribution platform. * * The business model is similar to Didi and Uber, using the
Label:SQL Server Database performance optimizationRecent project needs, did a period of time SQL Server performance optimization, encountered some problems, but also accumulated some experience, now summed up, with June share. SQL Server performance optimization involves many aspects, such as good system and
arise:
Someone on the internet said: Copy the database files to other folders and attachments can be attached, but this method after I test invalid.
Solution to discovering database properties as read-only after attaching a database
The append found that the Database pro
Tags: scripting shell OracleCopy the daily EXPDP export file of an Oracle database to a remote server using shell scriptingZhao Full Text Network name: GuestartWe have a production environment Oracle database, although the daily Rman backup, but also overwhelmed by the developer go out said to restore a few days before the table data into the production environme
In the. NET Core class library, use EF Core to migrate the database to SQL Server. coreef
Preface
If you just use EntityFramework Core as the orm framework, you may encounter database migration problems.
At first, I was in ASP. NET Core Web project, but later found that it is not very reasonable to put it here, some
When attaching a database to SQL Server, the following message is displayed: "version 661 cannot be enabled. Version 655 is supported ......", Sqlserver661655
When we use a database exported by someone else, sometimes We append the database exported by someone else to our computer by appending the
companies, Sybase is the most benign of Linux, although it does not provide SQL Server under Linux, but provides a free ct-lib client, This may also be one of the reasons many IT managers no longer consider Oracle or Informix when choosing a company database. Now, of course, things have changed. ----Sybase's openclient for Linux is a.out format, which has been converted to elf and dynamic-link elf formats
Key parameters for mysql database performance optimization and key parameters for mysql Server optimization 1: back_log requires the number of connections available for MySQL. When the main MySQL thread receives a lot of connection requests in a very short period of time, this works, and then the main thread takes some time (although very short) to check the connection and start a new thread. The back_log v
What are the current SQL Server database monitoring software? After collecting the current SQL Server database monitoring software, I found that QuestsoftwareQuestsspotlight is not available for free open source )? QspotlightIderasSQLDiagnosticManager (charged) red-gatesql-m
Symptom:When running the. NET program, the following message is displayed:"The Database "C:/program files/Microsoft ASP. NET/ASP. NET Ajax sample applications/v1.0.61025/contacts/app_data/contacts. MDF" cannot be updated because the database is read-only."Environment:
Web. config Configuration:
"Connectionstring =" Data Source =.; attachdbfilename = | datadirectory |/contacts. MDF; uid = sa; Pwd = 123456
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