No Primary Key Column set. error

Hi all,
Firstly, thank you to DWFAQ for advice a tutorials.
Secondly, I have built a contact form using the update record
form wizard in ADDT -
http://dwfaq.info/home.php?id=4
I have hit a problem, when running the form I get the
following error:
Error:
Internal error.
Developer Details:
tNG_update.prepareSQL:
No Primary Key Column was set. (UPD_NO_PK_SET)
tNG Execution Trace - VIEW
* tNG_update.executeTransaction
o STARTER.Trigger_Default_Starter
o tNG_update.doTransaction
+ BEFORE.Trigger_Default_saveData
# tNG_update.saveData
+ BEFORE.Trigger_Default_FormValidation
+ tNG_update.prepareSQL*
o tNG_update.getRecordset
o tNG_update.getFakeRsArr
o tNG_update.getLocalRecordset
o tNG_update.getFakeRecordset
Could somebody please help - I'm so close it hurts ;-)
Thank you
NJ

Heya,
Looks like your DB is all setup correctly it must be the
primary key in the transaction of the script.
Make sure id is set as the primary key in your Update Record
Form Wizard. You php code should look something like this:
// Add columns
$upd_contact->setTable("cvform");
$upd_contact->addColumn("firstname", "STRING_TYPE",
"POST", "firstname");
$upd_contact->addColumn("lastname", "STRING_TYPE", "POST",
"lastname");
$upd_contact->addColumn("email", "STRING_TYPE", "POST",
"email");
$upd_contact->addColumn("message", "STRING_TYPE", "POST",
"message");
$upd_contact->addColumn("attachment", "FILE_TYPE",
"FILES", "attachment");
$upd_contact->addColumn("phonenumber", "STRING_TYPE",
"POST", "phonenumber");
$upd_contact->setPrimaryKey("id", "NUMERIC_TYPE", "VALUE",
"id");
// Execute all the registered transactions
$tNGs->executeTransactions();
You may have to post your script to see what the problem is.
Most likely something not followed correctly in the tutorial. If
you are able to post your php script as a text file then link to
the file here with .txt extension I can take a look at it and see
where the problem is. Make sure to remove any info that may
compromise your database when providing your php script or contact
me through my website and I can help you out off the forum.
Hope that helps!

