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In general, it is best to have SQL Server operate in isolation transactions in the default form; Isolation is, after all, one of the basic principles of the acid model. However, sometimes the database administrator has to violate the default behavior because of business requirements, but instead take a more flexible approach to transaction isolation.
to complete transaction. ROLLBACK TRANSACTION; ELSE --Transaction started before procedure --called, don't roll back modifications --made before the procedure was called. IFXact_state () -1 --If The transaction is still valid, just --SavePoint set at the
You can customize the transaction isolation level based on your SQL Server, which will meet your requirements or improve performance. For example, for SQL Server with simple logic, you can use the read uncommitted mode to reduce deadlocks, reduce congestion, and improve perf
first, the phenomenon of problems When executing a SQL Server distributed transaction, you receive the following error under SQL Server 2005:Message 7391, Level 16, State 2, process xxxxx, line 16thThe operation cannot be performed because the OLE DB provider "SQLNCLI" of th
RECOVERY full with no_wait GO ALTER database dnname SET RECOVERY full--Also The original full mode GO SQL2005 Empty Delete log: Backup Log dnname with No_log ' Here's dnname is the name of the database you want to shrink, and I'm not going to comment anymore by changing the database name below. go dump Transaction dnname with no_log go use dnname DBCC shrinkfil
Label:Why do we need transaction logs to delete or not add log files? The answer is no, if there is no transaction log, your database will not work at all!The transaction log supports the following operations:Transaction rollbackI
Transaction log files transaction log file is a file that is used to record database updates, with an extension of LDF.In SQL Server 7.0 and SQL Se
TAGS: LSE value try reverse label inf List Tor backupThe transaction is about atomicity. The concept of atomicity means that some things can be viewed as an inseparable unit. From a database point of view, it refers to the smallest combination of one or more statements that should be executed all or not at all. To understand the concept of a transaction, you need to be able to define very clear boundaries.
Tags: io os on admin SQL window C Windows method1, IP address is not configured correctly:Open the SQL Server Configuration Manager under Microsoft SQL Server 2005 Config tool, select the MSSQLSERVER protocol, and then double-click TCP/IP in the right window to check the con
Label:Problems encountered in a project: The system log is too large, and later deleted with the DELETE statement (rather slow), the results of the database log becomes very large (almost 10G), so you have to delete the database log.Method:--partial logs in the backup system--select * into #keep from Ccssystemlog WHERE logtime > ' 2011-12-31 '--truncate TABLE Ccssystemlog--insert ccssystemlog SELECT * from
Summary of writing transaction processing methods in SQL Server Stored Procedures, and storing process transactions This article describes how to write transactions in the SQL Server stored procedure. We will share this with you for your reference. The details are as follows
If you run a linked server query in the SQLServer2000 installed on Windows.netserver, the following error may be returned (even if MSDTC is running on the server): Symptom if you run a linked server query in the SQLServer2000 installed on Windows.netserver, the following error may be returned (even if MSDTC is running on the
Partial transaction rollback in SQL Server 1. Save point: a partial rollback method. You can name a storage point so that you can roll back to the storage point in subsequent transactions. 2. Implementation Code. Begin transaction transaction_name SQL _statement1
Respecting the original works: This article is for reference from http://www.jb51.net/article/43540.htm--begin distributed TRANSACTION [Transactionname]--Flag a TSQL distributed transaction managed by the Distributed Transaction Coordinator MSDTC starts--server a server is t
Label:The transaction is all about atomicity. The concept of atomicity means that some things can be viewed as a unit. From a database perspective, it refers to the smallest combination of one or more statements that should be executed all or none of them. To understand the concept of a transaction, you need to be able to define very clear boundaries. The transaction
Tags: SQL Server 2014 log shipping13.1 Log Shipping Overview13.1.1 How log shipping worksLog shipping is a transaction log backup delivery technique.
A transaction is a unit of concurrency control and a sequence of user-defined operations. These operations are either done or not done. They are an inseparable unit of work.Through transactions, SQL Server can bind a set of logical operations to ensure data integrity on the server.In the SQL
After SQL server log transfer is configured, the SQL server log is very large because the backup database is large and the time is frequent. For example: Because we already have log
/// /// SQL Server transaction sample class to demonstrate SQL transaction operations/// By Camus)/// Public class sqlservertransactiondemo{Private sqlservertransactiondemo (){} /// /// Obtain the SQL
Tags: Clear right-click Extension start modify cause build expansion space developmentTransaction log files transaction log file is a file that is used to record database updates, with an extension of LDF.In SQL Server 7.0 and SQL
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