Re: 8i Concept PCTFREE & PCTUSED are 0
I don't think this is true anymore. At one time, PCTUSED had to be set to "1", but as of 8i, at least, it will be put back on the freelist when empty if PCTUSED=0. (I haven't tested it myself, but I believe Dave Ensor.) -Don Granaman [OraSaurus] - Original Message - To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Monday, February 18, 2002 6:38 AM > Hello Sinardy > > PCTUSED means that: > After a block was filled with records and the free space in the block > is less then pctfree the block is no longer available for further inserts. > If however, the data falls beneath PCTUSED the block became again > available for inserts. > > In your example, block will never again became available, even if empty, > because: After a data block becomes full as determined by PCTFREE, Oracle > does not consider the block for the insertion of new rows until the > percentage of the block being used falls below the parameter PCTUSED. > > > Yechiel Adar, Mehish Computer Services > [EMAIL PROTECTED] -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Don Granaman INET: [EMAIL PROTECTED] Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051 San Diego, California-- Public Internet access / Mailing Lists To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
RE: 8i Concept PCTFREE & PCTUSED are 0
Hi Long,
Do you mean Oracle should come with AI capability ?
then Oracle will be very buggy and Oracle Concept Doc will be the last SOS.
With current version I think Oracle is good in general but certainly not
ready for AI.
Sinardy
-Original Message-
[EMAIL PROTECTED]
Sent: 19 February 2002 09:54
To: Multiple recipients of list ORACLE-L
Hi,
This is an offside comment rather than a direct reply to Sinard's question.
Oracle has made many config parameters tuneable and this makes the software
both flexible and complex. On the other hand MS's SQLServer only has a small
number of
config parameters that could be changed by DBA (about 5 or so in SQLServer
7) which makes the software easier to manage but not very tuneable. I woule
prefer to see s'where in the middle where Oracle could reduce the number of
config
parameters so its environment is easier to manage. For example it is all
good to have pctfree and pctused parameters to play with, but I just wonder
what is the percentage of developers who have actually thought about these
in advance and
set them up "appropriately" for their applications. And also once they have
set the values for pctused and pctfree, did they actually monitor the space
usage to see if the values used are in fact appropriate? Why don't Oracle
work more
intelligent and manage space smartly without the requirement of developers
setting these parameters. Another example is the pinning of dbms_standard
package. If it is commonly used then Oracle should pin it automatically
every time the db
is started up instead of leaving this decision in the hand of DBAs.
My 2c comments.
What do you reckon?
Long
-Original Message-
Sent: Monday, 18 February 2002 11:38 PM
To: Multiple recipients of list ORACLE-L
Hello Sinardy
PCTUSED means that:
After a block was filled with records and the free space in the block
is less then pctfree the block is no longer available for further inserts.
If however, the data falls beneath PCTUSED the block became again
available for inserts.
In your example, block will never again became available, even if empty,
because: After a data block becomes full as determined by PCTFREE, Oracle
does not consider the block for the insertion of new rows until the
percentage of the block being used falls below the parameter PCTUSED.
Yechiel Adar, Mehish Computer Services
[EMAIL PROTECTED]
> -Original Message-
> From: Sinard Xing [SMTP:[EMAIL PROTECTED]]
> Sent: Mon, February 18, 2002 11:08 AM
> To: Multiple recipients of list ORACLE-L
> Subject: 8i Concept PCTFREE & PCTUSED are 0
>
> Hi all,
>
> Oracle 8i (81600)
>
> I create user Panadol and give unlimited quota on TBS.
>
> as Panadol I create 1 table like this:
>
> SQL> CREATE TABLE mytable(
> 2 col1 char(3),
> 3 col2 char(4),
> 4 col4 varchar2(4)
> 5 )
> 6 PCTFREE 0
> 7 PCTUSED 0
> 8 STORAGE (
> 9INITIAL 20K
> 10NEXT 20K
> 11PCTINCREASE 0
> 12MAXEXTENTS 10
> 13 )
> 14 ;
>
> Table created.
>
> SQL> insert into mytable values('abc', 'abcd', 'a');
>
> 1 row created.
>
> SQL> commit;
>
>
> I don't understand That table PCTUSED is 0 ? where Oracle keep those
> data ?
>
> Look at this:
>
> SQL> select * from mytable;
>
> COL COL2 COL4
> ---
> abc abcd a
>
>
>
> Sinardy
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Sinard Xing
> INET: [EMAIL PROTECTED]
>
> Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California-- Public Internet access / Mailing Lists
>
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
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Author:
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RE: 8i Concept PCTFREE & PCTUSED are 0
Hi,
This is an offside comment rather than a direct reply to Sinard's question. Oracle has
made many config parameters tuneable and this makes the software both flexible and
complex. On the other hand MS's SQLServer only has a small number of
config parameters that could be changed by DBA (about 5 or so in SQLServer 7) which
makes the software easier to manage but not very tuneable. I woule prefer to see
s'where in the middle where Oracle could reduce the number of config
parameters so its environment is easier to manage. For example it is all good to have
pctfree and pctused parameters to play with, but I just wonder what is the percentage
of developers who have actually thought about these in advance and
set them up "appropriately" for their applications. And also once they have set the
values for pctused and pctfree, did they actually monitor the space usage to see if
the values used are in fact appropriate? Why don't Oracle work more
intelligent and manage space smartly without the requirement of developers setting
these parameters. Another example is the pinning of dbms_standard package. If it is
commonly used then Oracle should pin it automatically every time the db
is started up instead of leaving this decision in the hand of DBAs.
