Re: Big 7.1 open items

From: "Randall Parker" <randall(at)nls(dot)net>
To: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "PostgreSQL-development" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Big 7.1 open items
Date: 2000-06-22 05:11:50
Message-ID: 05092999848341@mail.nls.net
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Tom,

A "container" can be a file or a device or a directory. Here again are examples that I already posted in
another thread:

In the first example there are 3 devices specified as containers. In the second example 3 directories are
specified as containers (DB2 therefore makes its own file names in it - and uses OIDs to do it I think). In
the third example 2 files are the 2 containers. In the fourth example 6 devices on 3 nodes are the
containers.

CREATE TABLESPACE PAYROLL
MANAGED BY DATABASE
USING (DEVICE'/dev/rhdisk6' 10000,
DEVICE '/dev/rhdisk7' 10000,
DEVICE '/dev/rhdisk8' 10000)
OVERHEAD 24.1
TRANSFERRATE 0.9

CREATE TABLESPACE ACCOUNTING
MANAGED BY SYSTEM
USING ('d:\acc_tbsp', 'e:\acc_tbsp', 'f:\acc_tbsp')
EXTENTSIZE 64
PREFETCHSIZE 32

CREATE TEMPORARY TABLESPACE TEMPSPACE2
MANAGED BY DATABASE
USING (FILE '/tmp/tempspace2.f1' 50000,
FILE '/tmp/tempspace2.f2' 50000)
EXTENTSIZE 256

CREATE TABLESPACE PLANS
MANAGED BY DATABASE
USING (DEVICE '/dev/rhdisk0' 10000, DEVICE '/dev/rn1hd01' 40000) ON NODE 1
USING (DEVICE '/dev/rhdisk0' 10000, DEVICE '/dev/rn3hd03' 40000) ON NODE 3
USING (DEVICE '/dev/rhdisk0' 10000, DEVICE '/dev/rn5hd05' 40000) ON NODE 5

On Wed, 21 Jun 2000 23:03:03 -0400, Tom Lane wrote:

>"Randall Parker" <randall(at)nls(dot)net> writes:
>> DB2 supports an ALTER TABLESPACE command that allows one to add new
>> containers to an existing tablespace. IMO, that's far more supportive
>> of 24x7 usage.
>
>Er, what do they mean by "container", and why is it better?
>
> regards, tom lane

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