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
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)
1, Concept descriptionThe so-called lock upgrade (lock escalation), is a mechanism of the database, in order to save memory overhead, it will be a large number of high-resource-intensive fine-grained locks into a small amount of relatively small
analysis and explanation of DB2 lock problemLock timeouts and deadlocks are often encountered in DB2 applications, so what is the cause of this phenomenon? In this paper, the phenomenon of lock waiting, lock time-out and deadlock is simulated in the
The DB2 lock mechanism plays an important role in the DB2 database. Let's take a look at what the DB2 lock mechanism is.
In relational databases DB2, Oracle, Sybase, Informix, and SQL Server, the minimal recovery and transaction unit is a
analysis and explanation of DB2 lock problemDB2 applications often encounter lock timeouts and deadlocks, so what is the cause of this phenomenon? In this paper, we simulate the lock waiting, lock timeout and deadlock phenomenon in the form of
The following articles mainly describe how to use DB2 V9.1for z/OS to implement application session lock, if you are interested in the actual operation steps of DB2 V9.1for z/OS to implement application session lock, you can click the following
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
Brief introduction
UNIX and Linux users typically check the processes running on their servers to perform problem analysis and to check the resources consumed in the server. This information is useful not only for administrators who perform issues
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