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- Newsgroups: comp.databases.sybase
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!sunova!higgs.ssc.gov!jbaron
- From: jbaron@higgs.ssc.gov (Jeff Baron)
- Subject: Re: syslogs
- Message-ID: <1993Jan22.192334.16373@sunova.ssc.gov>
- Sender: usenet@sunova.ssc.gov (News Admin)
- Nntp-Posting-Host: higgs.ssc.gov
- Reply-To: jbaron@higgs.ssc.gov (Jeff Baron)
- Organization: Superconducting Super Collider Lab
- References: <C0wL3t.460@cmptrc.lonestar.org> <28244@sybase.sybase.com> <1993Jan22.180412.8847@odin.corp.sgi.com>
- Date: Fri, 22 Jan 1993 19:23:34 GMT
- Lines: 36
-
- Lee McGee writes:
-
- - Why this command is not available to users is a _mystery_ to me.
- - It is extraordinarily useful for analysis of the update behavior of
- - application SQL - (what? inserting 10 rows causes HOW MUCH physical
- - IO? WHY?) - somehing that every Sybase database administrator in
- - the land ought to have access to.
-
- and
-
- - This group ought to demand to Sybase that "dbcc log", and any other
- - benign technique that might by highly useful to the user community,
- - be published for general use. It does not matter whether Sybase
- - log formats are confidential or not, and frankly the log format
- - should be of no concern to the user. What does matter is that we
- - are able to report on log contents, for problem analysis.
-
- Oh sure. Do we think that the log is a valuable part of the Sybase
- product? Do we think that Sybase itself has some vested interest in
- protecting its product? Do *other* companies give out data structure
- definitions (and source code?) for their products? Do you think that
- if you *demand* something that it will happen, regardless of the
- unreasonableness of the request?
-
- The log serves two purposes. To recover from software failures, such
- as an OS crash, and to recover from hardware, or disk, failures.
-
- How do you expect it to provide you with information about performance
- analysis in the case of your 10-update example? Do you think that the
- log contains information about the physical disk i/o involved in this
- command, such as the time spent waiting, or the other pages that were
- *read* while doing the update? I don't think so.
-
- --
- Jeff Baron
- jbaron@gauss.ssc.gov
-