Hi some conceptual questions

hi all
i am new in this forum and a pl/sql developer and some knowledges of storage structure of oracle.Now i want to learn dba portion including backup etc..
my questions are--
1.what is nomount and mount state of a database.
2.what is rman why we use it though we can recover database through some scripts.
3.what is archivelog mode
4.cold backup and hot backup
5.how recovery is done when control file is lost ora database crashes
pls help me

Wow............
So simple Questions you asked
you are telling you are new to PL/dev and asking core Administration part.
If you want to know all these please go through admin/recovery books.
don't ask these Questions before self search and reading

Similar Messages

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    3- Suppose there are no interfaces in java, which functionality in particular will be missing?
    4- why abstract classes? As we cannot instantiate abstract classes then what is the purpose behind all this..
    5- Is overloading a form of polymorphism? If yes, why? Because concept of polymorphism is, i believe, only possible in inheritance.

    Hi Ali,
    1- what is the purpose of java interfaces ... Dont you think that with only abstract classes we can build an application. In that case we dont require interfaces
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    5- Is overloading a form of polymorphism? If yes, why? Because concept of polymorphism is, i believe, only possible in inheritance.
    Yes, polymorphism means you have diffrent METHODS to perform the same FUNCTION.
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    Hope this will help you understand the concepts.
    Only by helping each other, we can grow

  • I have a Macbook Pro june 2011... I have 8GB ram but I only have 256mb VRAM... I've read some other questions about this and I realized... Why do I not have 560mb of VRAM since I have 8GB of RAM? Is there any way to get more VRAM to play games on steam?

    I have a Macbook Pro june 2011... I have 8GB ram but I only have 256mb VRAM...
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    The only two items that a user can change on a MBP are the RAM and HDD (Retinas not included).  You have what the unit came with and the only way you will be able to change that is to purchase a MBP with superior graphics
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  • SGA Size for 8.1.7.4 32 bit? , some Interview Questions

    Hi buddies,
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    B: Decreasing size of redo log members
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    B: When a log switch occurs
    C: When the shared pool is flushed
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    A: Oracle will manage filling data blocks with new records more actively.
    B: Oracle will manage filling data blocks with new records less actively.
    C: Oracle will leave more space free in data blocks for existing records.
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    You have granted the SELECT_MY_TABLE role to another role, called
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    Answer: Choose one of the answers that apply
    A: Setting preferences in the appropriate menu option
    B: Creating an appropriate LOGIN.SQL file
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    D: Issuing the ALTER TABLE statement
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    NOMAXVALUE
    NOCACHE
    NOCYCLE;
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    SQL statement to obtain the NEXTVAL, what will Oracle return?
    Answer: Choose one of the answers that apply
    A: 406
    B: 418
    C: 430
    D: 442

    1.-
    2.c
    3.a
    4.a
    5.c
    6.b
    7.a
    8.d
    9.b
    10.a -
    11.a
    12.c
    13.b
    14.d
    15.c
    16.a -
    17.a
    18.d
    19.c
    20.a
    21. -
    22.d
    23.b
    24.?
    hope it helps u.
    Thanks
    Kuljeet

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    > Hello all,
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    >
    >
    > 1. Can I use NFS transport protocol to poll a file
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    habeeb
    [email protected]

    Please think when you were at the beginer stage.Yes, I guess setting up a second machine under your desk and spending the next - oh I don't know - 2 months fiddling around and trying out all kinds of things is really nothing that can be asked of anyone anymore today. </sarcasm>
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    Though including RTP stack, JMF is only compatible to old RTP draft, RFC1889. I know that Sun stopped developing/supporting JMF. What is the alternative solution for JAVA RTP implementation suitable for a serious SERVER project, not just a school-term project? Has anyone thought about that or may have already moved forward? Is that any commercial or more updated Java based RTP stack currently? I searched with google. Besides jrtp, a school project, and I could not find a nice one. Majority of RTPstack implementation is C/C++. There is one active project out there, Freedom for Media in Java, that has RTP capabilities. It's obviously not from Sun, but it's the only other RTP-capable project I am aware of, other than FOBS4Java, I believe is the name of it.
    What they are suitable for is beyond my scope of knowledge, I only know of the 2 projects.
    My second question is if there is the performance analysis and comparison of JMF. I know that some client applications such as SIP-Communicator adopt JMF for media delivery. But it is for one user in one machine. I wonder if any server application has adopt JMF as media relaying layer. None that I have seen, except for various projects I've helped people with on this forum. But, if someone is asking for help on a forum with his/her server application, it probably doesn't meet the guidelines you just laid out ;-)
    I appreciate any input from this community.Sorry I don't have more to add to your inquires...

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