Oracle does not allow replicating files between data centers, so keeping transaction log in database allows for replication.
Many transactions in WebLogic are database centric, so keeping log in database makes Two Phase Commit protocol possible.
It obviates the need to keep in sync two replication technologies (file and database) between data centers. The single replication technology is used for frequently changing data.
Transaction log in a file system is extremely slow so it cannot be efficiently replicated.
第1题:
Integration between ()with "multi data sources" and() is defined as Gridlink for RAC (Real Application Clusters)
第2题:
You are in the middle of a transaction updating a very important table. The machine on which a database wasrunning reboots because of power outage. This caused a database instance failure. Which statement is true inthis situation()
第3题:
You are the administrator of a SQL Server 2000 computer. The server contains a database named Acct. You purge the Acct database of old records and perform. a full backup. The database now uses 4 GB of space. The database files are configured as shown in the Acct Properties exhibit.
The server has two hard disks that are configured as shown in the Server Configuration exhibit.
The 3 GB transaction log file for the Acct database is stored on drive C. You need to make room for a new database that has a 3 GB data file and a 1 GB transaction log file. You want to optimize database performance on both databases. You also want to minimize administrative overhead.
What should you do?
A.Shrink the empty data file on drive E. Place the new data file and the new log file on drive E.
B.Shrink the empty data file on drive E. Backup and shrink the log file on drive C to 2 GB. Place the new data file on drive E and the new log file on drive C.
C.Shrink the data file on drive D to 1 GB, and then shrink the data file on drive E to 2 GB. Place the new data file on drive D and the new log file on drive E.
D.Shrink and delete the data file on drive C, and then shrink the database files on drives D and E so that they are both 2 GB. Place the new data file and the new log file on drive C.
第4题:
What is the architectural benefit of keeping WebLogic Server transaction log in the database?()
第5题:
Which new key architectural element introduced in WebLogic Server l2c should you take advantage of when designing Disaster Recovery Centers with active - passive mode?()
第6题:
You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. There is a database named DB1 in the instance. The company stores clients data in DB1. Clients can access their profile data by using a Web application. You must ensure the security of the customer data, you must ensure that even if the backup media is lost, data files, log files and subsequent backups and so on are quite safe. So what action should you perform to achieve this goal?()
第7题:
Integration between () multidata sources and () is defined as the Grid Link for RAC.
第8题:
You are the administrator of a SQL Server 2000 computer. You are configuring a database for an inventory application. The hard disks on your server are configured as shown in the exhibit.
The operating system files are located on drive C. Your database will store a maximum of 6 GB of data and requires a maximum of 2 GB of disk space for the transaction log.
You want to optimize database performance. What should you do?
A.Add a 2-GB transaction log to drive D, a 3-GB data file to drive E, and a 3-GB data file to drive F
B.Add a 1-GB transaction log to drive C, a 1-GB transaction log to drive D, a 3-GB data file to drive E, and a 3-GB data file to drive F
C.Add a 1-GB transaction log to drive E, a 1-GB transaction log to drive F, a 3-GB data file to drive E, and a 3-GB data file to drive F
D.Add a 2-GB transaction log to drive F, a 3-GB data file to drive D, and a 3-GB data file to drive E
第9题:
Which two statements about the background process of the database writer are true()
第10题:
A customer has a critical, performance-sensitive web application that connects to a multimode Oracle RAC database. Which feature of WebLogic can provide signification benefit?()