oracle update commit

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

Http://www.cnblogs.com/quanweiru/archive/2012/11/09/2762223.html 1,for update and for update nowait differences: First of all, if only Select,Oracle will not add any lock, that is, Oracle to Select read the data there is no limit, although it is

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 transaction row-Level Lock storage point rollback commit. Note that A and B are not two ORACLE accounts, but two connection sessions. The above is just Oracle transaction row-Level Lock storage point rollback commit. Note that A and B are not

Today, oracle SQL plus performed the delete and query operations and then the query operations in PL/SQL. The results of the same statements were different, which made me feel quite depressed, later, I suddenly thought that the data on both sides

triggers cannot invoke or indirectly invoke a DCL statement such as Commit,rollbackDDL statements and Commit,rollback statements cannot be run in triggersDDL statements: DDL statement terms define and manage objects in the database, such as

Today, in Oracle's SQL plus execution of the delete and query operations, and then execute the query in PL/SQL, the same results are not the same, let me feel depressed, and then suddenly think of the two sides of the data inconsistency caused, but

Today, in Oracle's SQL plus run the delete and query operations, and then run the query in PL/SQL, the same, the result is not the same, let me feel depressed, and then suddenly thought may be on both sides of the data inconsistency caused, but why

1. COMMIT_FORM and COMMIT Both form and database are submitted. Submit the data changes in form to the background database, and submit the data in the database. 2. DO_KEY ('commit _ form ') It will first execute the code in the KEY-COMMIT trigger.

1. COMMIT_FORM and COMMIT Both form and database are submitted. Submit the data changes in form to the background database, and submit the data in the database.2. DO_KEY ('commit _ form ') It will first execute the code in the KEY-COMMIT trigger.