GLOBAL TEMPORAY TABLE with the ability for a user to see others's entries
I have a list of record available for many user at the same time for them to work on.
Every one has the tendency to chosse the first record...
I want each of the users to be able to chose a different record once the preceding record has been selected by another user.
It would have been somthing like a GLOBAL TEMPORAY TABLE but with the ability for every user to see others records
so I would do and anti-join...
Does anyon have an idea on how I could implement such a behavior?
You will not be able to use a global temporary table for such a requirement.
It sounds like you will need a permanent table, which you will need to lock certain records (prohibiting users from taking those already in use), you can look at using the DBMS_LOCK package for this.
That's just speculation based on what you've typed, if you provide more details you make get more specific help.
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Want to know in which table is the sessionid for a user stored
Hello,
I am using Obiee 10g .
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ThanksHi user,
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...........HUB
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int gi1/2
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Thank YouNote that DDL commands such as create table cannot be directly used in PLSQL you may be able to use execute immediate, the workbench uses a wrapper function for DBMS_SQL
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2 CREATE GLOBAL TEMPORARY table fred ( myint integer) ON COMMIT PRESERVE ROW
3 end;
4 /
CREATE GLOBAL TEMPORARY table fred ( myint integer) ON COMMIT PRESERVE ROWS;
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begin declare exit for goto if loop mod null pragma raise
return select update while <an identifier>
<a double-quoted delimited-identifier> <a bind variable> <<
close current delete fetch lock insert open rollback
savepoint set sql execute commit forall
<a single-quoted SQL string>
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AUTHID CURRENT_USER AS
PRAGMA AUTONOMOUS_TRANSACTION;
v_CursorID INTEGER;
v_RowsReturned INTEGER;
BEGIN
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DBMS_SQL.PARSE(v_CursorID, in_Statement, DBMS_SQL.NATIVE);
v_RowsReturned := DBMS_SQL.EXECUTE(v_CursorID);
DBMS_SQL.CLOSE_CURSOR(v_CursorID);
EXCEPTION
WHEN OTHERS THEN
DBMS_SQL.CLOSE_CURSOR(v_CursorID);
RAISE;
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showing wrapper being used:
begin
DDL_Manager('CREATE GLOBAL TEMPORARY table fred ( myint integer) ON COMMIT PRESERVE ROWS');
end
In the oracle migration workbench the create table statements are done before any stored procedures are executed, so that stored procedures will not be invalid due to tables not being created yet. If all tables were referenced through dynamic sql the tables could be created on the fly.
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Problem with global temporary table with rows
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I need to create a table for generating a report in a oracle 10g database. Data population in the table depends on the parameter passed from front end.
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I have created the global temporary table as follows:
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Look thru the following links and use the chat option if required for your situation:
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https://helpx.adobe.com/x-productkb/policy-pricing/cancel-membership-subscription.html
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etc.
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Thanks for your help!Hi Craig:
thank you very much. To solve the mystery : ) :
I want to drive a stepper motor with a specific frequency. To get the current degree value of the motor I would like to measure the current time (from the beginning of the move on). (With a formula I get the degree value out of the time)
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Steffi
Attachments:
motor.vi 238 KB
sensor.vi 59 KB -
Trigger to update field on a table with the sum of fields on another table
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Trigger create was not successful for the following reason:
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create or replace trigger "ASSIGNMENT_TIME_TRACK_T1"
AFTER
insert or update or delete on "ASSIGNMENT_TIME_TRACK"
for each row
begin
update assignments
set time_spent = (select sum(time_spent)
from assignment_time_track
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end;
If what I've posted isn't clear or more detail is needed, let me know and I'll respond with a complete description of both tables and my goals for each table. Thanks in advance for any help. I will also gladly accept links to tutorials or lessons that explain how to do this sort of thing.
Edited by: bobonthenet on Mar 9, 2009 2:01 PMHi,
If the assignments table has only one row per assignment, why is the primary key the combination of name and time_spent? If you have two two assignments called "Lab Report", isn't it possible that you would spend the same amount of time on each of them? I suggest using a sequence to assign an arbitrary id number to each assignment, and use that as the primary key.
What does each row in assuignment_time_track represent? It sounds like it is a chunk of time spent on one assignment (that is, you want to know that you spent 90 minutes on Tudesday morning working on some assignment, and that you spent another 30 minutes on Tuesday afternoon working on the same assignment). If so, then there should be a foreign key constraint in assignment_time_track referencing the primary key of assignemnt, and not the other way around.
Alex is right; you can get the total time spent on each project in a query or view; there is no need to replicate that data.
If you're new to Oracle and SQL, you should invest your time in getting more experience with the basics: everyday things like queries (using joins and GROUP BY) and views, and not spend much time on things that aren't used that much, like triggers.
If you really did have to copy the data, then you could have a trigger on assignemnt_time_track that kept the total in assignment up to date, like this:
UPDATE assignment
SET total_time_spent = total_time_spent
+ NVL (:NEW.time_spent, 0)
- NVL (:OLD.time_spent, 0);I suggest you name the column in assignment something different than the column in assignment_time_track, to reduce the risk of confusion. Also, since they represent different things, the same name can't be the most descripttive for each of them.
