When Are Statements Within Stored Procedure Compiled
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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Sep 26, 2013
I have compiled some procedures, at the time of compilation i saw some warnings & errors but i did not notice, Now can we see that errors or warnings in db console or any other way.
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Aug 17, 2010
I made one code for understanding purpose its complied successfully, but not show result...its give me message procedure successfully completed.
Code is :
BEGIN
For emp_rec in (SELECT * FROM EMP)
LOOP
DBMS_OUTPUT.PUT_LINE(emp_rec.ename);
END LOOP;
END;
/
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Aug 8, 2012
I have a requirement to create a packaged proc which lists down a set of database objects and its statuses whenever the status of objects is changed as valid/invalid in user_objects. Also, those valid objects need to be compiled while running the packaged proc.
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Dec 17, 2010
I have got 2 users as user1 and user2.I have used the following statements from user 'user1':
create role GENEVAOBJECTS;
grant select, insert, update, delete on PRODUCT to GENEVAOBJECTS;
grant GENEVAOBJECTS to user2;
In the above statements, product is a table. Now, I could able to access this table from user 'user2'. But however if I write a procedure in user2 schema accessing the table product, then the procedure is not getting compiled.
create or replace procedure test_prc as
v_test number(9);
begin
select product_id into v_test
from PRODUCT where rownum=1;
[code]...
why I cannot access that table from procedure?
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Nov 20, 2012
if an API is available for deleting Bank statements stored in tables CE_STATEMENT_HEADERS and CE_STATEMENT_LINES.
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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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Oct 23, 2013
One of the procedures that am working on is failing with ORA-0000: normal, successful completion error.
The procedure has got several update and delete statements and have logging enabled after each step. The problem with that again is, each time the log table gets updated thereby losing the history of until what point the procedure ran successfully.I have this issue only in production environment and unable to simulate it in dev environment which limits my options of troubleshooting the procedure code. I was using SQLERRM in the code.
Is there a way I can identify the bad records/ record causing this issue? Am very new to PL/SQL and do not know how to proceed with this.How do you debug this sort of issues??(where one procedure internally invokes another one which again invokes other one etc)
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Sep 15, 2010
I want to read the oracle procedure/function and find out the no of valid sql statment lines in a procedure:--
Consider the procedure is like :--
PROCEDURE TESTVAR IS
l_local number;
i integer;
j integer;
BEGIN
SELECT real_id_number
[code]....
Now i want to read this procedure in such a way that it should return me below output :-
Seq_No Sql_Statements
1 SELECT real_id_number
2 into l_local
3 FROM master_var v
4 where v.variable_type = i
5 AND V.ID_NUMBER = j ;
how to achieve this output.
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Jul 16, 2012
here's my question.
(I'm using PL/SQL Developer with Oracle 10g)
I have an table 'tbcontrol' where for each row I can have one or more sql statements (DML or DDL) in an column.
Example:
task | sql_scripts
1 | create table t1 (c1 number); insert into t1 (c1) values 100;
2 | create table t2 (c2 number); alter table t1 modify c1 not null default 0;
3 | alter table t2 modify c2 not null default 0; alter table t1 add c10 varchar2(10); create table t3 (c3 number not null default 0;
I need to create a procedure where I can pass an task number to execute the sql statements which are in the column 'sql_scripts'. Something like this:
create or replace sp_run_scripts (v_task number)
is
v_scripts varchar2(2000);
begin
select sql_scripts into v_scripts from tbcontrol where task = v_task
execute immediate v_scripts;
end;
But, here I'll have some problems:
- The script will have semicolons (EXECUTE IMMEDIATE doesn't support);
- If I put a begin/end like a PL/SQL script, I can only run DML statements because DDL statements have implicit commit.
- I can't use a cursor for execute each statement at a time because the scripts have multiples-rows. Even if I search for semicolons to 'separate' the scripts in the cursor (using SUBSTR and INSTR functions), I'll have problems with the semicolons between '' (quotations marks).
Now, I admit I'm lost.
Is there another way to make this process work?
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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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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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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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Jul 15, 2013
I have been developing in MS SQL for about 15. So I'm still getting use to the syntax and features within Oracle.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,
AAAA.1D1D
[code].....
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