Delay in execution of statements within a procedure!

Dear All,
My Database is Oracle 11gR2 on Linux.
I have to schedule delete in 5 tables. For this i will write a procedure with delete queries and schedule the procedure to run daily in night.
I want to give delay in the execution of delete queries within procedure? How can i add this functionality within a procedure?
I don't want to lock the tables as other queries may be accessing the same table meanwhile.
Looking for your help.
Regards,
Imran

Other queries accessing the table meanwhile is a perfectly normal reason to lock the tables, as writers don't block readers.
Implementing 'delays' is definitely an amateurish hack to result into more problems.
Locking and transactions are one of the core functions of any RDBMS, and it is better to understand them, than to implement hack on hack on hack to turn a Ferrari like Oracle in a broken bike with a flat tire.
After several years of asking doc questions you should know better.
BTW can you explain why you end all of your questions with an unnecessary exclamation mark?
If you can't explain this, can you stop doing so?
There is no reason to yell here.
Thank you
Sybrand Bakker
Senior Oracle DBA

Similar Messages

Syntax for delete statement within a procedure

within a procedure i tried to delete the table using
delete table tablename;
but it is showing error that
PL/SQL: SQL Statement ignored
PL/SQL: ORA-00903: invalid table name
whether we have to use execute immediate delete table tablename;
or this syntax is correct

Hi ,
i think if you want to use the delete
then it shld be delete from tablename --> this'll delete all rows
but if u want to use execute immediate then you might as well use TRUNCATE --> provided you need not have these data written to the log file (if you need for recovery later better use DELETE)
i.e EXECUTE IMMEDIATE ('TRUNCATE TABLE tbl_name');
hope this helps

Sp_executesql vs transaction statement within Stored Procedure

Experts,
Any difference between sp_executesql vs Transaction/Commit statement or try/catch block within Stored Procedure?
What is the best practice to use and why?
Thank You
Regards,
Kumar
Please do let us know your feedback. Thank You - KG, MCTS

Your question is a bit strange. sp_executesql is used for dynamic SQL. Unless the problem demands dynamic SQL and, therefore, sp_executesql, there is no need to use it.
For a single statement I would not use transaction and try/catch. For multiple statements you do need to use transaction. It's up to you if you want to use try/catch in the SP or not and trap the error in the client application.
For every expert, there is an equal and opposite expert. - Becker's Law
My blog
My TechNet articles

Delete records from multiple tables and add delay in execution

Dear All,
My Database is Oracle 11gR2 on Linux.
I have to schedule delete in 5 tables. For this i will write a procedure with delete queries and schedule the procedure to run daily in night.
I want to give delay in the execution of delete queries within procedure? How can i add this functionality within a procedure?
I don't want to lock the tables as other queries may be accessing the same table meanwhile.
Looking for your help.
Regards,
Imran

Duplicate thread - see https://forums.oracle.com/thread/2553380 for answer.