In case you're wondering about the use of NVL, above: It allows the same statement to take care of the situation when you INSERT, UPDATE or DELETE a row in assignment_time_track. That is, if you UPDATE a row in assignment_time_track, and change the time_spent from 60 to 90, then you want to add the new time (90) and subtract the old time (60) fro the total_time_spent in assignment: that is, total_time_spent would increase by 30. If you INSERT a new row into assignment_time_track with time_spent=30, you just need to add the new time_spent (30): there is nothing to subtract. But rather than write an IF statement and a second UPDATE for that situation, you can just rely on hte fact that all :OLD values are NULL iwhen INSERTing, and treat that NULL as a 0. Likewise, when DELETing, all :NEW values are NULL.. -
Ah, the new fora. Still getting used to them. Here are some reflections on the Pros & Cons, as I see them with IE7:
Pros:
The formatting is nice, as is the ability to attach files.
Being able to add a link quickly, to open in a second browser window is nice.
The indentation of replies, to other than the OP.
Cons:
Sometimes really slow, but could just be server overload, or maintenance.
The slight color differentiation between read, (updated) and unread could be much better.
The loss of the "red flags," is greatly missed.
The "New" banner is greatly missed.
The expansion of all replies, when opening an older thread is bothersome.
Learning to NOT use Back, once I’ve posted, is coming along slowly.
When a forum has multiple pages and you are past #1, going back to "Discussion" always takes me back to page #1. There has got to be some navigational trick that will get me back to page #X, regardless of whether I’ve posted, or am just reading.
The loss of many stickies, especially some of the FAQ’s and instruction on posting good questions with proper info.
Just some personal observations, with more in the works, as I explore.
HuntJerryK,
Yes, we are all in similar boats, regarding learning to live with the new fora. You guys just have the extra tasks of doing any modifications.
As to the "Previous/Next Page" issue. I do not think I was clear on my "problem." That, or maybe I misunderstood your reply.
To clarify *my* problem:
Say that there are multiple pages on a particular forum. I am now reading articles on Page 2. I read the article, and hit Back (browser), or mouse button (left side for me), to get back to the discussions. I always get Page 1, and have to now hit the "2," or "Next" to get to Page 2 to move onto the next article. In all other fora, that I am familiar with, if one is on Page 2 (in my example) of the forum article list, and they read an article on that page, when they choose Back (however they choose it), they are taken to the article list page, where they were, not to Page 1, having to then navigate back to Page 2, or whatever. It is the seeming inability to get back to the article list page, that there were just on, without having to navigate to it, always from Page 1. It's the same if using the "Discussions" link from either location - goes back to Page 1 regardless of where one was in the page numbering scheme.
It's like having a sub-Menu in Encore, where you make scene selections and never being returned to that previous Menu - only back to the Main Menu and having to navigate back to the sub-Menu every time. It's like the End Action (the Back on the browser) defaults to the "Main Menu," and never to "Previous Menu."
Once one gets to about Page 5, they not only have to navigate back to Page 5, but also remember that they were on Page 5.
I hope that it's just OE on my part and there is really an easy way to go about reading all of the articles on Page 2 (or whatever) and not having to re-do the navigation after every article.
Thanks and good luck to you fella's.
Hunt
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How to encrypt column of some table with the single method ?
How to encrypt column of some table with the single method ?
How to encrypt column of some table with the single
method ?How to encrypt column of some table with the single
method ?
using dbms_crypto package
Assumption: TE is a user in oracle 10g
we have a table need encrypt a column, this column SYSDBA can not look at, it's credit card number.
tha table is
SQL> desc TE.temp_sales
Name Null? Type
CUST_CREDIT_ID NOT NULL NUMBER
CARD_TYPE VARCHAR2(10)
CARD_NUMBER NUMBER
EXPIRY_DATE DATE
CUST_ID NUMBER
1. grant execute on dbms_crypto to te;
2. Create a table with a encrypted columns
SQL> CREATE TABLE te.customer_credit_info(
2 cust_credit_id number
3 CONSTRAINT pk_te_cust_cred PRIMARY KEY
4 USING INDEX TABLESPACE indx
5 enable validate,
6 card_type varchar2(10)
7 constraint te_cust_cred_type_chk check ( upper(card_type) in ('DINERS','AMEX','VISA','MC') ),
8 card_number blob,
9 expiry_date date,
10 cust_id number
11 constraint fk_te_cust_credit_to_cust references te.customer(cust_id) deferrable
12 )
13 storage (initial 50k next 50k pctincrease 0 minextents 1 maxextents 50)
14 tablespace userdata_Lm;
Table created.
SQL> CREATE SEQUENCE te.customers_cred_info_id
2 START WITH 1
3 INCREMENT BY 1
4 NOCACHE
5 NOCYCLE;
Sequence created.
Note: Credit card number is blob data type. It will be encrypted.
