How to create a datablock at run time?

I want to create a datablock with database item at runtime.
Is it possible?
plz help.

user8200267 wrote:
actually i have to show my records in multiple blocks. I arranged it in 6 blocks in a form, but user says
it is possible we need more blocks to show now form is getting heavy. so i want new blocks will be created
as and when required.You cannot create blocks on the fly. You should strongly push for new forms rather than keep adding functionality to the same form. Design at that level should be your call not the user.

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Hi Ravi,
Thanks for your reply!
I have just discovered something very interesting! best explained by example:
(I might log an SR through metalink too. I'll be sure to update this thread with the outcome...)
I create 3 schedules and 3 simple jobs:
schedule 1 - start_date in 2 minutes time (eg. 11:30:00), repeat_interval => null
schedule 2 - start_date in 2 minutes, 20 seconds time (eg. 11:30:20), repeat_interval => 'FREQ=DAILY'
schedule 3 - start_date in 2 minutes, 40 seconds time (eg. 11:30:40), repeat_interval => null
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1. The first time these schedules are created only schedule 2 runs. Schedules 1 and 3 never run.
2. I drop and re-create all schedules and jobs, (adjusting the time to a few minutes in the future) and re-submit the schedules and jobs and they all run. I can continue this as many times as I like now and the repeat_interval of null will now work fine.
3. re-start the 10gR2 database.
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My script is below:
declare
start_datetime__w timestamp(3) with time zone;
repeat_interval__w varchar2(200);
begin
* REPEAT INTERVAL NULL TEST
* TIM_SCHED_2_1 - no repeat interval
* TIM_SCHED_2_2 - a repeat interval
* TIM_SCHED_2_3 - no repeat interval (identical to TIM_SCHED_2_1)
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* job 2 will always run
* jobs 1 and 3 will only run after the successful run of job2 AND jobs 1 and 3 have been re-created
* Why?
* It seems the scheduler needs a wakeup call!!!
* test table: create table tim (col1 varchar2(30), col2 date);
-- Cleanup previous jobs:
--dbms_scheduler.drop_job      (job_name      => 'TIM_JOB_2_1');
--dbms_scheduler.drop_schedule (schedule_name => 'TIM_SCHED_2_1');
--dbms_scheduler.drop_job      (job_name      => 'TIM_JOB_2_2');
--dbms_scheduler.drop_schedule (schedule_name => 'TIM_SCHED_2_2');
--dbms_scheduler.drop_job      (job_name      => 'TIM_JOB_2_3');
--dbms_scheduler.drop_schedule (schedule_name => 'TIM_SCHED_2_3');
repeat_interval__w := 'FREQ=DAILY';
-- create schedule TIM_SCHED_2_1, repeat_interval__w = null
start_datetime__w := '27-FEB-2007 11:34:00.000 AM +10:00';
dbms_scheduler.create_schedule (schedule_name => 'TIM_SCHED_2_1',
start_date => start_datetime__w,
repeat_interval => null,
end_date => null,
comments => 'schedule created at '||to_char(sysdate,'DD-MON-YYYY HH24:MI:SS'));
-- create schedule TIM_SCHED_2_2, with a repeat_interval set
start_datetime__w := '27-FEB-2007 11:34:20.000 AM +10:00';
dbms_scheduler.create_schedule (schedule_name => 'TIM_SCHED_2_2',
start_date => start_datetime__w,
repeat_interval => repeat_interval__w,
end_date => null,
comments => 'schedule created at '||to_char(sysdate,'DD-MON-YYYY HH24:MI:SS'));
-- create schedule TIM_SCHED_2_3, repeat_interval__w = null (SCHEDULE IDENTICAL TO TIM_SCHED_2_1)
start_datetime__w := '27-FEB-2007 11:34:40.000 AM +10:00';
dbms_scheduler.create_schedule (schedule_name => 'TIM_SCHED_2_3',
start_date => start_datetime__w,
repeat_interval => null,
end_date => null,
comments => 'schedule created at '||to_char(sysdate,'DD-MON-YYYY HH24:MI:SS'));
-- create jobs
dbms_scheduler.create_job (job_name => 'TIM_JOB_2_1',
schedule_name => 'TIM_SCHED_2_1',
job_type => 'PLSQL_BLOCK',
job_action => 'begin '||
'insert into tim values (''TIM_JOB_2_1'', sysdate); '||
'commit; '||
'end;',
number_of_arguments => 0,
enabled => TRUE,
comments => 'job created at '||to_char(sysdate,'DD-MON-YY HH24:MI:SS'));
dbms_scheduler.create_job (job_name => 'TIM_JOB_2_2',
schedule_name => 'TIM_SCHED_2_2',
job_type => 'PLSQL_BLOCK',
job_action => 'begin '||
'insert into tim values (''TIM_JOB_2_2'', sysdate); '||
'commit; '||
'end;',
number_of_arguments => 0,
enabled => TRUE,
comments => 'job created at '||to_char(sysdate,'DD-MON-YY HH24:MI:SS'));
dbms_scheduler.create_job (job_name => 'TIM_JOB_2_3',
schedule_name => 'TIM_SCHED_2_3',
job_type => 'PLSQL_BLOCK',
job_action => 'begin '||
'insert into tim values (''TIM_JOB_2_3'', sysdate); '||
'commit; '||
'end;',
number_of_arguments => 0,
enabled => TRUE,
comments => 'job created at '||to_char(sysdate,'DD-MON-YY HH24:MI:SS'));
end;
Cheers,
Tim.

