SQL & PL/SQL :: Preventing Concurrent Running Of A Stored Procedure
Oct 9, 2012
I have a stored procedure that is run from a command within our Clarity application.
The procedure involves some SQL Reads and SQL Inserts.
We have experienced users running the SP at the same time (slim chance to do this) and it creating duplicate entries.
if there is a clever way of preventing the same SP to be run concurrently?
Initially I was thinking of having the first step of the SP to interrogate a flag into a custom table - which the SP then sets to 1 if it is running, and 0 at the end.
Are there better more efficient/effective ways of doing this?
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Nov 16, 2012
We are experiencing a problem with SSO causing 2nd or 3rd concurrent Oracle sessions to hang. The Oracle application hangs during loading and the task manager has to be used to close the application.
I have tested logging onto our application servers using SSO and I cannot load more than 3 concurrent Oracle sessions. When I bypass the SSO and logon to the same server I can load more than 20.
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Oct 8, 2010
having a concurrent request that is always up?
As part of an interface I've implemented, I have a 'listener' concurrent request that registers for a dbms_alert and uses wait_one to detect appropriate alerts. When an alert has been detected, a loader concurrent request is kicked-off, before the listener loops back to the wait_one call. I've set a nominal wait_one timeout period of ten minutes. It is not envisaged that many alerts will be raised - maybe several a day at the moment, but I am always reluctant to use polling unless I can avoid it.
Our EBS system has gradually ground to a halt after the release of this program, and the DBAs suspect this as a possible cause. CPU usage was very high overall, with various java-related usage figure also being high.
The overall idea is to have a 'poor-mans' equivalent of OAI, so I'd hope to add more listeners, with each being the equivalent of an OAI adapter.
Surely a big powerful thing like Oracle EBS is not going to keel over just because of a few processes doing little more than waiting for alerts?
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Feb 24, 2011
I am trying to execute two scripts at the same time (concurrent) in Oracle SQL Developer. I know we can schedule a job using DBMS_job package and define the job. But is there any other way of doing it using Threads ?
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Oct 26, 2010
My requirement is:
I want to run multiple Reports Concurrently, being called from my Form.
Suppose I have 10 Reports Say Report1, Report2, ....Report10.
I am using "RUN_PRODUCT" to call these Reports from my Form. But it's taking too long time to run all the Reports one after another. Can I run all these Reports Concurrently at the Same time.
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Jan 23, 2013
I have a problem. I have created a report that will list out details of checks using Report Builder. I use XML Publisher to register a template for the report. When running the program through concurrent request, the output will come in pdf format but are not in order.I have add 'Order By' statement in my sql scripts in report builder. Its working fine if test in report builder but not in concurrent program.
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Dec 24, 2012
Execute sp1 param1...param6
Execute sp2 param1...param8
Execute sp3 param1...param4
All these stored procedures deals with insert/updated transactions . i need to create a new stored procedure to execute all this in a single stored procedure which will be something like
create procedure sp4(param1...param8)
as
begin
Execute sp1 param1...param6
rollback if any error
Execute sp2 param1...param8
rollback if any error
Execute sp3 param1...param4
rollback if any error
end;
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Jul 28, 2010
My problem is that i don't want to execute a procedure from my scheduler if the previous execute didn't finished. Is there a manage view or table that provide the procedure state?
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May 24, 2011
I have a package which has two procedures in it.
The second of which was put in just as a test:
PROCEDURE DST_RPT_INVOICE_REPRINT(refCur OUT Dsti_Rpt_Init_Pkg.RC, param_locationid VARCHAR2,
param_companycode VARCHAR2, param_frominvdate DATE, param_toinvdate DATE, param_project VARCHAR2,
param_invtype VARCHAR2, param_printed NUMBER) AS.....
Dsti_Rpt_Init_Pkg.PRINT_OUTPUT(strSql);
END DST_RPT_INVOICE_REPRINT
All this has within is an SQL statement which is built up (using the string, 'strSql') How can I view the output of a refCur to check what the final strSql is?
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Dec 21, 2011
PFB code i used to schedule a job as per my requirement. And the procedure is executing fine, but when im about to run it is getting hang.
create or replace procedure scheduler_alert(frq varchar2,intrvl number) is
begin
dbms_scheduler.create_job(
job_name=>'scheduler_alert',
job_type=>'stored_procedure',
job_action=>'alertlog_error',
start_date=>SYSTIMESTAMP,
repeat_interval=>'FREQ='||frq||';INTERVAL='||intrvl,
enabled=>true,
auto_drop=>false);
end;
/
When im trying to run the job it is getting hang.
exec dbms_scheduler.run_job('scheduler_alert');
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Aug 28, 2009
how to use a synonym in a stored procedure.
I have created a public synonym for a remote table on a different schema.
Im now trying to use the synonym to load that data into a temporary table in my schema using a stored procedure and im getting an error.
how to use a synonym in a stored procedure.
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Jan 10, 2012
I want to call a shellscript which is in application sever through a stored procedure in database sever.i dont do this by dbms scheduler.
