In SQL server the cursor is defined to retrieve row by row and process it. We can fetch records as FIRST, LAST, NEXT, PREVIOUS and SCROLL like that. Can we do the above in oracle. Else what is the use of cursor in Oracle. I know that it is a private area in which the records are processed.
View 6 RepliesI am having a OCCI problem, I try to retrieve a collection of user-define objects.
The major steps I am using are
1. define database object
CREATE OR REPLACE TYPE my_obj_t AS OBJECT
( id number, name varchar2(10) )
CREATE OR REPLACE
TYPE my_obj_tab_t as table of my_obj_t;
2. A stored procedure return a collection as out paramerter
my_stored_procedure(obj_list out my_obj_tab_t);
3. Using OTT to generate the *.cpp and header files.
4. Register out parameter like
vector<my_obj_t> vect;
stmt->registerOutParam(1, OCCIVECTOR,
sizeof (vect),
"MY_OBJ_TAB_T");
5. stmt->execute();
6. Try to get the results by
getVector(stmt, 1, vect);
I am getting compilation error:
Could not find a match for
oracle::occi::getVector(oracle::occi::Statement*,
int, std::vector<my_obj_t, std::allocator<my_obj_t>>).
Am I doing the right things ?What steps and function should I use ?
i want to produce a function who return XmlType element if she checks that a parameter (that i passed to here is contained in a row in a defined table)
for example
create table sec_form(
form_code VARCHAR2(8)
, sec_code VARCHAR2(5)
) ;
insert into sec_form values ('CSA','section1');
insert into sec_form values ('CSA','section2');
insert into sec_form values ('CSA','section3');
then i got my function
create or replace function checkIfSectionEnabled (elem XmlType,name_section varchar2)
return XmlType
is v XmlType;
CURSOR myCursor IS select * from sec_form where form_code = 'CSA';
begin
open myCursor;
loop
[code]....
now i'm gonna call the function (elem XmlType,name_section varchar2) and pass here "section1" for example ; and she must return me my xmltype element if she find "section1" finds section1 present;
when i try t compile i got:
Error(18,13): PL/SQL: Statement ignored
Error(18,26): PLS-00225: subprogram or cursor 'MYCURSOR' reference is out of scope
I wrote the function witch returns some information.
function get_cust_info (v_msisdn integer) RETURN sys_refcursor
IS
curs sys_refcursor;
BEGIN
open curs for 'select first_name, last_name, street, town
from the_table where MSISDN = :1' using v_msisdn;
RETURN curs;
end
How to call this function to write result into table? I just want to write function which returns more Varchar.
I'm dealing with an ORA-1000 error in a Pro*C application where all the cursors are correctly closed (or so it seems to me).
Here is the code for a simple program which reproduces the problem:
Each cursor is opened in a PL/SQL package:
CREATE OR REPLACE PACKAGE emp_demo_pkg AS
TYPE emp_cur_type IS REF CURSOR;
PROCEDURE open_cur(curs IN OUT emp_cur_type, dept_num IN NUMBER);
END emp_demo_pkg;
[Code]....
While testing the initialization parameter open_cursors is set to 50.
It's my understanding that Oracle doesn't close the cursors until it needs the space for another cursor, which in my test case seems to happen when I enter a value of 50 or bigger for "number of loops". To see how oracle is reusing the cursors, while the test program is running I run SQL*Plus and query v$sesstat for the session that's running the test with the following sentence:
select name, value
from v$sesstat s, v$statname n
where s.statistic# = n.statistic#
and sid = 7
and name like '%cursor%';
Even before I enter a value for number of loops I can see that the session opened 4 cursors and closed 2 of them:
NAME VALUE
---------------------------------------------------------------- ----------
opened cursors cumulative 4
opened cursors current 2
Entering a value of 5 for number of loops yields
NAME VALUE
---------------------------------------------------------------- ----------
opened cursors cumulative 11 <----- 7+
opened cursors current 8 <----- 6+
With a value of 30
NAME VALUE
---------------------------------------------------------------- ----------
opened cursors cumulative 36 <----- 25+ (apparently, Oracle reused at least 5 cursors)
opened cursors current 33 <----- 25+
With a value of 47
NAME VALUE
---------------------------------------------------------------- ----------
opened cursors cumulative 53 <----- 17+
opened cursors current 50 <----- 17+
Now I reached the upper limit set by the initialization parameter open_cursors.
Entering a value of 48, I get the ORA-1000 error.
ORA-01000: maximum open cursors exceeded
ORA-06512: at "SCOTT.EMP_DEMO
Since I open and close the cursor in the same loop iteration, I expect to find in every iterarion 1 explicit cursor and a number of implicit cursors (the PL/SQL call along with the so-called recursive cursors), but I don't expect the sum of all of them to be greater than 50. If my understanding is correct Oracle should be reusing the 50 cursors previously marked as "closeable", not raising the ORA-1000 error.