PL/SQL: Executing a procedure from within another procedure

Hello, I'm a newbie and I need help on how to execute procedures from within another procedure. The procedure that I call from within the procedure have return values that I want to check.
I tried: EXECUTE(user_get_forum_info(p_forumid, var_forum_exists, var_forum_access, var_forumname));
but I get the error message:
PLS-00103: Encountered the symbol "USER_GET_FORUM_INFO" when expecting one of the following::= . ( @ % ; immediate
The symbol ":=" was substituted for "USER_GET_FORUM_INFO" to continue.
And when I tried: EXECUTE(user_get_forum_info(p_forumid, var_forum_exists, var_forum_access, var_forumname));
I get the error message:
PLS-00222: no function with name 'USER_GET_FORUM_INFO' exists in this scope
PL/SQL: Statement ignored
The procedure USER_GET_FORUM_INFO exists. (don't understand why it says "no FUNCTION with name", it's a procedure I'm executing)
I'm stuck so thanks for any help...
Below is all the code. I'm using Oracle 9i on RedHat Linux 7.3.
================================================================================
CREATE OR REPLACE PROCEDURE user_forum_requestsaccess (
p_forumid IN NUMBER,
p_requestmessage IN VARCHAR2
AS
var_forumid NUMBER;
var_forum_exists NUMBER;
var_forum_access NUMBER;
request_exists NUMBER;
var_forumname VARCHAR2(30);
FORUM_DOESNT_EXIST EXCEPTION;
FORUM_USER_HAS_ACCESS EXCEPTION;
FORUM_REQUEST_EXIST EXCEPTION;
BEGIN
SELECT SIGN(NVL((SELECT request_id FROM forum.vw_all_forum_requests WHERE forum_id = p_forumid AND db_user = user),0)) INTO request_exists FROM DUAL;
EXECUTE(user_get_forum_info(p_forumid, var_forum_exists, var_forum_access, var_forumname));
IF var_forum_exists = 0 THEN
RAISE FORUM_DOESNT_EXIST;
ELSIF var_forum_access = 1 THEN
RAISE FORUM_USER_HAS_ACCESS;
ELSIF request_exists = 1 THEN
RAISE FORUM_REQUEST_EXIST;
ELSE
INSERT INTO tbl_forum_requests VALUES (SEQ_TBL_FORUM_REQ_REQ_ID.NEXTVAL, SYSDATE, p_requestmessage, p_forumid, user);
INSERT INTO tbl_forum_eventlog VALUES (SEQ_TBL_FORUM_EVNTLOG_EVNT_ID.NEXTVAL,SYSDATE,1,'User ' || user || ' requested access to forum ' || var_forumname || '.', p_forumid,user);
COMMIT;
END IF;
EXCEPTION
WHEN
FORUM_DOESNT_EXIST
THEN RAISE_APPLICATION_ERROR(-20003,'Forum doesnt exist.');
WHEN
FORUM_USER_HAS_ACCESS
THEN RAISE_APPLICATION_ERROR(-20004,'User already have access to this forum.');
WHEN
FORUM_REQUEST_EXIST
THEN RAISE_APPLICATION_ERROR(-20005,'A request to this forum already exist.');
END;
GRANT EXECUTE ON user_forum_requestsaccess TO forum_user;
================================================================================
Regards Goran

you don't have to use execute when you want to execute a procedure (only on sql*plus, you would use it)
just give the name of the funtion
create or replace procedure test
as
begin
    dbms_output.put_line('this is the procedure test');
end test;
create or replace procedure call_test
as
begin
    dbms_output.put_line('this is the procedure call_test going to execute the procedure test');
    test;
end call_test;
begin
    dbms_output.put_line('this is an anonymous block calling the procedure call_test');
    call_test;
end;
/

How to call fn form within a procedure? - pl help

Hello
I have a procedure which has a set of statements that is called repeatedly.i would like to put them inside a function, passing an IN parameter as well. How to do that? and how do u call the fn from within the procedure?
Pl help.
rgds

SQL> create or replace package calls is
2      procedure proc ;
3 end ;
4 /
Package created.
SQL> create or replace package body calls is
2      function func(p_param in number) return number is
3      begin
4          dbms_output.put_line('param is:'||p_param) ;
5          return(p_param * 2) ;
6      end ;
7      procedure proc is
8          ret_val number ;
9      begin
10          ret_val := func(100) ;
11          dbms_output.put_line('ret_val='||ret_val) ;
12      end ;
13 end ;
14 /
Package body created.
SQL> exec calls.proc ;
param is:100
ret_val=200
PL/SQL procedure successfully completed.
SQL>Message was edited by:
Kamal Kishore

SAP HANA - How to run alter table statement in HANA procedure?

I am trying to run alter table statement in a procedure. HANA gives error saying
SAP DBTech JDBC: [257] (at 1338): sql syntax error: ALTER TABLE is not allowed in SQLScript: line 36 col 8 (at pos 1338)
How to run alter table statements in procedure?
Thanks,
Suren.