May i knw some sytax with examples and the settings to change to accept the external procedure call.
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Mar 12, 2010
I've written a Java stored procedure that deletes some provided file. The PL/SQL procedure looks like :
procedure delete (file in varchar);
The procedure does the work correctly when the provided file name exists on the DB server, but doesn't when the file is ou of the DB server.
Is there a way to resolve this ?
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Jun 11, 2013
I would like to use dynamic sql for an select query with where clause and then use the dynamic sql in pl/sql stored procedure. how to create dynamic sql (select query) and how to use it in pl/sql stored procedure.
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Nov 20, 2011
I entered the following procedure code into SQLPLUS for compilation, but it just hangs. I suspect the cause is an infinite loop, but I can't locate it.
CREATE OR REPLACE PROCEDURE populate_sales_fact
AS
BEGIN
INSERT INTO sales_fact
(orderid,
prod_key,
order_day_key,
shipping_day_key,
sales_dollar_amount,
quantity,
cust_key,
emp_key)
[code]....
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Apr 18, 2011
I have a sequence my_seq in schema schema1. I have granted select on this sequence to schema2. Doing :
select schema1.my_seq.nextval from dual
in schema2 work as expected. However when I try to compile a package body in schema2 using my_seq in an insert statement, it fails with:
PLS-00302: component 'MY_SEQ' must be declared
What's even stranger is that I have stored procedures that are using the exact same code that are currently compiled and working. Recompiling them yields this error. How is this possible?
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Jun 9, 2010
Interviewer asked me "Tell me Diff. between Stored procedure vs. Function ".....I given technical answer which is mentioned in my Faq..But he asked me , dont gv me answer in technical manner..He was interested in which case u use Stored procedure and Function....
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Oct 1, 2012
I have a procedure with following code which runs in infinite loop.
BEGIN
LOOP
line :='Test Message';
UTL_SMTP.write_data(l_mail_conn, line || Chr(13));
END LOOP;
EXCEPTION
WHEN OTHERS THEN
UTL_FILE.FCLOSE(NAMESFILE);
END;
I executed the procedure and disconnected from sql developer by killing the sql developer process from task manager. Reconnected and changed the code and when i tried to compile the procedure. It is not compiling, because the procedure is already running in infinite loop by some other session.
Is is possible to stop the running procedure without killing the session.What will happen if the procedure is not stopped which is running in infinite loop.When I queried the following found that the session is still ACTIVE and CPU used showing as '0' and executing the procedure.
select
SST.VALUE CPU, S.USERNAME, S.SID, s.status,S.SERIAL#, SQL_TEXT
FROM
V$SESSION S,
V$SQLTEXT_WITH_NEWLINES T,
V$SESSTAT SST
WHERE S.SQL_ID IS NOT NULL
[code]....
Can I do force drop or alter this procedure?
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May 22, 2012
how to you execute a stored procedure in ORACLE..For example in SQL SERVER its just
EXEC Proc_Name ParameterValues
How the hell do you do this in oracle i just want to test if my stored procedure works.
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Jul 23, 2010
connect the following concepts/information I've been collecting. This is not my field but I'm interested in filling some of mine conceptual/technical gaps.
From a JDBC perspective, one of the benefits of Prepared (and so Callable) statements have over the regular ones is that the statement is "compiled"(*) once and then reused (performance gain).
(*) for SQL statements: building of parse tree and exec.plan
In which way can this notion be extrapolated to invocation of Oracle Stored Procedures through CallableStatements? (After clearing my doubts, I may end concluding that the only relevant feature of CallableStatements is their capacity to deal with stored procedure invocations)
According to procedure's precompiled execution plan SQL compilation implies execution plans generation PL/SQL compilation implies P-code generation and, SQL statements (from PLSQL code) are treated no differently by Oracle than SQL from Java or C/C++. These SQLs will be parsed and execution plans for those SQLs created.
...
When the PL code executes the SQL statement, only then does the SQL engine receive the SQL, parse it, and create an execution plan for it.
Therefore, even when the stored procedure can be parsed and cached in SGA (through the OracleConnection.preparedCall("proc") invocation), the SQL statements won't be effectively compiled until they are executed, right? And going deeper, will those SQL statements be cached to be reused in future invocations of the containing stored procedure? Is this a characteristic of the regular stored procedure execution in Oracle? or is it due to the CallableStatement "origin"?
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Apr 23, 2009
i have this stored procedures:
create or replace
PROCEDURE INSERTXML2(
p_xml_in XMLType,
p_table IN VARCHAR2 ) AS
v_context DBMS_XMLStore.ctxType;
v_rows NUMBER;
BEGIN
[code]....
that works well in little XML files but in XML files that are bigger the stored procedures to not work because string maximum length in Oracle is 4000.
im working with Oracle SQL Developer and Sap Mii, the XML file is generated in Sap Mii and then i have to pass it in one step to database..
