rather than deleting them only to have to create more. Steady state
is 2*CHECKPOINT_SEGMENTS + WAL_FILES + 1 segment files, which will
simply be renamed rather than constantly deleted and recreated.
To make this safe, added current XLOG file/offset number to page
header of XLOG pages, so that an un-overwritten page from an old
incarnation of a logfile can be reliably told from a valid page.
This change means that if you try to restart postmaster in a CVS-tip
database after installing the change, you'll get a complaint about
bad XLOG page magic number. If you don't want to initdb, run
contrib/pg_resetxlog (and be sure you shut down the old postmaster
cleanly).
redirections between the build files, which didn't work completely. Now
you just go to the directory of your choice and run make. Clean up the
build files to have a logical order, fix the unnecessary rebuilds, prevent
the deleting targets from removing files they're not responsible for. Ant
1.3 does not have a bug. It deletes directories just fine if you follow
the documentation.
Oracle database to PostgreSQL.
It currently dump the database schema (tables, views, sequences,
indexes, grants), with primary, unique and foreign keys into PostgreSQL
syntax without editing the SQL code generated. You can dump only a
particular schema from the Oracle database.
Functions, procedures and triggers with SQL or PLSQL code generated must
be reviewed to match the PostgreSQL syntax. Some usefull recommandation
on porting Oracle to PostgreSQL can be found at
http://techdocs.postgresql.org/
under the "Converting from other Databases to PostgreSQL" Oracle part. I
just
notice one thing more is that the trunc() function in Oracle is the same for
number
or date so be carefull when porting to PostgreSQL to use trunc() for number
and
date_trunc() for date.
I will add more precision in type NUMBER conversion based on length to match
as closest as possible all rich PostgreSQL numerics type. But it seems not to be
urgent as it seems that Oracle DBAs only create number with length 22 (default)
Space seems not to be their problem...
Gilles DAROLD
around. I tested this patch under Cygwin and Linux.
Note that I only changed dblink's Makefile in the most minimal way
to fix the link problem under Cygwin (i.e., use the link rule from
Makefile.shlib instead). dblink's Makefile should probably be further
patched to be consistent with the other PostgreSQL Makefiles.
Jason Tishler
Cygwin with the possible exception of mSQL-interface. Since I don't
have mSQL installed, I skipped this tool.
Except for dealing with a missing getopt.h (oid2name) and HUGE (seg),
the bulk of the patch uses the standard PostgreSQL approach to deal with
Windows DLL issues.
I tested the build aspect of this patch under Cygwin and Linux without
any ill affects. Note that I did not actually attempt to test the code
for functionality.
The procedure to apply the patch is as follows:
$ # save the attachment as /tmp/contrib.patch
$ # change directory to the top of the PostgreSQL source tree
$ patch -p0 </tmp/contrib.patch
Jason
checkpoint's redo pointer, not its undo pointer, per discussion in
pghackers a few days ago. No point in hanging onto undo information
until we have the ability to do something with it --- and this solves
a rather large problem with log space for long-running transactions.
Also, change all calls of write() to detect the case where write
returned a count less than requested, but failed to set errno.
Presume that this situation indicates ENOSPC, and give the appropriate
error message, rather than a random message associated with the previous
value of errno.
in c.h we should be using the visible structure. We should only see
de-TOASTed values in this program. The old method refused to compile
because the length macro was no longer an lvalue.
> Postgres 7.1.0), and I think I've found a bug.
>
> I compiled Pgcrypto with OpenSSL, using gcc 2.95.4 and
> OpenSSL 0.9.6a (the latest Debian 'unstable' packages).
> web=> select encode(digest('blah', 'sha1'), 'base64');
> FATAL 1: pg_encode: overflow, encode estimate too small
> pqReadData() -- backend closed the channel unexpectedly.
> This probably means the backend terminated abnormally
> before or while processing the request.
> The connection to the server was lost. Attempting reset: Succeeded.
> Is this a bug? Can it be fixed?
This is a bug alright. And a silly one :)
Marko Kreen
a PostgreSQL user-defined function. The Metaphone system is a method of
matching similar sounding names (or any words) to the same code.
Metaphone was invented by Lawrence Philips as an improvement to the popular
name-hashing routine, Soundex.
This metaphone code is from Michael Kuhn, and is detailed at
http://aspell.sourceforge.net/metaphone/metaphone-kuhn.txt
Joel Burton
because we need page LSNs stored in the main database to be less than
the current XLOG position. Hence, generate the new XLOG segment at last
old segment number plus one.
