Ref T validity after fork ???

Hi,
Currently I am empirically trying to establish what the validity of a Ref to an object would be set in a parent, after a fork call in Unix but am not comfortable with this way of engineering :-) Can anyone please cast some light on what can and what cannot be asserted on Ref's after a fork call. My assessment is that the memory in the cache occupied by a pinned Ref will have the copy on write flag set and as such, if the parent tinkers with it, the child will get its own copy. If my assumption is correct that one cannoty safely maintain using an Oracle connection after forking and that Ref's are valid only within the context of a connection and that a child opens its own connection to Oralce (shared server instance) then I am lead to believe that the Ref will become unsafe to use especially if it was not pinned but attempted to be pinned in the child. If it was pinned before forking, read-only access should be fine (due to copy on write pages) but modifying it is not safe as the connection it lives in is not valid in the child. Can someone verify whether my assessment is correct ?
PS. we cannot write a multi-threaded application for various other reasons and we have to fork

Hi,
That crash looks like one where Safari has been modified by Safari Enhancer. This changes some internals of Safari resulting in the 10.4.11 updater not working to plan.
Download the 10.4.11 combo updater (from the Downloads link at the top of this page) and then download [Pacifist|www.charlessoft.com] to extract the Safari package from the updater. Use this to replace your broken Safari.app package.
Hope that works!

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hi everyone,
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select min(empid),max(empid) into :p_minval, :p_maxval from emp where empid in (:p_emp);
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function afterPform return boolean is
type rc is ref cursor;
l_rc rc;
sqlstmt varchar2(512);
begin
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thanks & regards
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Problems after fork

Hello specialists,
I hope this is the right forum to get some help on a very dubious problem.
We created a very little C-library to use Unix-Calls in our JAVA-application. What we wanted to use especially is fork!
Now there is the following problem:
If the Java-application is "complicated enough" - whatever this is - then one or both processes (in most cases the childprocess) crash on one of the next few JAVA-lines of code after fork comes back.
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I can try to post the C-code if this would help, because its not really very much.
I hope you can give me hints, because I got stuck after hundreds and hundreds of experiments.
Thanks in advance and
greetings from
Holger

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ORA-01139: RESETLOGS option only valid after an incomplete database recover

Hello All,
Can anyone please tell me what could be a reason of this error.
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
SQL> ALTER DATABASE OPEN RESETLOGS;
ALTER DATABASE OPEN RESETLOGS
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
Regards
Vinay

Hello Aman,
Sorry couldn't give all information in frustration.
Oracle version is 9.2.0.1.0 running on Red Hat 4
Actually i did TPITR and have to open database with resetlogoption recovery was successful but while opening received this error.
Database dismounted.
ORACLE instance shut down.
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ORACLE instance started.
Total System Global Area 798040164 bytes
Fixed Size 454756 bytes
Variable Size 478150656 bytes
Database Buffers 318767104 bytes
Redo Buffers 667648 bytes
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ORA-00283: recovery session canceled due to errors
ORA-00264: no recovery required
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Database altered.
SQL> ed
Wrote file afiedt.buf
1* alter database datafile 12 online
SQL> /
Database altered.
SQL> ed
Wrote file afiedt.buf
1* alter database datafile 13 online
SQL> /
Database altered.
SQL> RECOVER AUTOMATIC DATABASE UNTIL CHANGE 3997955 USING BACKUP CONTROLFILE;
Media recovery complete.
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
SQL> alter database open resetlogs;
alter database open resetlogs
ERROR at line 1:
ORA-01139: RESETLOGS option only valid after an incomplete database recovery
SQL> ALTER DATABASE OPEN RESETLOGS;
ALTER DATABASE OPEN RESETLOGS
ERROR at line 1:
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Prevent Duplicate Entries through Validation after submit apex 4.1