Hi Rich Heilman,
Thanks for your response. I have tried with dynamic SQL. I am trying to add partitions to a non portioned table.
EXECUTE IMMEDIATE 'ALTER TABLE ' || :SCHEMA_NAME || '.TARGET_TABLE PARTITION BY RANGE (TARGET_TYPE_ID) (PARTITION VALUE = 1, PARTITION VALUE = 2, PARTITION VALUE = 3, PARTITION VALUE = 4, PARTITION OTHERS)';
Execution fails with error
Could not execute 'CALL PARTITION_TARGET_TABLE('SUREN_TEST')' in 1.160 seconds .
[129]: transaction rolled back by an internal error: [129] "SUREN_TEST"."PARTITION_TARGET_TABLE": line 53 col 3 (at pos 2173): [129] (range 3)
Any reasons for this error?
Thanks,
Suren.

If statement within a view is not working correctly ?

Hi all,
maybe i am wrong but i think the if statement within a view is not working correctly. See code down below.
I would like to use the Hallo World depending on the page attribute isFrame with or without all the neccessary html tags. Therefore i have embedded the htmlb tags in an if statement. But for any reason if isframe is initial it isn't working. It would be great if anybody could help me.
<%@page language="abap"%>
<%@extension name="htmlb" prefix="htmlb"%>
<% if not isframe is initial. %>
<htmlb:content design="design2003">
     <htmlb:page title = "Top Level Navigation view">
<% endif. %>
hallo world
<% if not isframe is initial. %>
     </htmlb:page>
</htmlb:content>
<% endif. %>
thanks in advance and best regards
Matthias Hlubek

Matthias,
The short answer: your example is <b>NOT</b> going to work. The long answer will probably 5 pages to describe. So first let me rewrite the example so that it could work, and then give a short version of the long answer. Do not be disappointed if it is not totally clear. It is rather complicated. (See the nice form of IF statements that are possible since 620.)
<%@page language="abap"%>
<%@extension name="htmlb" prefix="htmlb"%>
<% if isframe is <b>NOT</b> initial. %>
<htmlb:content design="design2003">
<htmlb:page title = "Top Level Navigation view">
    hallo world
</htmlb:page>
</htmlb:content>
<% else. %>
hallo world
<% endif. %>
So why does your example not work? Let us start with a simple tag:
<htmlb:page title = "Top Level Navigation view">
</htmlb:page>
Now, for each tag, we have effectively the opening part (<htmlb:page>), an optional body, and then the closing part (</htmlb:page>). We are now at the level of the BSP runtime processing one tag. What the runtime does not know, is whether the tag wants to process its body or not. Each tag can decide dynamically at runtime whether the body should be processed. So the BSP compiler generates the following code:
DATA: tag TYPE REF TO cl_htmlb_page.
CREATE OBJECT tag.
tag->title = 'Top Level Navigation view'.
IF tag->DO_AT_BEGINNING( ) = CONTINUE.
ENDIF.
tag->DO_AT_END( ).
You should actually just debug your BSP code at ABAP level, and then you will immediately see all of this. Now, let us mix in your example with our code generation. First you simplified example:
<% if isframe is NOT initial. %>
<htmlb:page title = "Top Level Navigation view">
<% endif. %>
<% if isframe is NOT initial. %>
</htmlb:page>
<% endif. %>
And then with our generated code. Look specifically at how the IF/ENDIF blocks suddenly match!
if isframe is NOT initial.
DATA: tag TYPE REF TO cl_htmlb_page.
CREATE OBJECT tag.
tag->title = 'Top Level Navigation view'.
IF tag->DO_AT_BEGINNING( ) = CONTINUE.
endif.
if isframe is NOT initial.
ENDIF.
tag->DO_AT_END( ).
endif.
You can see that your ENDIF statements are closing IF blocks generated by the BSP compiler. Such a nesting will not work. This is a very short form of the problem, there are a number of variations, and different types of the same problem.
The only way to solve this problem, is probably to put the body into a page fragment and include it like I did above with the duplicate HelloWorld strings. But this duplicates source code. Better is to put body onto a view, that can be processed as required.
brian

