Re: How to check the delay in a Streams Configuration

I am not sure if there is a way to get this info from the dictionary.

However, you may want to set up a heartbeat table - sort of a dummy/tiny table that is part of your streams replication setup, that get inserts/updates to a date/timestamp field via a dbms_job every minute or so at the source. You can verify the value of this field at the target and compare this with sysdate.

In any case, having a heartbeat table would be necessary to validate/monitor the health of streams replication.

Regards,
Arul

On 7/23/06, Anurag Verma <anuragdba_at_gmail.com> wrote:
>
> Hi All,
>
>
> This is a question on Oracle 9i streams.
>
> In the table DBA_CAPTURE table, the column descriptions for the columns
> CAPTURED_SCN and APPLIED_SCN
> gives the following description in Oracle Documentation.
> ===============================================================
> CAPTURED_SCN
> NUMBER
> System change number (SCN) of the last captured message
>
> APPLIED_SCN
> NUMBER
> System change number (SCN) of the most recent message dequeued by
> the relevant apply processes. All changes below this SCN have been
> dequeued
> by all apply processes that apply changes captured by this capture
> process.
> ===============================================================
>
>
> What my doubt is that if I check the DBA_CAPTURE view in the source
> database
> for the above columns, does the column value for APPLIED_SCN give the most
> recent SCN
> that got applied in the target database ?
>
>
> I want to know whether this information can be used to immediately track
> the DELAY between the source CAPTURE process and the target APPLY process.
>
>
> Also, anybody can give me any good documentation or links for monitoring
> Streams performance ?
>
> Thanks in advance,
>
> Anurag
>

l

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