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Nested transactions in SQL Server use--transaction count indicates a mismatch between the number of BEGIN and COMMIT statements--The underlying problem

Turn from: Nested transactions in SQL Server use--transaction count indicates a mismatch between the number of BEGIN and COMMIT statements--The underlying problemProblem:1. System.Data.SqlClient.SqlException (0x80131904): The transaction count after

Compare the impact of a single COMMIT and multiple COMMIT on the waste of log space while changing the data volume.

Compare the impact of a single COMMIT and multiple COMMIT on the waste of log space while changing the data volume. The LGWR process writes online logs in sequence and does not skip in the middle, and the LGWR process does not write twice in the

Start transaction, commit, and rollback syntax

Start transaction,COMMIT, AndROLLBACKSyntax From: http://dev.mysql.com/doc/refman/5.0/en/commit.html Of course, the article noted from MySQL, but MySQL, SQL Server, Oracle start tracmsaction, commit, and rollback syntax are no problem in DML. I hope

[Oracle]-[impact of COMMIT on indexes]-view the impact of COMMIT on indexes from the trace

[Oracle]-[impact of COMMIT on indexes]-from trace, we can see the impact of COMMIT on indexes. Recently, due to work requirements, there is a task involving data migration, therefore, I have been paying attention to the time-consuming issue of

If the data volume is the same, a single COMMIT and multiple COMMIT will waste log space.

The LGWR process writes online logs in sequence and does not skip in the middle, and the LGWR process does not write twice in the same log. Even if the logs written at a time occupy only a few bytes, they will not be used again next time, this

Distributed Transaction (i) two-phase commit and JTA

Distributed transactions, like local transactions, contain atomicity (atomicity), consistency (consistency), isolation (isolation), and persistence (durability). Two-stage commit is an important method to ensure atomicity in distributed transaction.

Description of Oracle Block scn/commit scn/cleanout scn

Oracle Block scn/commit scn/cleanout scn description 1. description: The cache header part of the Block records a block scn, which is the timestamp of the last change of the current Block. To be exact, this update does not refer to the latest update

PL/SQL and sqlplus query results are different-don't forget commit!

The same SQL statement, the query results in Plsql and Sqlplus are different, have you seen it?A query was executed today in Plsql's SQL window for select * from T_user; Query to 6 records:Later, in order to facilitate the testing of other data,

START TRANSACTION, Commit and rollback syntax

Start transaction, commit and rollback syntaxStart Transaction | Begin [Work]commit [Work] [and [No] chain] [[No] release]rollback [work] [and [No] chain] [[No] release]set autocommit = { 0 | The 1}start transaction or BEGIN statement can begin a

Transactional operations (Begin/commit/rollback/save TRANSACTION)

BEGIN TRANSACTIONMarks the starting point for an explicit local transaction. BEGIN TRANSACTION The @ @TRANCOUNT by 1 increments.BEGIN TRANSACTION represents a point where data referenced by a connection is logically and physically consistent at that

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