My 2c comments.
What do you reckon?
Long
-Original Message-
Sent: Monday, 18 February 2002 11:38 PM
To: Multiple recipients of list ORACLE-L
Hello Sinardy
PCTUSED means that:
After a block was filled with records and the free space in the block
is less then pctfree the block is no longer available for further inserts.
If however, the data falls beneath PCTUSED the block became again
available for inserts.
In your example, block will never again became available, even if empty,
because: After a data block becomes full as determined by PCTFREE, Oracle
does not consider the block for the insertion of new rows until the
percentage of the block being used falls below the parameter PCTUSED.
Yechiel Adar, Mehish Computer Services
[EMAIL PROTECTED]
> -Original Message-
> From: Sinard Xing [SMTP:[EMAIL PROTECTED]]
> Sent: Mon, February 18, 2002 11:08 AM
> To: Multiple recipients of list ORACLE-L
> Subject: 8i Concept PCTFREE & PCTUSED are 0
>
> Hi all,
>
> Oracle 8i (81600)
>
> I create user Panadol and give unlimited quota on TBS.
>
> as Panadol I create 1 table like this:
>
> SQL> CREATE TABLE mytable(
> 2 col1 char(3),
> 3 col2 char(4),
> 4 col4 varchar2(4)
> 5 )
> 6 PCTFREE 0
> 7 PCTUSED 0
> 8 STORAGE (
> 9INITIAL 20K
> 10NEXT 20K
> 11PCTINCREASE 0
> 12MAXEXTENTS 10
> 13 )
> 14 ;
>
> Table created.
>
> SQL> insert into mytable values('abc', 'abcd', 'a');
>
> 1 row created.
>
> SQL> commit;
>
>
> I don't understand That table PCTUSED is 0 ? where Oracle keep those
> data ?
>
> Look at this:
>
> SQL> select * from mytable;
>
> COL COL2 COL4
> ---
> abc abcd a
>
>
>
> Sinardy
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Sinard Xing
> INET: [EMAIL PROTECTED]
>
> Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California-- Public Internet access / Mailing Lists
>
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> This e-mail was scanned by the eSafe Mail Gateway
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
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(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author:
INET: [EMAIL PROTECTED]
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RE: 8i Concept PCTFREE & PCTUSED are 0
Hello Sinardy
PCTUSED means that:
After a block was filled with records and the free space in the block
is less then pctfree the block is no longer available for further inserts.
If however, the data falls beneath PCTUSED the block became again
available for inserts.
In your example, block will never again became available, even if empty,
because: After a data block becomes full as determined by PCTFREE, Oracle
does not consider the block for the insertion of new rows until the
percentage of the block being used falls below the parameter PCTUSED.
Yechiel Adar, Mehish Computer Services
[EMAIL PROTECTED]
> -Original Message-
> From: Sinard Xing [SMTP:[EMAIL PROTECTED]]
> Sent: Mon, February 18, 2002 11:08 AM
> To: Multiple recipients of list ORACLE-L
> Subject: 8i Concept PCTFREE & PCTUSED are 0
>
> Hi all,
>
> Oracle 8i (81600)
>
> I create user Panadol and give unlimited quota on TBS.
>
> as Panadol I create 1 table like this:
>
> SQL> CREATE TABLE mytable(
> 2 col1 char(3),
> 3 col2 char(4),
> 4 col4 varchar2(4)
> 5 )
> 6 PCTFREE 0
> 7 PCTUSED 0
> 8 STORAGE (
> 9INITIAL 20K
> 10NEXT 20K
> 11PCTINCREASE 0
> 12MAXEXTENTS 10
> 13 )
> 14 ;
>
> Table created.
>
> SQL> insert into mytable values('abc', 'abcd', 'a');
>
> 1 row created.
>
> SQL> commit;
>
>
> I don't understand That table PCTUSED is 0 ? where Oracle keep those
> data ?
>
> Look at this:
>
> SQL> select * from mytable;
>
> COL COL2 COL4
> ---
> abc abcd a
>
>
>
> Sinardy
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Sinard Xing
> INET: [EMAIL PROTECTED]
>
> Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California-- Public Internet access / Mailing Lists
>
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> This e-mail was scanned by the eSafe Mail Gateway
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: =?iso-8859-8?Q?=E0=E3=F8_=E9=E7=E9=E0=EC?=
INET: [EMAIL PROTECTED]
Fat City Network Services-- (858) 538-5051 FAX: (858) 538-5051
San Diego, California-- Public Internet access / Mailing Lists
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
