transaction query

The flashback transaction query is actually an extension of the flashback VERSION Query query. The flashback VERSION Query shows that we can audit all changes to the table within a period of time, but we can only detect problems, there is no good

Principle: Based on undo A flashback transaction query can be viewed as a diagnostic tool that queries database changes at the transaction level Flashback_transaction_query Retrieve transaction information for all tables involved

Environment: 15:25:40 hr@ORCL (^ω^) select * from v$version where rownum=1;BANNER-------------------------------------------------------------------------------Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod I) flashback transaction

OCP question parsing _ 043: flashback transaction query can obtain the historical information of the specified transaction from FLASHBACK_TRANSACTION_QUERY and Undo_ SQL through this UNDO_ SQL, query the operations performed by a specific firm, and

Session interface: The session interface session interface is one of the most important interfaces for hibernate developers. In hibernate, however, the instantiated session is a lightweight class, and creating and destroying it does not consume a

Package cn.edu.ynu.sei.atm.client.ui; Import Org.eclipse.swt.SWT; Import Org.eclipse.swt.widgets.Button; Import Org.eclipse.swt.widgets.Composite; Import Org.eclipse.swt.widgets.Display; Import Org.eclipse.swt.widgets.Label; Import

We know that in a relational database there are four properties for a transaction: atomicity (atomicity): a transaction is executed as a whole, and the operations contained therein are either completely executed or not executed.

We know that in a relational database there are four properties for a transaction: atomicity (atomicity): a transaction is executed as a whole, and the operations contained therein are either completely executed or not executed.

Note the first wave of high-performance mysql A transaction is an atomic SQL query, or an independent unit of work.. If the database engine can successfully execute all the statements in the group, it will execute these statements. If any of the

Build table Insert test dataA> CREATE TABLE test (id int, num int);Query OK, 0 rows affected (0.53 sec)a> INSERT into test values ();Query OK, 1 row affected (0.01 sec)a> INSERT into test values (2,2);Query OK, 1 row Affected (0.00 sec)a> INSERT

Session Interface The session interface is the most important interface for hibernate developers. However, in hibernate, the instantiated session is a lightweight class, and it does not occupy a lot of resources when it is created or destroyed.

The problems caused by transaction concurrency are the problems that need to be solved by the database. The transaction processing technology is very mature, and the four isolation levels plus a snapshot is a common solution for all databases,

Oracle DatabaseOfFlashback personalityIt provides convenience for rapid batch copying of specific data of an object. Several features of Oracle flashback include flashback database, flashback drop, flashback query, and flashback table. This article

MySQL Four transaction isolation level detailed and comparison According to the sql:1992 transaction isolation level, InnoDB is repeatable by default (Repeatable Read). MYSQL/INNODB provides all four transaction isolation levels described by the

Transferred from: http://www.cnblogs.com/zhoujinyi/p/3437475.htmlThe articles that were written earlier, reviewed and studied, can also be seen in this article.By sql:1992 transaction ISOLATION level, InnoDB is repeatable read (repeatable read) by

Detailed description and comparison of the four transaction isolation levels of MySQL, and detailed description of mysql Detailed description and comparison of the four transaction isolation levels of MySQL At the SQL: 1992 transaction isolation

Package cn.edu.ynu.sei.atm.client.ui; Import cn.edu.ynu.sei.atm.interfaceDef.ITransaction; Import java.rmi.Naming; Import java.rmi.RemoteException; Import java.util.ArrayList; Import Org.eclipse.swt.SWT; Import

　　Early writing articles, re-review and study under:By sql:1992 transaction ISOLATION level, InnoDB is repeatable read (repeatable read) by default. MYSQL/INNODB provides all four transaction isolation levels described by the SQL standard. You can

Early writing articles, re-review and study under:By sql:1992 transaction ISOLATION level, InnoDB is repeatable read (repeatable read) by default. MYSQL/INNODB provides all four transaction isolation levels described by the SQL standard. You can set

The articles that were written earlier, reviewed and studied, can also be seen in this article.By sql:1992 transaction ISOLATION level, InnoDB is repeatable read (repeatable read) by default. MYSQL/INNODB provides all four transaction isolation