Row Size

I need a tuple with 50k in size. I already know how to
change the size and make it bigger. But I'm not sure
about the maximum size it supports. Does anyone ever
used a row size greater than 32k?

From the TOAST page (http://www.postgresql.org/projects/devel-toast.html),

"The PostgreSQL database system has a very old, deeply hardwired
limitation. It is the fact, that each row of every table must fit into the
on-disk blocksize, which is 8K by default. Unfortunately, changing the
blocksize has a number of unwanted side effects, and currently blocksizes
are limited to a maximum of 32K. So this cannot be the solution. "

You'll have to use long objects, or the TOAST stuff.

steve

[Charset iso-8859-1 unsupported, filtering to ASCII...]

I need a tuple with 50k in size. I already know how to
change the size and make it bigger. But I'm not sure
about the maximum size it supports. Does anyone ever
used a row size greater than 32k?

From the TOAST page (http://www.postgresql.org/projects/devel-toast.html),

"The PostgreSQL database system has a very old, deeply hardwired
limitation. It is the fact, that each row of every table must fit into the
on-disk blocksize, which is 8K by default. Unfortunately, changing the
blocksize has a number of unwanted side effects, and currently blocksizes
are limited to a maximum of 32K. So this cannot be the solution. "

You'll have to use long objects, or the TOAST stuff.

And you'll find a first TOAST snapshot at

http://www.postgresql.org/~wieck

It's not ready for production, and it only toasts a yet user
defined CLOB data type (that's coming with the snapshot). But
it does a fair job on it so far.

Tell me a little more about your needs and especially the
time constraints of your project. I would like to have a
small number of users with a need for that stuff right now.
It shouldn't be mission critical data. But it's the best time
to tackle basic conceptual mistakes.

In return you probably get a patch to apply on the 7.0
release and already have anything you'd have to wait for
until 7.1 otherwise.

Jan

--

#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me. #
#========================================= wieck@debis.com (Jan Wieck) #