Is it possible to:
-define a cursor with bind variables
-get a cursor record from these cursor
-and pass the bind variable in the OPEN clause
Did'nt succeed as shown in the example.
SET SERVEROUTPUT ON SIZE 900000;
DECLARE
--works fine
CURSOR c1 IS SELECT * FROM USER_TABLES WHERE rownum<3;
--doesn't work
--CURSOR c1 IS SELECT * FROM USER_TABLES WHERE rownum<:1;
crec c1%rowtype;
BEGIN
--works fine
OPEN c1;
--isn't possible ?
--OPEN c1 USING 3;
[Code]....
i am running 11.2.0.1 on HP-UX PA-RISC (64-bit). My Memory max target is defined as 34 GB and memory target is 32 GB on the database. The host has 256 GB physical memory. i see memory utlization is almost 90% used when seen from Grid Control on the host and wondering, what's going on? when i see into more details, i see the following 3 HP Processes consuming around 3.6 GB memory and rest very small is consumed by Oracle processes. Who's using the rest of the memory?
View 3 Replies View RelatedI am trying to create a new data type but keeping getting a ORA-0902 invalid data type error. I am using the example show at:
Guess I cannot post a link until I have posted more than 5 messages so here is the link another way:
www(dot)psoug.org/reference/type.html
Specifically, all the steps work up to Create Table which fails with the error.
By work -- I mean the type gets created & the 3 select statements prior to Create Table confirm the existence of the ssn_t data type.
I dont know where was the mistake, getting column ambiguously defined error
CREATE OR REPLACE PROCEDURE FLXUSER.testgg
AS
BEGIN
/*----------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------*/
BEGIN
[code]....
just looking around to use the new feature available in oracle 11g to convert the dbms_sql numeric cursor to reference cursor, how to do it?
parse and execute the sql string first with dbms_sql and then convert it to ref cursor?
I want to return ref cursor based on explicit cursors
create table jumbo(id number, name varchar2(20));
insert into jumbo values(1,'jumbo');
create table mumbo(id number, name varchar2(20));
insert into mumbo values(1,'mumbo');
commit;
[Code].....
The above procedure has compilation errors when I am trying to open ref cursor
LINE/COL ERROR
-------- --------------------------------------------------------
20/24 PL/SQL: SQL Statement ignored
20/38 PL/SQL: ORA-00942: table or view does not exist
32/24 PL/SQL: SQL Statement ignored
32/38 PL/SQL: ORA-00942: table or view does not exist
SQL>
Can i user exist when cursor will using For Cursor .
View 15 Replies View RelatedI am trying to create & use a new data type but keep getting a ora-0902 invalid data type error running on 10g express. The create type and select statements execute fine and select confirms the ssn_t is a type. The create table statement fails with the invalid data type error.
Here is an example.
CREATE TYPE ssn_t AS OBJECT ssn_type CHAR(11));
SELECT object_name, object_type
FROM user_objects WHERE object_type = 'TYPE';
CREATE TABLE Z (A CHAR(4), B SSN_T);
recently i saw SYS_CONTEXT function in one package.
query, which can display the All Namespaces defined in database.
Can we override the pre defined functions in oracle. I am able to do this in my schema. But if DB server contains more than one schema do I need to write the same procedure in all schemes.
we can call the same procedure with schema name from different schemes also . But is there any way to over ride the actual function provided by oracle (just like over riding the equals method of object class in java).
create or replace function to_number(var varchar2) return number
is
no number := var;
begin
return 99999;
end;
SQL> select to_number(' 234 ') oracle_function , dbo.to_number(234) user_function from dual;
ORACLE_FUNCTION USER_FUNCTION
--------------- -------------
234 99999
i have flash item on canvas weh nthe nw form insatance i have that erros frm 41344 ole object not defined
View 5 Replies View RelatedThat is I have created the User Defined Data Type as following. CREATE OR REPLACE TYPE Bit_Type AS OBJECT(Bit NUMBER(1,0));
After completing this creation of new UDT, I am trying to create the table with this UDT as follows, CREATE OR REPLACE TABLE Sample_Bit ( RegID Bit_Type);
I received an Error Message like:
SQL Error: ORA-22913: must specify table name for nested table column or attribute
22913. 00000 - "must specify table name for nested table column or attribute"
*Cause: The storage clause is not specified for a nested table column or attribute.
*Action: Specify the nested table storage clause for the nested table column or attribute.
Is it possible to easily set up a single User Defined Metric, to monitor all the users quotas? I know I can do it, if I make individual metrics for each user. But was hoping there was a simple way of combining them all into a single metric.
I am using Oracle 10G2 Standard Edition on a windows 2003 Server.
I am getting an above errors while starting the emctl start dbconsole..