How to dynamically validate users at run time using connection pools ?

Hi Folks
We are facing a peculiar situation . We have established connection to our
oracle 8i database using Oracle Thin driver using conenction pooling at the weblogic
server . We set up connection pools at the console to set up connections to thge
oracle 8i database. However the user name and password is always static when
we create the connection pool at the console .
How do i dynamically validate other users using the same connection pool ??
Eg - The connection pool at design time in the console uses user A and password
- passA . Now at run time lets say I prompt the user for a login screen and want
to trap the user id and apssword parameters entered by the user and use it with
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Properties props = new Properties();
props.put("connectionPoolID", "Oracle_Thin_Driver_Pool");
props.put("user" , userId );
props.put("password",userPass);
myDriver = (Driver) Class.forName("weblogic.jdbc.pool.Driver").newInstance();
conn = myDriver.connect("jdbc:weblogic:pool", props);
But always it connects to the database using the userid and password set in the
console while creating the connection pool . So how i get the connection pool
to validate my current userid and password entered through the login screen ??
Thanks in advance
Keith

Hey Bob.
So I assume you're -completely- working with built executables? You're not going to work in the editor environment to modify your projects at all?
If this is the case, then having a generic deployment phase at the beginning of the executable (with a "setting up hardware for your app" splash screen) isn't a bad idea -
Check the binary on the target, ensure it matches the binary you have on the host machine (in case you ever decide to update).
If they don't match, FTP the new file down to replace the old one.
FTP the ni-rt.ini file, ensure the startup exe is enabled and is pointing to the correct location.
If it's not enabled or not pointing to the correct startup file, modify the .INI file and FTP back to the target.
If you had to update the INI file, ask target to reboot itself. Wait 30 seconds, and wait for target to become available again.
Connect to the target. If you cannot connect, reboot target. If the target comes back and you still cannot connect to the app, notify user.
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How to clear this type of run time error

good eve,
i am migrating sql server procedures to oracle procedures
i am trying to execute char(39) function in plsql is the following way correct and if this way is correct i am getting
run time error like
create or replace
procedure Sel_subgroup(key in varchar2,gradename in varchar2)
as
gid res_grades.grade_id%type;
gn res_grades.gradename_en%type;
stid sub_topics.subtopic_id%type;
stn sub_topics.subtopicname_en%type;
cc res_grades.countrycode%type;
estid exsub_topics.exsub_topics_id%type;
estn exsub_topics.exsubtopicname_en%type;
d_stmt varchar2(500);
type ref_cursor is ref cursor;
rc ref_cursor;
begin
d_stmt :='SELECT RG.Grade_ID,RG.Gradename_'||key||',ST.SubTopic_ID,ST.SubTopicname_'||key||', RG.CountryCode,
Est.ExSub_Topics_ID, Est.ExSubTopicname_'||key||' from
Res_Grades RG INNER JOIN Sub_Topics ST ON RG.Grade_Id= ST.Grade_ID
INNER JOIN ExSub_Topics Est ON ST.SubTopic_ID = Est.Sub_Topics_Id
Where Gradename_'||key||' = '''||gradename||'''';
open rc for d_stmt;
loop
fetch rc into gid,gn,stid,stn,cc,estid,estn;
if rc%found then
dbms_output.put_line(gid||gn||stid||stn||cc||estid||estn);
else
exit;
end if;
end loop;
close rc;
commit;
end Sel_subgroup;the out screen result is:
Connecting to the database rasool.
Process exited.
Disconnecting from the database rasool.can u please help me,
thanking you,
prakash