3. Loading data encrypt the credit card number
truncate table TE.customer_credit_info;
DECLARE
input_string VARCHAR2(16) := '';
raw_input RAW(128) := UTL_RAW.CAST_TO_RAW(CONVERT(input_string,'AL32UTF8','US7ASCII'));
key_string VARCHAR2(8) := 'AsDf!2#4';
raw_key RAW(128) := UTL_RAW.CAST_TO_RAW(CONVERT(key_string,'AL32UTF8','US7ASCII'));
encrypted_raw RAW(2048);
encrypted_string VARCHAR2(2048);
BEGIN
for cred_record in (select upper(CREDIT_CARD) as CREDIT_CARD,
CREDIT_CARD_EXP_DATE,
to_char(CREDIT_CARD_NUMBER) as CREDIT_CARD_NUMBER,
CUST_ID
from TE.temp_sales) loop
dbms_output.put_line('type:' || cred_record.credit_card || 'exp_date:' || cred_record.CREDIT_CARD_EXP_DATE);
dbms_output.put_line('number:' || cred_record.CREDIT_CARD_NUMBER);
input_string := cred_record.CREDIT_CARD_NUMBER;
raw_input := UTL_RAW.CAST_TO_RAW(CONVERT(input_string,'AL32UTF8','US7ASCII'));
dbms_output.put_line('> Input String: ' || CONVERT(UTL_RAW.CAST_TO_VARCHAR2(raw_input),'US7ASCII','AL32UTF8'));
encrypted_raw := dbms_crypto.Encrypt(
src => raw_input,
typ => DBMS_CRYPTO.DES_CBC_PKCS5,
key => raw_key);
encrypted_string := rawtohex(UTL_RAW.CAST_TO_RAW(encrypted_raw)) ;
dbms_output.put_line('> Encrypted hex value : ' || encrypted_string );
insert into TE.customer_credit_info values
(TE.customers_cred_info_id.nextval,
cred_record.credit_card,
encrypted_raw,
cred_record.CREDIT_CARD_EXP_DATE,
cred_record.CUST_ID);
end loop;
commit;
end;
4. Check credit card number script
DECLARE
input_string VARCHAR2(16) := '';
raw_input RAW(128) := UTL_RAW.CAST_TO_RAW(CONVERT(input_string,'AL32UTF8','US7ASCII'));
key_string VARCHAR2(8) := 'AsDf!2#4';
raw_key RAW(128) := UTL_RAW.CAST_TO_RAW(CONVERT(key_string,'AL32UTF8','US7ASCII'));
encrypted_raw RAW(2048);
encrypted_string VARCHAR2(2048);
decrypted_raw RAW(2048);
decrypted_string VARCHAR2(2048);
cursor cursor_cust_cred is select CUST_CREDIT_ID, CARD_TYPE, CARD_NUMBER, EXPIRY_DATE, CUST_ID
from TE.customer_credit_info order by CUST_CREDIT_ID;
v_id customer_credit_info.CUST_CREDIT_ID%type;
v_type customer_credit_info.CARD_TYPE%type;
v_EXPIRY_DATE customer_credit_info.EXPIRY_DATE%type;
v_CUST_ID customer_credit_info.CUST_ID%type;
BEGIN
dbms_output.put_line('ID Type Number Expiry_date cust_id');
dbms_output.put_line('-----------------------------------------------------');
open cursor_cust_cred;
loop
fetch cursor_cust_cred into v_id, v_type, encrypted_raw, v_expiry_date, v_cust_id;
exit when cursor_cust_cred%notfound;
decrypted_raw := dbms_crypto.Decrypt(
src => encrypted_raw,
typ => DBMS_CRYPTO.DES_CBC_PKCS5,
key => raw_key);
decrypted_string := CONVERT(UTL_RAW.CAST_TO_VARCHAR2(decrypted_raw),'US7ASCII','AL32UTF8');
dbms_output.put_line(V_ID ||' ' ||
V_TYPE ||' ' ||
decrypted_string || ' ' ||
v_EXPIRY_DATE || ' ' ||
v_CUST_ID);
end loop;
close cursor_cust_cred;
commit;
end;
/ -
Is it possible to have 2 tables with the same name in an Orable database?
Hello,
I'm a complete Oracle newbie so please excuse my question if it's stupid.
I was trying to create 2 tables with the same name using different tablespaces but it does not seem to work. Like this (second time just change the name of the tablespace):
CREATE TABLE test_tbl (
id INTEGER,
status VARCHAR2(10),
last_modified DATE DEFAULT SYSDATE
TABLESPACE tblspc1Is it in general in Oracle possible to acquire this goal?
Thanks a lot!
P.S. I have already created the needed tablespaces
CREATE TABLESPACE tblspc1 DATAFILE 'tblspc1.dbf' SIZE 10MEdited by: 808239 on 02-Mar-2011 02:18It is not possible to create two tables with same name in same schema.
A user can own one schema with his own name and another with the schema name SYS.
For this you have to grant sysdba privilage to the user and then have to connect using sys password or with the password specified in password file.
But this still you have to access to the table in sys schema using sys.table_name.
Hope Answered tthe Question.
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