Using this method, the ORA_ROWSCN would be returned along with the the data from the initial query. It is then passed along with the modified data in order to check for changes to the SCN since the initial query
Summary: Based on XTC, we have redesigned, reimplemented, and reoptimized BrackitDB, a native XML DBMS (XDBMS). Inspired by "optimal" concurrency gained on XTC using the taDOM protocol, we applied an XML benchmark on BrackitDB running now on a substantially different computer platform. We ...
Strict 2 phase locking Protocol:All exclusive mode locks are taken by a transaction must be unlocked after commit. However we don’t bother about shared locks. Using this method schedule will be recoverable and cascade less. Rigorous 2 Phase Locking Protocol:All locks must be hold until the tr...
However, this method is being blocked by the database lock associated with the first start-up transaction. The database sees a simple blocking situation, as does the JVM. However, this problem will never resolve and the system never starts up....
Yasmin Akbar-Husain and Eoin Lane show how to construct an optimistic locking solution that produces transactionally safe EJB code, portable across all application servers. The authors implement the solution in a versioned entity bean for fail-safe concu
This method has some drawbacks - if user A locks a record, and then leaves his computer and goes to the lunch, the record remains locked and no one can make changes to this row. In the second method - optimistic locking - the row is not locked, but an application retrieves data ...
Locking method and computer system in a process of shared resources in a computer system PURPOSE: To strengthen the operation by locking shared resources at a computer system inside a process. SD Hamasurei,スコット デイヴィッド ハマスレイ,AD Sumetsuto,... 被引量: 0发表: 1997年 加载更...
If there's a method for running these sql statements with less overhead, I'm listening, just as long as you don't tell me I'd have to copy/paste to the command line. Additionally, I believe the cost of using CTAS vs insert was with memory use. Alas, my strength is SQL in ...
1. A processor-implemented method of directing a database management system to lock data in a database, comprising: providing a first locking level for individually locking blocks of data that are physically clustered by dimension, in a multi-dimensionally clustered table contained in the database...
6.The system of claim 1, wherein at least a portion of the database remain accessible in response to the lock of the set of data. 7.A computer-implemented method comprising:generating, by a processor, an object that specifies:a set of data from the database,a set of dependencies associ...