to samb,
It doesn't look like you are getting a runtime error. Is it possible your query is returning no rows?
If you are sure your query should be returning rows, you probably need to check if DBMS_OUTPUT is enabled in SQL Developer (View menu I think).my query is returning a row
where where 123=key and 'FUBAR'=gradename?
If so, you want 3 single-quotes at the end of the string, not 4:
You sure? I think 4 is correct.i am sure 4 is correct i have tried as per jeenesh said
to jeenesh
SQL> ed
Wrote file afiedt.buf
1 create or replace
2 procedure Sel_subgroup(key in varchar2,gradename in varchar2)
3 as
4 d_stmt varchar2(500);
5 begin
6 d_stmt :='SELECT RG.Grade_ID,RG.Gradename_'||key||',ST.SubTopic_ID,ST.SubTopicname_'||key||', RG.CountryCode,
7 Est.ExSub_Topics_ID, Est.ExSubTopicname_'||key||' from
8 Res_Grades RG INNER JOIN Sub_Topics ST ON RG.Grade_Id= ST.Grade_ID
9 INNER JOIN ExSub_Topics Est ON ST.SubTopic_ID = Est.Sub_Topics_Id
10 Where Gradename_'||key||' = '''||gradename||'''';
11 dbms_output.put_line(d_stmt);
12* end Sel_subgroup;
SQL> /
Procedure created.
SQL> set serverout on
SQL> exec Sel_subgroup('1','TEST');
SELECT RG.Grade_ID,RG.Gradename_1,ST.SubTopic_ID,ST.SubTopicname_1,
RG.CountryCode,
Est.ExSub_Topics_ID, Est.ExSubTopicname_1 from
Res_Grades RG
INNER JOIN Sub_Topics ST ON RG.Grade_Id= ST.Grade_ID
INNER JOIN ExSub_Topics
Est ON ST.SubTopic_ID = Est.Sub_Topics_Id
Where Gradename_1 = 'TEST'
PL/SQL procedure successfully completed.i have also executed your code sir it is executing.in my coding,i found that the part of dbms_output.put_line in my ref cursor loop is not displaying me the print.
to karthick arp
Did enable serveroutput?yes i have enabled it with buffer size 200000
to
Billy Verreynne & Frank Kulash
as per you said sir i have done and got an error my code as follows
SQL> var rc refcursor
SQL> var key varchar2(2)
SQL> var gradename varchar2(30)
SQL> exec :key :='EN';
PL/SQL procedure successfully completed.
SQL> exec :gradename :='PRE-K';
PL/SQL procedure successfully completed.
SQL> begin sel_subgroup(key => :key, gradename => :gradename,rc => :rc); end;
2 /
PL/SQL procedure successfully completed.
SQL> print rc
ERROR:
ORA-24338: statement handle not executed
SP2-0625: Error printing variable "rc"how to handle this error sir

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Hi,
I am trying to invoke classes at run-time.
I am using Class.forName("className") for that where the "className" is also obtained at run-time .
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thanks in advance-
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Hi,
Thanks all for the valuable inputs.
I have created a hashtable of primitive data types in the form of "int" as key and "Integer.TYPE" as the object in that element of the hashtable.
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How to choose RT System at Run Time

