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What are some advantages of a server in a computing environment?
Some advantages or running a server are * Centralised Print Management * Username and Password control * Centralised Backup * Control of workstations, for example with Microsoft Active Directory and Group Policy * Servers usually have better redundancy, for example hot swap hard drives and fail over network cards * Server software, for example Microsoft Exchange and SQL Server can only be run on servers. Not all server services need a server, for example MySQL can be run on a WindowsXP computer without restriction, whereas Microsft Exchange will only run on a server.
Why more oracle redo's are generated during online backup?
There is not excessive redo generated, there is additional information logged into the online redo log during a hot backup the first time a block is modified in a tablespace that is in hot backup mode. in hot backup mode only 2 things are different: o the first time a block is changed in a datafile that is in hot backup mode, the ENTIRE BLOCK is written to the redo log files, not just the changed bytes. Normally only the changed bytes (a redo vector) is written. In hot backup mode, the entire block is logged the FIRST TIME. This is because you can get into a situation where the process copying the datafile and DBWR are working on the same block simultaneously. Lets say they are and the OS blocking read factor is 512bytes (the OS reads 512 bytes from disk at a time). The backup program goes to read an 8k Oracle block. The OS gives it 4k. Meanwhile -- DBWR has asked to rewrite this block. the OS schedules the DBWR write to occur right now. The entire 8k block is rewritten. The backup program starts running again (multi-tasking OS here) and reads the last 4k of the block. The backup program has now gotten an impossible block -- the head and tail are from two points in time. We cannot deal with that during recovery. Hence, we log the entire block image so that during recovery, this block is totally rewritten from redo and is consistent with itself at least. We can recover it from there. o the datafile headers which contain the SCN of the last completed checkpoint are NOT updated while a file is in hot backup mode. This lets the recovery process understand what archive redo log files might be needed to fully recover this file. To limit the effect of this additional logging, you should ensure you only place one tablepspace at a time in backup mode and bring the tablespace out of backup mode as soon as you have backed it up. This will reduce the number of blocks that may have to be logged to the minimum possible.
Who plays in pink's backup band?
hot chale ray
What are the specifications of a file server?
1GHZ - 2GHZ MHz processor (Intel Xeon Processor) 512 MB- 2 GBRAM memory 40- 120 gig IDE / SCSI Hot swappable disk drive 56k modem DVD Ram IDE drive 10-20 Backup Disks .net (2003)Operating System Battery Backup
Can Veritas Backup Exec 10.0 do the backup for oracle database?
Yes. 2 options: 1) Cold backup, pre-script to stop oracle, post script to start up oracle again. 2) Hot backup, use oracle agent for backup exec.
Which backup site would require frequent testing to ensure a smooth switch-over in the event of an emergency?
backup site would require frequent testing to ensure a smooth switchover in the event of an emergency?
How will you know if your PC is in deep freeze mode?
if it is hot.
Which types of backups you can take in Oracle?
Cold(offline) backup / Hot (Online) backup, Logical backups using Exp and imp client utilities, RMAN Backups.
Which backup site would have no or very limited equipment Hot site Warm site Cold site or Mirrored site?
hot site
How many cell phone dose hot dog princesses have in adventurer time?
6. And then her backup
What was the Wizard of Oz's transportation mode?
A hot air balloon.
What is the best backup strategy?
Backup Strategy/Plan A deal Data backup strategy includes steps ranging from selecting the right data to conducting a drill test data restoration. Identifying the critical business data Every organization has an abundance of Data backup strategy. The critical of the data is based on the importance it serves to the organization. It requires analyzing and deciding which information is more important to the organization’s proper functioning.Therefore, an organization should identify critical data or files that require backup. Selecting the backup media Choosing the best Data backup strategy media is a common concern within most organizations. Backup media selection depends on the type and amount of data the backup will consist of. With a better and well thought out plan, selecting the proper media enables a better lever of data backup. Whereas the selection of the wrong media device leads to the segregation of data to many different media devices. Selecting a backup technology Choosing proper backup technology plays a major role in backup strategy planning. Organizations need to select proper backup technology that acquires the ability to restore, recover and maintain the availability of its services whenever needed. Selecting the appropriate RAID levels Many organizations depend on RAID technology for handling their critical backup needs, especially with the increases in data flow and data volume. Organizations are expanding their networks in order to improve their productivity in the market. However, this additional increase can cause network bottlenecks. Selecting an appropriate backup method Organizations can choose any backup method depending on their budget and IT infrastructure. The different types of data backup methods are: Selecting an appropriate backup method • Hot backup A hot backup is a popular type of backup method. It is also called as dynamic backup or active backup. In a hot backup, the system continues to perform the backup process even if the user is accessing the system. Implementation of a hot backup in an organization, avoids downtime. • Cold backup A cold backup is also called an offline backup. The cold backup takes place when the system is not working or is not accessible by users. A cold backup is the safest method of backup as it avoids the risk of copying the data. A cold backup involves downtime, as the users cannot use the machine until the process is back online. Closing the right backup solution Choosing an appropriate backup solution is essential for efficient and effective backups. Data loss is avoidable to an extent with excellent backup solutions. 7 .Conducting a recovery drill test An organization performs a drill test to validate it has a foolproof and updated DR plan. Having chosen the appropriate backup solution, it is advised to perform a recovery drub test at least once or twice a year, depending on the size of the organization.
