Re: sequences and cursors
That won't help, as the cursor would still
be held open in the pl/sql cursor cache -
despite the explicit close.
It's also more efficient to use the implicit
cursor in pl/sql for a single row fetch in
the user's version of Oracle.
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
The educated person is not the person
who can answer the questions, but the
person who can question the answers -- T. Schick Jr
One-day tutorials:
http://www.jlcomp.demon.co.uk/tutorial.html
Three-day seminar:
see http://www.jlcomp.demon.co.uk/seminar.html
UK___November
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
- Original Message -
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Sent: Tuesday, December 09, 2003 7:39 PM
What tool are you using? HAve you considered putting select from the
sequence in an explicit cursor, open it, fetch it and close it again?
What Have in mind is something like this:
declare
cursor csr is
select sai.nextval from dual;
num integer :=0;
ind integer :=10;
begin
while (ind=0) loop
open csr;
fetch csr into num;
close csr;
dbms_output.put_line('Sai is:'||num);
ind:=ind-1;
end loop;
end;
/
Here is the output:
QL /
Sai is:13
Sai is:14
Sai is:15
Sai is:16
Sai is:17
Sai is:18
Sai is:19
Sai is:20
Sai is:21
Sai is:22
Sai is:23
PL/SQL procedure successfully completed.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Jonathan Lewis
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
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also send the HELP command for other information (like subscribing).
Re: sequences and cursors
It might be held in the cursor cache, it may even be
held in session cursors cache but it will not be counted
as an open cursor. My suggestion had diagnostic purpose only.
The problem is, probably, with the tool which explicitly closes
cursors too frequently and insufficiently sized shared pool
which throws cursors out soon after they're closed.
On 12/11/2003 04:54:25 AM, Jonathan Lewis wrote:
That won't help, as the cursor would still
be held open in the pl/sql cursor cache -
despite the explicit close.
It's also more efficient to use the implicit
cursor in pl/sql for a single row fetch in
the user's version of Oracle.
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
The educated person is not the person
who can answer the questions, but the
person who can question the answers -- T. Schick Jr
One-day tutorials:
http://www.jlcomp.demon.co.uk/tutorial.html
Three-day seminar:
see http://www.jlcomp.demon.co.uk/seminar.html
UK___November
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
- Original Message -
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Sent: Tuesday, December 09, 2003 7:39 PM
What tool are you using? HAve you considered putting select from the
sequence in an explicit cursor, open it, fetch it and close it again?
What Have in mind is something like this:
declare
cursor csr is
select sai.nextval from dual;
num integer :=0;
ind integer :=10;
begin
while (ind=0) loop
open csr;
fetch csr into num;
close csr;
dbms_output.put_line('Sai is:'||num);
ind:=ind-1;
end loop;
end;
/
Here is the output:
QL /
Sai is:13
Sai is:14
Sai is:15
Sai is:16
Sai is:17
Sai is:18
Sai is:19
Sai is:20
Sai is:21
Sai is:22
Sai is:23
PL/SQL procedure successfully completed.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Jonathan Lewis
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
-
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).
Mladen Gogala
Oracle DBA
Note:
This message is for the named person's use only. It may contain confidential,
proprietary or legally privileged information. No confidentiality or privilege is
waived or lost by any mistransmission. If you receive this message in error, please
immediately delete it and all copies of it from your system, destroy any hard copies
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monitor all e-mail communications through its networks.
Any views expressed in this message are those of the individual sender, except where
the message states otherwise and the sender is authorized to state them to be the
views of any such entity.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Mladen Gogala
INET: [EMAIL PROTECTED]
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Re: sequences and cursors
Run your test case, and check the contents of v$open_cursor. Unless my memory has got it backwards, the pl/sql cursor cache is counted towards max_open_cursors, but the cursors that have been held open by the 'dirty tricks department' are closed as required if the limit is reached: (so should not be responsible for ORA-01000 anyway). cursors held open as session_cache'd cursors are counted independently of max_open_cursors - so should not cause an ORA-01000 Regards Jonathan Lewis http://www.jlcomp.demon.co.uk The educated person is not the person who can answer the questions, but the person who can question the answers -- T. Schick Jr One-day tutorials: http://www.jlcomp.demon.co.uk/tutorial.html Three-day seminar: see http://www.jlcomp.demon.co.uk/seminar.html UK___November The Co-operative Oracle Users' FAQ http://www.jlcomp.demon.co.uk/faq/ind_faq.html - Original Message - To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED] Sent: Thursday, December 11, 2003 2:09 PM It might be held in the cursor cache, it may even be held in session cursors cache but it will not be counted as an open cursor. My suggestion had diagnostic purpose only. The problem is, probably, with the tool which explicitly closes cursors too frequently and insufficiently sized shared pool which throws cursors out soon after they're closed. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Jonathan Lewis INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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).
