More Bytes returned from Image Data Type

I have a field set to Image data type, and store a long string(possible othe
r
objects)into it with size 5663, and returned with 5663+28 bytes.
These strings wil be deserialized after retrieving. However failde because
the bytes seems to include some extra bytes with \0 and 0x01 and have 28 mor
e
bytes ahead of the original string.
How could I deal with it? Just remove the first 28 bytes? It this method
formal? I had thought the returned bytes should have the same size with the
one I stored into, it seems not, am I right?
Thanks.BOL talks about "BLOBs and OLE Objects" and the normal process for images wa
s
to read in "chunks" (e.g. Sussman's ADO 2.6 Wrox book), but now should use
Stream object instead - check your doc [you omitted to say what
language/version you were using]
HTH
Dick
"zhaounknown" wrote:

> I have a field set to Image data type, and store a long string(possible ot
her
> objects)into it with size 5663, and returned with 5663+28 bytes.
> These strings wil be deserialized after retrieving. However failde because
> the bytes seems to include some extra bytes with \0 and 0x01 and have 28 m
ore
> bytes ahead of the original string.
> How could I deal with it? Just remove the first 28 bytes? It this method
> formal? I had thought the returned bytes should have the same size with th
e
> one I stored into, it seems not, am I right?
> Thanks.|||I am using C#, in .Net framework 1.1.
What documentation I shoudl refer to, since I can't find one addressing
this, partly because I am new to the BLOB data type.
However, how the underlying BLOB field is implemented doesn't matter to the
queried result for a BLOB field, is that right?
Please give more detailed guidance for this.
Thank you very much.
"Dick in UK" wrote:
> BOL talks about "BLOBs and OLE Objects" and the normal process for images
was
> to read in "chunks" (e.g. Sussman's ADO 2.6 Wrox book), but now should use
> Stream object instead - check your doc [you omitted to say what
> language/version you were using]
> HTH
> Dick
> "zhaounknown" wrote:
>

Monitoring Disk activity

Whats the best perfmon counter to use to check how many
bytes are being read and written to disk/sec ?
I know most of the read and writes take place within a
virtual buffer cache, but what triggers a read/write from
disk .. I am currently running SQL 2000 if that helpsThe Physical Disk: Bytes Read(and Write) / Sec will give you just that. You
can also use fn_virtualfilestats() to get totals.
--
Andrew J. Kelly SQL MVP
"Jamie" <anonymous@.discussions.microsoft.com> wrote in message
news:23a5a01c45ecc$0b2044e0$a301280a@.phx.gbl...
> Whats the best perfmon counter to use to check how many
> bytes are being read and written to disk/sec ?
> I know most of the read and writes take place within a
> virtual buffer cache, but what triggers a read/write from
> disk .. I am currently running SQL 2000 if that helps|||Hi,
Add on, Have a look into this link.
http://www.sql-server-performance.com/performance_monitor_counters_io.asp
Thanks
Hari
MCDBA
"Andrew J. Kelly" <sqlmvpnooospam@.shadhawk.com> wrote in message
news:#bLPn2sXEHA.2816@.TK2MSFTNGP11.phx.gbl...
> The Physical Disk: Bytes Read(and Write) / Sec will give you just that.
You
> can also use fn_virtualfilestats() to get totals.
> --
> Andrew J. Kelly SQL MVP
>
> "Jamie" <anonymous@.discussions.microsoft.com> wrote in message
> news:23a5a01c45ecc$0b2044e0$a301280a@.phx.gbl...
> > Whats the best perfmon counter to use to check how many
> > bytes are being read and written to disk/sec ?
> >
> > I know most of the read and writes take place within a
> > virtual buffer cache, but what triggers a read/write from
> > disk .. I am currently running SQL 2000 if that helps
>|||I generally start off by observing Physical Disk queue length counters as
this tells you whether the disk subsystem is keeping up with the i/o
requests made by sql (or other apps on the same box) through windows. This
is because i/o requests are queued by windows against the i/o subsystem and
if that queue is too large (more than a few i/o's per phsyical disk) or
growing, you have a clear indication that the disk is a bottleneck (not
keeping up).
If you do see a problem here, you next need to ascertain whether the amount
of work being sent to the disk is excessive, due to inefficient query plans
etc.
HTH
Regards,
Greg Linwood
SQL Server MVP
"Jamie" <anonymous@.discussions.microsoft.com> wrote in message
news:23a5a01c45ecc$0b2044e0$a301280a@.phx.gbl...
> Whats the best perfmon counter to use to check how many
> bytes are being read and written to disk/sec ?
> I know most of the read and writes take place within a
> virtual buffer cache, but what triggers a read/write from
> disk .. I am currently running SQL 2000 if that helps

Monitoring a SSAS Server

When monitoring a SQL Server, the perfomanceindicators is something like:

Memory — Pages/Sec, Network Interface — Bytes Total/sec, PhysicalDisk — % Disk Time — _Total and so on.

Is there something else specific to monitor when looking at a Analysis Services Server ?

Yes, of course you can add a lot of counters about MDX, memory, locks, proactive caching and so on.

Try to have a look!

|||Ok, but you have a link or whitepaper telling a little more in detail ?|||

I don't remember a specific whitepaper.

You can find something more detailed in "AS2005 Performance Guide" that is available for download here:

http://download.microsoft.com/download/8/5/e/85eea4fa-b3bb-4426-97d0-7f7151b2011c/SSAS2005PerfGuide.doc