Hi There
I'm having issues with the following, i'm creating a validation after submit, if the column FFILE already has the same data then do no insert the submission. I've also thought doing a constraint for the column with a check key, but not sure how to write constraint expression in pl/sql as text.
so for the validation creation i have
SQL
type: Exists
Validation Expression
select 1 from PLDB2 where FFILE = :P2_FFILE
FFILE is the column, P2_File is the number field on a form page for users to submit along with other data.
If i want to check more than one column with the entries, how would i write the expression?
Thank you kindly,
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(     "ID" NUMBER,
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BEFORE
insert or update on "PLDB2"
for each row
declare
v_number_of_days number;
begin
IF :NEW.END_DATE IS NULL THEN
v_number_of_days :=NULL;
ELSE
v_number_of_days := to_date(:NEW.START_DATE,'DD/MM/YYYY') - to_date(:NEW.END_DATE,'DD/MM/YYYY');
END IF;
:NEW.NUMBER_OF_DAYS := v_number_of_days;
end;
ALTER TRIGGER "PLDB2_T1" ENABLE;
CREATE OR REPLACE TRIGGER "bi_PLDB2"
before insert on "PLDB2"
for each row
begin
if :new."ID" is null then
select "PLDB2_SEQ".nextval into :new."ID" from dual;
end if;
end;
ALTER TRIGGER "bi_PLDB2" ENABLE;

Hi,
I'm having issues with the following, i'm creating a validation after submit, if the column FFILE already has the same data then do no insert the submission. I've also thought doing a constraint for the column with a check key, but not sure how to write constraint expression in pl/sql as text.so for the validation creation i have
SQL
type: Exists
Validation Expression
select 1 from PLDB2 where FFILE = :P2_FFILE
FFILE is the column, P2_File is the number field on a form page for users to submit along with other data.
If i want to check more than one column with the entries, how would i write the expression?>
select 1 from PLDB2 where FFILE IN (:P2_FFILE,:P2_FFILE_1,...,:P2_FFILE_n)Is that what you are looking for?
Cheers,

How to do data validation after each load

Hi all,
How to do data validation after each load.
please send to : [email protected]
bhaskar

Hi Bhaskar,
Check these posts:
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Hi,
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IS
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CREATE OR REPLACE PACKAGE BODY test1_pck
IS
TYPE t_rec IS RECORD(col dual.dummy%TYPE);
TYPE t_cur IS REF CURSOR RETURN t_rec;
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v_sql VARCHAR2(255) := 'BEGIN OPEN :1 FOR SELECT dummy FROM dual; END;';
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v_sql VARCHAR2(255) := 'BEGIN OPEN :1 FOR SELECT dummy FROM dual; END;';
v_cur t_cur;
v_rec t_rec;
BEGIN
EXECUTE IMMEDIATE v_sql USING v_cur;
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PROCEDURE run1
IS
v_cur t_cur;
v_rec t_rec;
BEGIN
foo1(v_cur);
LOOP
FETCH v_cur INTO v_rec;
EXIT WHEN v_cur%NOTFOUND;
CASE v_rec.col
WHEN 'X' THEN dbms_output.put_line('success');
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END LOOP;
END run1;
PROCEDURE run2
IS
BEGIN
foo2;
END run2;
END test1_pck;
Thanks for any hints.
Regards Frank

Hi Max,
the referenced thread discusses a .Net problem. A lot of layers are involved their. My problem is a very basic problem. You get this error even if you run the test in a sql session on the server.
It would be a great help for me
a) if someone could test this package on a 11.1.0.7 database
b) if someone could test this package on a 11.2 database (is it fixed in Release2?)
c) if someone could give me hints how I could modify the procedure to make it usable for 11.1.0.7
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Frank

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Hi,
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1. Never EVER migrate pro apps.
2. see #1.
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I am aware that it is not safe to make particular function calls between a fork
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Does anyone have suggestions on how to further troubleshoot or resolve this issue?
I am using Hyper-V Server 2012 R2 on both nodes and they are joined to the same domain.

Hi,
I don’t found the similar issue, please your storage compatible with server 2012R2, Update Network Card Drivers and firmware on both the Nodes, temporarily disable your AV
soft and firewall install the Recommended hotfixes and updates for Windows Server 2012 R2-based failover clusters update.
The Recommended hotfixes and updates for Windows Server 2012 R2-based failover clusters
http://support.microsoft.com/kb/2920151/en-us
Hope this helps.
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Ref T validity after fork ???

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