sequences and cursors
hi here are the specs of my db: version 8.1.7 on windows,open_cursors=500 i am facing a certain issue. we have a few sessions running out of cursor(ora-1000) and i used 1000 event to dump trace on these sessions. i found a certain statement select seq.nextval from dual; being repeated more than 350 times of the available 500 cursors. the dev say nothing has changed nor has there been a increase in the load. can you please advise me whther this could be a issue or am i missing something here thanks sai -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Sai Selvaganesan INET: [EMAIL PROTECTED] Fat City Network Services-- 858-538-5051 http://www.fatcity.com San Diego, California-- Mailing list and web hosting services - 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: sequences and cursors
What tool are you using? HAve you considered putting select from the
sequence in an explicit cursor, open it, fetch it and close it again?
What Have in mind is something like this:
declare
cursor csr is
select sai.nextval from dual;
num integer :=0;
ind integer :=10;
begin
while (ind=0) loop
open csr;
fetch csr into num;
close csr;
dbms_output.put_line('Sai is:'||num);
ind:=ind-1;
end loop;
end;
/
Here is the output:
QL /
Sai is:13
Sai is:14
Sai is:15
Sai is:16
Sai is:17
Sai is:18
Sai is:19
Sai is:20
Sai is:21
Sai is:22
Sai is:23
PL/SQL procedure successfully completed.
On 12/09/2003 01:39:25 PM, Sai Selvaganesan wrote:
hi
here are the specs of my db:
version 8.1.7 on windows,open_cursors=500
i am facing a certain issue. we have a few sessions
running out of cursor(ora-1000) and i used 1000 event
to dump trace on these sessions. i found a certain
statement
select seq.nextval from dual;
being repeated more than 350 times of the available
500 cursors.
the dev say nothing has changed nor has there been a
increase in the load.
can you please advise me whther this could be a issue
or am i missing something here
thanks
sai
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Sai Selvaganesan
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
-
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).
Mladen Gogala
Oracle DBA
Note:
This message is for the named person's use only. It may contain confidential,
proprietary or legally privileged information. No confidentiality or privilege is
waived or lost by any mistransmission. If you receive this message in error, please
immediately delete it and all copies of it from your system, destroy any hard copies
of it and notify the sender. You must not, directly or indirectly, use, disclose,
distribute, print, or copy any part of this message if you are not the intended
recipient. Wang Trading LLC and any of its subsidiaries each reserve the right to
monitor all e-mail communications through its networks.
Any views expressed in this message are those of the individual sender, except where
the message states otherwise and the sender is authorized to state them to be the
views of any such entity.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Mladen Gogala
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051 http://www.fatcity.com
San Diego, California-- Mailing list and web hosting services
-
To REMOVE yourself from this mailing list, send an E-Mail message
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Re: sequences and cursors
thanks mladen.
will give this a shot...again thanks a bunch
sai
--- Mladen Gogala [EMAIL PROTECTED] wrote:
What tool are you using? HAve you considered putting
select from the
sequence in an explicit cursor, open it, fetch it
and close it again?
What Have in mind is something like this:
declare
cursor csr is
select sai.nextval from dual;
num integer :=0;
ind integer :=10;
begin
while (ind=0) loop
open csr;
fetch csr into num;
close csr;
dbms_output.put_line('Sai is:'||num);
ind:=ind-1;
end loop;
end;
/
Here is the output:
QL /
Sai is:13
Sai is:14
Sai is:15
Sai is:16
Sai is:17
Sai is:18
Sai is:19
Sai is:20
Sai is:21
Sai is:22
Sai is:23
PL/SQL procedure successfully completed.