Variations of this question have been asked, but I'm not sure if they've been answered.
We use LabVIEW RT to do a variety of behavior tests. We have multiple experimenters using the same hardware, and each has his/her own set of "What I want to do" requirements.
Originally, we used LabVIEW 7.0 (i.e. Before Project) to develop a Host and Remote (PXI) application. The Host application was built as an .EXE, while the Remote was saved as an .LLB, copied to the PXI, and "invoked" at Run Time by calls to VI Server. Note that this means that the code on the Remote might (is?) not be as compact, efficient, or optimized as if we had built an .EXE. But we definitely can have Bob's Experiment, Jane's Experiment, and Joe's Experiment on the PC (as separate executables), and each could respectively call Bob's RT, Jane's RT, or Joe's RT on the PXI at run time. No need to have LabVIEW (or LabVIEW expertise) on this system, and Bob, Jane, and Joe can be "ordinary users".
"Modern LabVIEW" takes a slightly different (and probably better) view towards Real-Time -- both the Host and Remote programs are built as Executables (the RT is built as an .RTEXE). We can "pre-deploy" the RT code to the PXI, and set it to run at Startup. This makes getting the RT side "running" semi-automatic -- all you need to do (if it isn't running) is reboot the PXI.
But what if you want Bob, Jane, and Joe's version, selectable by running (on the Host) Bob, Jane, or Joe's Host application?
I'm playing with the following algorithm, which seems to work. I'm presenting it here to get feedback, especially if there is a "better way" to do this.
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Consider three Projects, Project Bob, Project Jane, and Project Joe. Within each Project, a Host executable is built having a name like "UI Bob" (or "Jane" or "Joe"), while the Target executable is given the name "RT Bob" (or "Jane" or "Joe"). The three .RTEXE files are copied to the Target and placed in the Startup folder, C:\ni-rt\startup.
Now run one of the Host executables. It does the following:
FTP a copy of C:\ni-rt.ini from the Target to itself.
Get the name of the Startup .RTEXE.
If it is the "appropriate" name (i.e. if the Host program is UI Bob.exe, the Remote should be RT Bob.rtexe), do nothing, as the Target is already running the right code.
Otherwise, we need to force the Target to run the correct Target code. We can do this by changing the Startup entry in the .INI file to the Remote code we need (for example, RT Bob.rtexe), then tell the Remote to Reboot. When it comes back, it will be running the appropriate RT code.
The Host now goes ahead and tries to connect to the Remote. If a connection cannot be established (for example, the Remote code might have stopped), a Reboot of the Remote might fix things up.
Short of trying to write a single enormous program that encompasses every experimental scenario and situation (i.e. have a big Case Statement with a Bob, Jane, or Joe "choice", and a single executable that had everyone's code in it), this seemed to be a fairly simple way to have the robustness of compiled executables on both the Host and Remote machines, yet maintain the flexibility to let the (non-LabVIEW-guru) User choose which executable to run.
I haven't fully deployed this system -- I'm currently at "Proof-of-Concept" stage, but I've got the various "pieces" working. Does this seem like a sensible appropach? Are there other, simpler, ways to accomplish this?
Bob Schor

Hey Bob.
So I assume you're -completely- working with built executables? You're not going to work in the editor environment to modify your projects at all?
If this is the case, then having a generic deployment phase at the beginning of the executable (with a "setting up hardware for your app" splash screen) isn't a bad idea -
Check the binary on the target, ensure it matches the binary you have on the host machine (in case you ever decide to update).
If they don't match, FTP the new file down to replace the old one.
FTP the ni-rt.ini file, ensure the startup exe is enabled and is pointing to the correct location.
If it's not enabled or not pointing to the correct startup file, modify the .INI file and FTP back to the target.
If you had to update the INI file, ask target to reboot itself. Wait 30 seconds, and wait for target to become available again.
Connect to the target. If you cannot connect, reboot target. If the target comes back and you still cannot connect to the app, notify user.
That's almost exactly how we handle installation and deployment via MAX.
The big assumption here is that the built executables were all built with the same version of LabVIEW Real-Time. If not, you'd need a system replication step in there to make sure the proper version of LabVIEW is on the target before launching the built .rtexe.
-Danny

How to create a datablock at run time?

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