Dynamic SQL statement in a Procedure

Hi,
is it possible to use a variable in place of a column name in a sql statement inside a procedure. Or to create the whole statement as a sql statement and execute it (preferrably with parameters - rather than concatinating the values).
Thanks for any help or direction
Elliot

Turns out you can do the following very nicely (dynamic sql with parameterized values)
Declare
id number(10,0);
sql_stmt varchar2(300);
fieldName varchar2(30);
fieldValue varchar2(100);
id := 30;
fieldName := 'somecolumn';
fieldValue := 'some value';
sql_stmt := 'UPDATE myTable SET ' || fieldName || ' = :1 WHERE id = :2';
EXECUTE IMMEDIATE sql_stmt USING fieldValue, id;

Using a different default component state within each page state

I am using a custom component in multiple page states but would like to have a different default state (for the same custom component) within each page state.
Is there anyway to use a different default component state within each page state .
When I change the default state at a component level it seems to go across all my page states. Any solutions?
Thank you

I guess I can just add that interaction for that component!
I think my brain is just catching up

Possible to have if statement within filters code?

Hi
I have some filters set up, and have assigned some global vars to them, which I then use in my Filters code to display the filters:
myText:Filters [globals.data.glow1, globals.data.stroke1, globals.data.shad1]
Works perfectly.
Now I want to assign a global var to each global filter var to determine if it should be shown or not. So...
globals.data.glow1On = true;
globals.data.stroke1On = true;
globals.data.shadOn = true;
... and then somehow incorporate these new vars into an if conditional to determine if the filter global vars get included in the myText:Filters code.
However, I cannot seem to code the if conditional into the myText:Filters code correctly.
I even tried seperating it out like so:
if (globals.data.glow1On = true) {myText:Filters [globals.data.glow1];
if (globals.data.stroke1On = true) {myText:Filters [globals.data.stroke1];
if (globals.data.shad1On = true) {myText:Filters [globals.data.shad1];
But Flash only makes the last filter true (kinda makes sense to me now why).
Is there a way to do it without having to make an if conditional with 7 permutations?
Cheers
Shaun

A: Possible to have if statement within filters code?

You are not coding the conditional properly. "=" is for assignment, "==" is for comparing equality.
if (globals.data.glow1On == true) {myText:Filters [globals.data.glow1];
if (globals.data.stroke1On == true) {myText:Filters [globals.data.stroke1];
if (globals.data.shad1On == true) {myText:Filters [globals.data.shad1];
Also, a conditional evaluates whether or not something is true, so for Boolean values you do not need to explicitly compare them...
if (globals.data.glow1On) {myText:Filters [globals.data.glow1];
if (globals.data.stroke1On) {myText:Filters [globals.data.stroke1];
if (globals.data.shad1On) {myText:Filters [globals.data.shad1];
Lastly, for what I see that you showed, the conditionals are all missing their closing brackets, and while you can use them, the brackets are not needed for single command conditionals...
if (globals.data.glow1On){ myText:Filters [globals.data.glow1]; }
if (globals.data.stroke1On){ myText:Filters [globals.data.stroke1]; }
if (globals.data.shad1On){ myText:Filters [globals.data.shad1]; }
OR
if (globals.data.glow1On) myText:Filters [globals.data.glow1];
if (globals.data.stroke1On) myText:Filters [globals.data.stroke1];
if (globals.data.shad1On) myText:Filters [globals.data.shad1];

Create a text file output from within a procedure

I can output to a file from within SQL+ using the spool command but how do I do this from within a procedure?
I have got a table called ABC and want to output columns A and B to a new text file based on variables pased through when the procedure is run, the name of the text file should be generated from a sequence?
Any info appreciated.
Cheers
Cliff

Hi,
U can use UTL_File Package, But the only constraint is it will write the file only on the server m/c and not on the client m/c.
Regards
Gaurav

Update statement in a procedure

update pol_notification a
set obj_id = v_presv_client_id
where a.obj_id=v_client_id and a.obj_type='client' ;
update pol_notification a
set obj_id = v_address_id
where a.obj_id=v_address_id and a.obj_type='address' ;
I am using these two update statements in one procedure but the tables are not being updated.
Any reason for that. Am i using the right statements?