On 12/09/2003 01:39:25 PM, Sai Selvaganesan wrote:
hi
here are the specs of my db:
version 8.1.7 on windows,open_cursors=500
i am facing a certain issue. we have a few
sessions
running out of cursor(ora-1000) and i used 1000
event
to dump trace on these sessions. i found a certain
statement
select seq.nextval from dual;
being repeated more than 350 times of the
available
500 cursors.
the dev say nothing has changed nor has there been
a
increase in the load.
can you please advise me whther this could be a
issue
or am i missing something here
thanks
sai
--
Please see the official ORACLE-L FAQ:
http://www.orafaq.net
--
Author: Sai Selvaganesan
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051
http://www.fatcity.com
San Diego, California-- Mailing list and
web hosting services
-
To REMOVE yourself from this mailing list, send an
E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of
'ListGuru') and in
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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).
Mladen Gogala
Oracle DBA
Note:
This message is for the named person's use only. It
may contain confidential, proprietary or legally
privileged information. No confidentiality or
privilege is waived or lost by any mistransmission.
If you receive this message in error, please
immediately delete it and all copies of it from your
system, destroy any hard copies of it and notify the
sender. You must not, directly or indirectly, use,
disclose, distribute, print, or copy any part of
this message if you are not the intended recipient.
Wang Trading LLC and any of its subsidiaries each
reserve the right to monitor all e-mail
communications through its networks.
Any views expressed in this message are those of the
individual sender, except where the message states
otherwise and the sender is authorized to state them
to be the views of any such entity.
--
Please see the official ORACLE-L FAQ:
http://www.orafaq.net
--
Author: Mladen Gogala
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051
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San Diego, California-- Mailing list and web
hosting services
-
To REMOVE yourself from this mailing list, send an
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from). You may
also send the HELP command for other information
(like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Sai Selvaganesan
INET: [EMAIL PROTECTED]
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Re: sequences and cursors
thanks mlade..i will surely give this a shot.
can you please tell me whether a sequence creates such
issues. as mentioned earlier, the developers claim
that no code has changed. im am not able to give any
kind of reason for this though the trace shows this
statement being called more than 350 times.
thanks
sai
--- Mladen Gogala [EMAIL PROTECTED] wrote:
What tool are you using? HAve you considered putting
select from the
sequence in an explicit cursor, open it, fetch it
and close it again?
What Have in mind is something like this:
declare
cursor csr is
select sai.nextval from dual;
num integer :=0;
ind integer :=10;
begin
while (ind=0) loop
open csr;
fetch csr into num;
close csr;
dbms_output.put_line('Sai is:'||num);
ind:=ind-1;
end loop;
end;
/
Here is the output:
QL /
Sai is:13
Sai is:14
Sai is:15
Sai is:16
Sai is:17
Sai is:18
Sai is:19
Sai is:20
Sai is:21
Sai is:22
Sai is:23
PL/SQL procedure successfully completed.
On 12/09/2003 01:39:25 PM, Sai Selvaganesan wrote:
hi
here are the specs of my db:
version 8.1.7 on windows,open_cursors=500
i am facing a certain issue. we have a few
sessions
running out of cursor(ora-1000) and i used 1000
event
to dump trace on these sessions. i found a certain
statement
select seq.nextval from dual;
being repeated more than 350 times of the
available
500 cursors.
the dev say nothing has changed nor has there been
a
increase in the load.
can you please advise me whther this could be a
issue
or am i missing something here
thanks
sai
--
Please see the official ORACLE-L FAQ:
http://www.orafaq.net
--
Author: Sai Selvaganesan
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051
http://www.fatcity.com
San Diego, California-- Mailing list and
web hosting services
-
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).
Mladen Gogala
Oracle DBA
Note:
This message is for the named person's use only. It
may contain confidential, proprietary or legally
privileged information. No confidentiality or
privilege is waived or lost by any mistransmission.
If you receive this message in error, please
immediately delete it and all copies of it from your
system, destroy any hard copies of it and notify the
sender. You must not, directly or indirectly, use,
disclose, distribute, print, or copy any part of
this message if you are not the intended recipient.
Wang Trading LLC and any of its subsidiaries each
reserve the right to monitor all e-mail
communications through its networks.
Any views expressed in this message are those of the
individual sender, except where the message states
otherwise and the sender is authorized to state them
to be the views of any such entity.
--
Please see the official ORACLE-L FAQ:
http://www.orafaq.net
--
Author: Mladen Gogala
INET: [EMAIL PROTECTED]
Fat City Network Services-- 858-538-5051
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San Diego, California-- Mailing list and web
hosting services
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To REMOVE yourself from this mailing list, send an
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from). You may
also send the HELP command for other information
(like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Sai Selvaganesan
INET: [EMAIL PROTECTED]
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