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Jul 15, 2013
I'm trying to create a stored procedure that has two temporary tables within it, and then queries both them tables and inserts the results into a table. I created the script but when they try to run in on the server it wont run.
CREATE OR REPLACE PROCEDURE UpdateFIDB_SP
IS
BEGIN
CREATE GLOBAL TEMPORARY TABLE myAAAA
AS
(SELECT AAAA.1111, AAAA.2222, BBBB.3333_EXT, CCCC.4444, DDDD.5555, DDDD.6666, DDDD.7777,
DDDD.8888, AAAA.9999, EEEE.1010, EEEE.1A1A, EEEE.1B1B, FFFF.3333_LO, FFFF.1C1C,
[code]........
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Jan 11, 2008
I am new to the wonderful world of Oracle. I want to be able to view the results of a stored procedure in an output window, say out of Oracle SQL developer. Unfortunately it appears I need to write some more code to actually view the data. Consider the following:
CREATE OR REPLACE
PROCEDURE TESTSPROC2(c_test out sys_refcursor) AS
BEGIN
open c_test for
select * from test_table order by id_no;
END TESTSPROC2;
to view this I need something on the order of:
DECLARE
cc sys_refcursor;
r cc%rowtype;
BEGIN
TESTSPROC2(C_TEST => cc);
loop
fetch cc into r;
exit when cc%notfound;
DBMS_OUTPUT.PUT_LINE('C_TEST = ' || r.data_element);
end loop;
close cc;
END;
But this is weakly typed so I get all sorts of errors associated with the row definition of line 3. create the record based on the table (something like: r test_table%rowtype).
What I really want is a generic reader than can be ported around to output any sproc I put together.
On a more generic note, why Oracle has chosen to make PL/SQL inordinately more complicated than say MS SQL/Servers tSQL? I mean in tSQL I would just write:
CREATE OR REPLACE PROCEDURE TESTSPROC2
AS
select * from test_table order by id_no;
GO
and viola, a nice result set spits out in Query Analyzer (or a .net application).
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Jan 12, 2010
I have to call oracle stored procedure or a function to update user id of one or several rows depending on what user selects.
The oracle person will be writing the stored procedure or function. I am a java developer but was never involved in writing oracle functions. So..
I want to know what is the difference betn stored procedure and function?
From java point of view are there any guidelines when to prefer one over the other(betn stored procedure and function).
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Mar 21, 2007
After compiling a simple valid SP in Toad for Oracle 8.5.1:
CREATE OR REPLACE PROCEDURE proc_test
AS
DECLARE v_name VARCHAR2(20) := 'Ed Edson';
BEGIN
DBMS_OUTPUT.PUT_LINE('Hi, my name is ' || v_name);
END;
The SP is not added to the schema. Also the three status fields (status, created and Last Update in the Procedure Editor remain <Unknown>. It is not a rights or privilege issue, because the creation works perfectly in SQL*Plus!
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Jun 15, 2011
I want to call an exe file through DB Procedure. How it is possible?
1create or replace procedure proc3
2is
3begin
4 host('calc');
6* end;
from FORMS it works fine but it does not work through DB. I found same question through this link
[URL].........
but no answer is given.
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Feb 22, 2012
i have created a stored procedure with a cursor in order to perform a function where the annual_sal from the employee_annual_sal table is refered and checked. The empno for all the records which satisfies the condition mentioned inside the loop should be displayed in an variable. My code is below
create or replace PROCEDURE sp_test_cursor(out_empno OUT number)
IS
v_get_data number;
v_get_empno number;
cursor c1 is
select annual_salary
from employee_annual_sal;
[Code]...
What should i do to return mulitple values in a single variable??
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Apr 3, 2012
I have the following Stored Procedure:
CREATE OR REPLACE PROCEDURE AFESD.TEST_PROC (I_NUM IN NUMBER,
I_NUM2 IN NUMBER DEFAULT 3, D_DATE IN DATE DEFAULT sysdate,D_OUT OUT DATE)
IS
[Code]....
I dont know what I need to pass in order to give it the default value.
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May 27, 2011
i Have Write A SP But Show me Error when i Compile It.
Create or Replace Procedure PREPAIDEXPENSE(v_OperationType varchar2(1))
v_ATTM_TXN_TYPES_CODE ACC_TXN_TYPES_MST.ATTM_TXN_TYPES_CODE%TYPE;
v_ATTM_TXN_TYPES_DESC ACC_TXN_TYPES_MST.ATTM_TXN_TYPES_DESC%TYPE;
v_ATTM_STATUS ACC_TXN_TYPES_MST.ATTM_STATUS%TYPE;
v_ATSM_STAGE_ID ACC_TXN_TYPES_MST.ATSM_STAGE_ID%TYPE;
v_PP_ACCOUNT_GL ACC_TXN_TYPES_MST.PP_ACCOUNT_GL%TYPE;
[code]....
Error:SQL command not properly ended
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Nov 18, 2010
How to take a stored procedure last run without using DBA_AUDIT_TRAIL sys table.
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