Comparison of concurrency control (LOCK) between DB2 and Oracle
Comparison of concurrency control (LOCK) between DB2 and Oracle
1 Introduction
The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and
Today, the customer visited (Japanese) and asked me the difference between DB2 and Oracle. Because it's not a DBA, I haven't really summed it up. But my first feeling: One is instance, one is database. Building Ora libraries and DB2 libraries is not
1 Introduction
The minimal recovery and transaction units in relational databases (DB2, Oracle, Sybase, Informix, and SQL Server) are a transaction (Transactions). Transactions are ACID (atomicity, consistency, isolation, and durability) feature. In
1 Introduction
In relational databases (Db2,oracle,sybase,informix and SQL Server) the smallest recovery and transaction units are one transaction (transactions), and transactions have acid (atomicity, consistency, isolation, and permanence)
Check archiving processing View Log Archive status DB2 "Select Date (CAST (start_time as TIMESTAMP)) as DATE, COUNT (*) as Number_of_logs_per_day, (Count (*) *23.4375) as AMOUNT_LOGS_DAY_MB, Dbpartitionnum as Dbpart From Sysibmadm. Db_history WHERE
I feel that the answers to many basic questions can be obtained through the help of DB2, because DB2 itself has very detailed help information after installation, so I think it is necessary to summarize how to get help from the DB2 command syntax!
Comparison | program
Brief introduction
In the view of. NET application developers, using DB2 is no different from using any other relational database. You can see countless examples of using SQL Server and Oracle products to perform database tasks,
The db2 tutorial is: Daily maintenance Summary of IBM DB2 (6 ). 91. How to Create a summary table of DB2?
The overview table function of DB2 is similar to the materialized view of ORACLE!
Syntax:
CREATESUMMARYTABLETABLE_NAMEAS (FULLSELECT )...
For
DB2 supports the following two types of tablespaces:1. System Management Memory table space (Sms-system MANAGED STORAGE)2. Database Management Memory table space (Dms-database MANAGED STORAGE)Comparison of characteristics of SMS and DMS user table
[Posting] DB2 partition features
Data Warehouse scenario overviewLevel: Intermediate
Paul McInerney (paulmci@ca.ibm.com), user-centric design expert, DB2 development, IBM
September 18, 2006
This article introduces the following table design features
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