View 9 Replies View RelatedI'm calculating a Z score based on some simple numerical data thus:
create table t (id number, val number);
insert into t values(1, 1795);
insert into t values(2, 1753);
insert into t values(3, 1743);
insert into t values(4, 1876);
insert into t values(5, 1848);
[Code] .....
the logic is quite simple - calculate a moving average over the previous 12 rows, and a stdev over the same window. Then subtract the prior row's moving average from the current value, and divide by the prior row's stdev.
The issue is I want to expose this logic in a BI tool (OBI EE v10g), meaning I can't use the nested analytic functions. How to achieve this logic in a single analytic pass? The sql above took about 2 minutes to write this morning, then I've spent all day looking at user-defined aggregate functions, but haven't even been able to get the first step, the moving average, working. I can understand that I can probably create an udaf to replicate the avg(val) over (order by id ROWS BETWEEN 11 PRECEDING AND 0 FOLLOWING) functionality, but I can't see how to bundle the logic for the other three steps in the calculation into this.
From what I've read, the ODCIAggregateMerge should allow me to combine different threads that can return the different values I need for the current row calculation. Is this correct?
The only example udafs I can find are either not relevant (STRAGG) or very simple (ie don't appear to invoke multiple passes). I've also had a look at the COLLECT function, but again I can't see a way to use this.
I migrate schema with data from oracle 10gR2(Windows) to oracle RAC 11gR2 (Linux).My JOBS are created but they are not running on defined schedule. but they run manually successful.
----script of my job are as below --------
BEGIN
SYS.DBMS_SCHEDULER.DROP_JOB
(job_name => 'JHON.TAX_IT);
END;
/
[code]...
I have designed a Login form which takes username, password and connect string is hardcoded.I have compiled it, made an fmx file. created a shortcut to desktop. given the BIN path in shortcut.
when i want to lauch it, oracle's default login popup is shown.It can be by passed while defining username/password@string in shortcut properties but it reveals the password. every one can access it. I want to launch my own form without logging in to oracle. how can i avoid default login popup?
Can we able to declare a user define exception name as per defined exception name?Ex: we have predefined exception called :"NO_DATA_FOUND "
Now in my PL/SQL block can i able to declare "NO_DATA_FOUND" like
Begin
no_data_found exception;
//statements
raise no_data_found;
end
I have made a function to add two number create or replace function add_num(a in number, b in number) return number
as
begin
return a+b;
end;
/
i run it via
select add_num(2,5) from dual;
my question is how to call add_num in procedure.
If a user defined function in Oracle may throw and catch exceptions depending on input, now does the Oracle logs the exception? Fundamentally we are asking if Oracle logs any random DML errors (not bulk operation). We hope not, as we do not want our client DBA get concerned. There might be many levels of settings in Oracle to log or not log. So if Oracle may log it depending on setting, how do we suppress it either at Oracle specific schema level, or function level?
This is my user defined function:
create or replace FUNCTION ISNUMERIC(char_in CHAR) RETURN NUMBER IS
n NUMBER ;
BEGIN
n := TO_NUMBER(char_in);
RETURN 1;
EXCEPTION
WHEN OTHERS THEN
RETURN 0;
END;
I am getting ORA-00918: column ambiguously defined error when running the below SQL query. I am gettig this error at the last line of code where v1.objectid=v2.parent_object_id
I have not written this query so i find difficult to debug it. Also i am not that well verse with SQL
select distinct v1.UNIQUE_DOC_NAME,v1.UNIQUE_DOC_NAME_1,v1.vendor_object_name,v1.display_name,v1.document_description,
[Code].....
How to view the number of locks defined for a database? I am using Oracle 10g.
How to calculate the number of locks for a given sql select statement?
say for example,
select a.eno,b.ename,c.salary,d.dob,e.address
from a,b,c,d,e
where...
...
..
Assume all of them are row level locking.
I want to calculate the number of locks . How many locks will be held while running the above query?
Through sql*plus, how can I copy a user-defined type from other schema to mine?
I've granted the execute object privilege over the user-defined type to my user, so I can use the type.
I know I can manually write and create the type, but I wanna learn (if exist) a statement to copy the user-defined type, something like:
CREATE TABLE x2 AS
(SELECT *
FROM x1);
I'm testing ORACLE DATABASE 11g R2 over Windows O. S.
I am migrating sybase to oracle database. A Java developer needs money datatypes.I said to them, please change the cast(<value> as number(19,4) in java code side. but they are not accepted because money data type is used most of the places.
select cast(0 as money) from bank_trans; this sql statements present in java code. I need to create user defined type is equivalent to money datatype.
My steps
I have create user defined data types
create or replace type money as object(money as numbeer(19,4)
select cast(0 as money) from dual;
it shows inconsistent datatypes error.
create or replace type money is table of numbeer(19,4);
select cast(0 as money) from dual;
it shows inconsistent datatypes error.
How can I apply a user metric for DB (single database) using a script or cli?
clear my question:
Can I create a User Defined Metric using SQL code, and not via the graphical interface?