We all know that the DB2 V9.7 database has introduced a series of new features. The emergence of these new features makes IT easier for customers to save IT costs. Specific features include compression enhancement, pureXML enhancement, usability
Db2 uses hints (guidelines) like oracle)Db2 uses hints (guidelines) C: \ DB2> more f3.sqlSELECT d like oracle. DEPTNAME, e. FIRSTNME, e. lastnamefrom department d, employee ewhere d. DEPTNO = e. workdept and e. empno like '123 '/*
BKJIA Summary: IBM provides the free version of DB2 Express-C for the Community, which provides the same core data features as DB2 Express Edition, it lays a solid foundation for building and deploying applications.
DB2 performance optimization is a
BKJIA exclusive Article: First of all, this article is not a detailed list of new features of DB2 9.7. I only list a list that is very important to DBAs or developers.
Online solution Modification
Please refer to Burt's article on online solution
JDBCIsolation level
Database isolation level
Data Access
TRANSACTION_READ_UNCOMMITTED (Uncommitted Read) Uncommitted Read
Ur
Dirty read can read updated data when no data is submitted.
The following article describes the best practices for optimizing DB2 UDB v8.1 and its databases.®The UDB database and its applications provide the help needed for optimal performance. Contact the author for practice.
This article discusses various
Com. IBM. db2.jdbc. db2exception: [IBM] [CLI driver] [DB2/NT] sql0911n has rolled back the current transaction due to a deadlock or timeout. Cause code "2 ". Sqlstate = 40001
Solutions provided by IBM for this problem
This problem may be caused by
DB2 Get DB Cfg|find "Cur_commit"Currently implemented (cur_commit) = OnDB2 Update DB CFG using cur_commit offdb20000i UPDATE DATABASE CONFIGURATION command completed successfully.SQL1363W does not dynamically change one or more parameters that are
Continue to learn about the new version. Concerning the lock, DB2 seems to be very strict. It is because it is too late, and it is also criticized by the same industry. Concurrency is obviously inferior to Oracle. The main reason is the design of
This article will introduce you to the new Optimistic Locking feature of DB2 database 9, which enables DB2 to retrieve rows in a specific period of time and understand their last modification time, with good auxiliary effect.
DB2 for z/OS customers
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