Here is the procedure.....
CREATE OR REPLACE PROCEDURE SP_LOAD_CLIDUPDATA( )
     BEGIN
DECLARE v_client_id integer ;
DECLARE v_presv_client_id integer ;
DECLARE v_processed_client_id integer;
     DECLARE v_address_id integer;
DECLARE V_NUMBER integer;
DECLARE v_counter integer DEFAULT 0;
DECLARE cur_update CURSOR FOR
SELECT client_id,presv_client_id,nvl(processed_client_id,0),nvl(address_id,0)
FROM cli_dup_data ;
DECLARE cur_num CURSOR FOR
SELECT count(*) FROM cli_dup_data ;
open cur_num;
fetch cur_num into V_NUMBER;
close cur_num;
OPEN cur_update;
loop
IF v_counter = V_NUMBER THEN
end loop;
END IF;
FETCH cur_update INTO v_client_id,v_presv_client_id,v_processed_client_id,v_address_id;
if v_client_id = 0 then
COMMIT; --Commit transactions at batch level only
ELSE
If v_processed_client_id <> v_client_id then -- client_id is already processed
               update pol_notification a set obj_id = v_presv_client_id --Update client_id
     where a.obj_id=v_client_id and a.obj_type='client';
     update pol_notification a set obj_id = v_address_id -- Update address_id
     where a.obj_id=v_address_id and a.obj_type='address';
update pol_notify_history b set obj_id=v_presv_client_id,
client_seq_nbr_i = 1
where b.obj_id = v_client_id and b.obj_type='client';
update pol_notify_history b set obj_id = v_address_id
where b.obj_id = v_client_id and b.obj_type = 'address';
update pol_int_name set client_id = v_presv_client_id --Update client_id
     where client_id=v_client_id;
     update cli_dup_data set processed_client_id=v_client_id --Keep a record of updated client_id in processed_client_id
     where client_id=v_client_id;
end if;
          END IF;
set v_counter = v_counter+1;
END loop ;
CLOSE cur_update;

Multiple statements within an if statement

I am trying to add multiple statements within the ELSE part of an IF statement. Basically I display an error message if the fields are blank. But if all conditions are met, I want to update a collection then save that collection.
For example,
If (condition, UpdateContext({strError:"Please complete all fields."}), do statement1, statement2)
For now I have removed the if statement to get the update collection and save collection to work.
I may have found a workaround with multiple buttons.
If a save button if pressed and all fields are completed, then the else part of the statement display a rectangle with two buttons, yes and no. I can add all my code to the yes button select section. the no button hides the rectangle and buttons.
However, I would still like to know hos to utilize multiple statements within an if. Any comments would be greatly appreciated.

How to know child procedure Execution time with in parent procedure

Hi Team,
I've a requirement in which I need to get the execution time of a child procedure while its running in a parent procedure in PLSQL. While the child process is running, I want to know its execution time so that if it execution time exceeds more than 5 seconds than I want to through an error. Please let me know by what means this can be achieved in plsql.
Regards,
Tech D.

TechD wrote:
Hi Team,
I've a requirement in which I need to get the execution time of a child procedure while its running in a parent procedure in PLSQL. While the child process is running, I want to know its execution time so that if it execution time exceeds more than 5 seconds than I want to through an error. Please let me know by what means this can be achieved in plsql.
Regards,
Tech D.PL/SQL is NOT a Real Time programming language.
The procedure that invokes the child procedure is effectively dormant while the child runs.
Plus there is no easy way to know when 5 seconds has elapsed.

Delay in execution of statements within a procedure!

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