Doubt on the performance mode maximum dataguard

HI gurus,

We have a dataguard environment configured in 12.1.0.2.0 on 5.6 OEL. DataGuard is configured in maximum performance using following congiguration,

18:26:26 SQL > show parameter log_archive_dest_2

VALUE OF TYPE NAME

------------------------------------ ----------- ------------------------------

string LOG_ARCHIVE_DEST_2 = TGOID NOAFFIRM LGWR ASYNC COMPRESSION service = ENABLE VALID_FOR =(ALL_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME = TGOID

Here I used LGWR ASYNC and enabled real-time apply to my waiting to help,

SQl > alter recover managed standby database disconnect log file using current;

Here are my doubts,

1. If we allow real time apply, the changes will reflect on the eve when a commit happens in elementary school. is this correct?

But here I do not see this behavior, changes are get applied to the previous day only when I do a log switch. (as in the case of the mode of transport ARCH)

2. so, if I want to get changes made to the previous day when a commit happens at the elementary level, is I need to set the following?

First of all,

ALTER system set log_archive_dest_2 = service = TGOID ASSERT LGWR SYNC COMPRESSION = ENABLE VALID_FOR = (ALL_LOGFILES, PRIMARY_ROLE) DB_UNIQUE_NAME = TGOID scope = both;

Secondly,.

ALTER DATABASE BASE_DE_DONNEES SLEEP TOGETHER IN ORDER TO MAXIMIZE THE AVAILABILITY/MAXIMIZE PROTECTION.

is this correct?

3 if its OK what is the advantage of using lgwr async in maximum performance? then, what is meant by real time applies to maximum performance?

Thank you and best regards,

Mahi

If you want the data validated to be simultaneous on two sites, use maximum availability (or maximum Protection).  The 'risk' with maximum Protection, it is that if the network link fails or breaks down the day before or the day before is not able to write it again received, the primary has put an end.  The 'advantage' (but also the 'risk' If you keep monitoring it) with maximum availability is the primary can return to maximum Performance If the night before does more (for any of the reasons stated in the first sentence)

Allow standby redo logs Oracle to write again to the backup site without waiting that the primary archive the Redo Log.  If your primary online Redo log is archived every 30 minutes and you only run on base ARCH, you may lose 30 minutes of transactions.

Hemant K Collette

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    setting the APM mode under the inactive state.
    The APM mode can be selected with a number of sector register of ALL
    Control FEATURES (EF).
    The disk complies with the three types of modes of the APM which a command
    from the host is necessary.
    EN = 05 h: enable APM
    SC = C0h - FEh: Mode-0 Active Idle? Idle low power
    SC = 80 h - BFh: Mode-1 idle assets? Low power idle (default)
    SC = 01 h - 7Fh: Mode-2 inactive assets? Low power idling? Standby
    EN = 85 h: disable APM (Game Mode-0)
    Active Idle: The head is in a position of extreme inner disc
    Middle. (VCM Lock)
    Overview of the unit
    1-14-C141-E224
    Low power Idle: the head is unloaded the disc.
    The spindle motor.
    Standby: the motor stops.
    In Mode APM-1, which is the default APM mode, operational status moves until it
    Finally reached "low power idle."
    Table 1.7 Advanced Power Management
    APM mode
    Idle assets
    (VCM Lock)
    Idle low power
    (Unloading)
    Standby
    (Spin-off)
    Mode-0 0.2 to 1.2 s min. 15 s/o
    Mode-1 0.1 to 0.2 sec 10.0 - dry 27.5 n/a
    2 mode 0, 1-0, 2 s 10.0 - dry dry 27.5 10.0 - 40, 0
    When was the maximum period during which the hard disk waiting for orders
    exceeded:
    Mode 0: Mode shifts affection Active Active Idle in 0.2 to 1.2 and low
    Inactive power in 15 minutes.
    Mode-1: Active status to Active Idle mode in 0.1 to 0.2 seconds and
    low power idle in 10.0 - 27, 5 seconds.
    Mode 2: Active status to Active Idle mode in 0.1 to 0.2 seconds and
    low power idle in 10.0 - 27, 5 seconds. After 10, 0-40, 0 seconds in
    Low power idle mode goes into sleep mode.
    Note:
    The default values for these settings are reflected in the values of WORD 91 of the
    Command IDENTIFIER. In addition, APM mode is initialized with the Mode-1
    (the default) to power off.
    The above mentioned is time until the transition to each mode of power based on the point
    that the reader becomes a State of waiting for order.

    How can I set Mode APM to disable EN = 85 h: disable the APM (Set Mode-0)

    Where do I put? Please help me.

    Hello

    You can use either the Toshiba Power Saver that controls also the APM mode or you will remove him this tool and then you will use the Windows power management.
    Here, you can change the settings for the APM mode.
    Unfortunately the other options to disable the APM Mode are not known to me.

  • Tecra A9 - compatibility/AHCI in the BIOS mode

    The Toshiba Tecra A9 seems to have a serious lack of implementation of the BIOS: it has an Intel ICH8 - M - SATA controller capable of running in Intels so-called "handset Mode" that allows it to act as a controller SATA AHCI, a normal IDE controller or mix the two for various channels.
    The BIOS allows to adjust it to the "compatibility" - mode that seems to work correctly by running in the IDE for all channels mode, but the mode "AHCI" seems to be set up wrongly. AHCI is a standard for SATA devices that is widely used and the Tecra A9 defines only the hard disk to use SATA AHCI - optical drive CD/DVD-ROM rest in IDE mode which leads to conflicts of pilots as only one driver can access the controller in DMA mode - when the value of both SATA and IDE modes, two drivers are needed for one physical chip.
    'AHCI' in the BIOS must activate the peripheral subject connected to the controller is running in SATA AHCI mode, but as I already said, it is not. Only the hard drive will be displayed as SATA device.

    For me, this looks like a defect in the BIOS that needs to be repaired.

    Best regards
    Peter

    Hello

    I think that it s perhaps a default, but you done already encountered problems with the execution of the "compatibility mode" where the CD/DVD drive (IDE ;)) works in "IDE mode"?

    Do you have a few mistakes or something similar? If so, then it s probably REALLY a bug, but if not, maybe this 'combined mode' (I know what you´re talking about my old 875P Chipset and my ICH5 have the same thing) works correctly.
    In my machine (desktop computer with a DFI Lanparty 875P and northwood at 3 Ghz) runs in the "handset mode" so that everything works to make it compatible in "IDE" mode But I Don t a loss of performance.
    It s not as fast when I drive in pure SATA mode, but then my DVD won't work.

    So, if you have problems with the machine then I agree, otherwise "it s not a bug, it s a feature" ;)

    Welcome them

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