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    With the Partitioning, OLAP and Data Mining options
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    [TopLink Config]: 2008.01.09 07:36:02.203--ServerSession(1968077)--Connection(5542993)--Thread(Thread[Main Thread,5,main])--connecting(DatabaseLogin(
         platform=>OraclePlatform
         user name=> "rms"
         datasource URL=> "jdbc:oracle:thin:@//10.20.6.126:1521/region2"
    [TopLink Config]: 2008.01.09 07:36:02.281--ServerSession(1968077)--Connection(5545904)--Thread(Thread[Main Thread,5,main])--Connected: jdbc:oracle:thin:@//10.20.6.126:1521/region2
         User: RMS
         Database: Oracle  Version: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
    With the Partitioning, OLAP and Data Mining options
         Driver: Oracle JDBC driver  Version: 10.2.0.1.0
    [TopLink Finest]: 2008.01.09 07:36:02.312--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--sequencing connected, state is Preallocation_NoTransaction_State
    [TopLink Info]: 2008.01.09 07:36:02.484--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--file:/D:/dev/bull/jpa_pk_bug/bin/-Test login successful
    [TopLink Finest]: 2008.01.09 07:36:02.484--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--end deploying Persistence Unit Test; state Deployed; factoryCount 1
    [TopLink Finer]: 2008.01.09 07:36:02.516--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--client acquired
    [TopLink Finest]: 2008.01.09 07:36:02.531--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Execute query DoesExistQuery()
    [TopLink Finest]: 2008.01.09 07:36:02.547--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--PERSIST operation called on: test.jpa.entities.Person@563c8c.
    [TopLink Finest]: 2008.01.09 07:36:02.562--ClientSession(5666151)--Thread(Thread[Main Thread,5,main])--Execute query ValueReadQuery()
    [TopLink Fine]: 2008.01.09 07:36:02.594--ServerSession(1968077)--Connection(5747801)--Thread(Thread[Main Thread,5,main])--SELECT PERSONS_ID_SEQ.NEXTVAL FROM DUAL
    [TopLink Finest]: 2008.01.09 07:36:03.297--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--sequencing preallocation for PERSONS_ID_SEQ: objects: 1 , first: 5, last: 5
    [TopLink Finest]: 2008.01.09 07:36:03.312--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--assign sequence to the object (5 -> test.jpa.entities.Person@563c8c)
    [TopLink Finest]: 2008.01.09 07:36:03.328--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Execute query ReadObjectQuery(test.jpa.entities.Person)
    [TopLink Fine]: 2008.01.09 07:36:03.438--ServerSession(1968077)--Connection(4252099)--Thread(Thread[Main Thread,5,main])--SELECT ID, NAME, MGR_ID FROM Persons WHERE (ID = ?)
         bind => [1]
    [TopLink Finest]: 2008.01.09 07:36:03.531--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Register the existing object test.jpa.entities.Person@3a4484
    [TopLink Finer]: 2008.01.09 07:36:03.625--ClientSession(5666151)--Connection(5763284)--Thread(Thread[Main Thread,5,main])--begin transaction
    [TopLink Finest]: 2008.01.09 07:36:03.625--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Execute query UpdateObjectQuery(test.jpa.entities.Person@3a57fa)
    [TopLink Finest]: 2008.01.09 07:36:03.641--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Execute query WriteObjectQuery(test.jpa.entities.Person@563c8c)
    [TopLink Fine]: 2008.01.09 07:36:03.656--ClientSession(5666151)--Connection(5763284)--Thread(Thread[Main Thread,5,main])--INSERT INTO Persons (ID, NAME, MGR_ID) VALUES (?, ?, ?)
         bind => [5, Boss, null]
    [TopLink Fine]: 2008.01.09 07:36:03.688--ClientSession(5666151)--Connection(5763284)--Thread(Thread[Main Thread,5,main])--UPDATE Persons SET MGR_ID = ? WHERE (ID = ?)
         bind => [5, 1]
    [TopLink Finer]: 2008.01.09 07:36:03.703--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--begin unit of work commit
    [TopLink Finest]: 2008.01.09 07:36:03.703--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Execute query UpdateObjectQuery(test.jpa.entities.Person@563c8c)
    [TopLink Warning]: 2008.01.09 07:36:03.812--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--Local Exception Stack:
    Exception [TOPLINK-7251] (Oracle TopLink Essentials - 2.0 (Build b58g-fcs (09/07/2007))): oracle.toplink.essentials.exceptions.ValidationException
    Exception Description: The attribute [id] of class [test.jpa.entities.Person] is mapped to a primary key column in the database. Updates are not allowed.
         at oracle.toplink.essentials.exceptions.ValidationException.primaryKeyUpdateDisallowed(ValidationException.java:2222)
         at oracle.toplink.essentials.mappings.foundation.AbstractDirectMapping.writeFromObjectIntoRowWithChangeRecord(AbstractDirectMapping.java:750)
         at oracle.toplink.essentials.internal.descriptors.ObjectBuilder.buildRowForUpdateWithChangeSet(ObjectBuilder.java:948)
         at oracle.toplink.essentials.internal.queryframework.DatabaseQueryMechanism.updateObjectForWriteWithChangeSet(DatabaseQueryMechanism.java:1263)
         at oracle.toplink.essentials.queryframework.UpdateObjectQuery.executeCommitWithChangeSet(UpdateObjectQuery.java:91)
         at oracle.toplink.essentials.internal.queryframework.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:390)
         at oracle.toplink.essentials.queryframework.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:109)
         at oracle.toplink.essentials.queryframework.DatabaseQuery.execute(DatabaseQuery.java:628)
         at oracle.toplink.essentials.queryframework.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:555)
         at oracle.toplink.essentials.queryframework.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:138)
         at oracle.toplink.essentials.queryframework.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:110)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2233)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:952)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:909)
         at oracle.toplink.essentials.internal.sessions.CommitManager.commitChangedObjectsForClassWithChangeSet(CommitManager.java:309)
         at oracle.toplink.essentials.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:195)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:2657)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1044)
         at oracle.toplink.essentials.internal.ejb.cmp3.base.RepeatableWriteUnitOfWork.commitToDatabase(RepeatableWriteUnitOfWork.java:403)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1126)
         at oracle.toplink.essentials.internal.ejb.cmp3.base.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:107)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:856)
         at oracle.toplink.essentials.internal.ejb.cmp3.transaction.base.EntityTransactionImpl.commit(EntityTransactionImpl.java:102)
         at oracle.toplink.essentials.internal.ejb.cmp3.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:60)
         at test.jpa.TestPkBug.runTest(TestPkBug.java:53)
         at test.jpa.TestPkBug.main(TestPkBug.java:95)
    [TopLink Finer]: 2008.01.09 07:36:03.828--ClientSession(5666151)--Connection(5763284)--Thread(Thread[Main Thread,5,main])--rollback transaction
    [TopLink Finer]: 2008.01.09 07:36:03.844--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--release unit of work
    [TopLink Finer]: 2008.01.09 07:36:03.844--UnitOfWork(5663897)--Thread(Thread[Main Thread,5,main])--initialize identitymaps
    [TopLink Finer]: 2008.01.09 07:36:03.844--ClientSession(5666151)--Thread(Thread[Main Thread,5,main])--client released
    [TopLink Finest]: 2008.01.09 07:36:03.844--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--begin undeploying Persistence Unit Test; state Deployed; factoryCount 1
    [TopLink Finest]: 2008.01.09 07:36:03.844--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--sequencing disconnected
    [TopLink Config]: 2008.01.09 07:36:03.844--ServerSession(1968077)--Connection(4252099)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Finer]: 2008.01.09 07:36:03.859--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--initialize identitymaps
    [TopLink Info]: 2008.01.09 07:36:03.859--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--file:/D:/dev/bull/jpa_pk_bug/bin/-Test logout successful
    [TopLink Config]: 2008.01.09 07:36:03.859--ServerSession(1968077)--Connection(5747801)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.859--ServerSession(1968077)--Connection(5182312)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.859--ServerSession(1968077)--Connection(5500006)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.875--ServerSession(1968077)--Connection(5514977)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.875--ServerSession(1968077)--Connection(5530440)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.875--ServerSession(1968077)--Connection(5545904)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Config]: 2008.01.09 07:36:03.891--ServerSession(1968077)--Connection(5763284)--Thread(Thread[Main Thread,5,main])--disconnect
    [TopLink Finest]: 2008.01.09 07:36:03.891--ServerSession(1968077)--Thread(Thread[Main Thread,5,main])--end undeploying Persistence Unit Test; state Undeployed; factoryCount 0
    Exception in thread "Main Thread" javax.persistence.RollbackException: Exception [TOPLINK-7251] (Oracle TopLink Essentials - 2.0 (Build b58g-fcs (09/07/2007))): oracle.toplink.essentials.exceptions.ValidationException
    Exception Description: The attribute [id] of class [test.jpa.entities.Person] is mapped to a primary key column in the database. Updates are not allowed.
         at oracle.toplink.essentials.internal.ejb.cmp3.transaction.base.EntityTransactionImpl.commit(EntityTransactionImpl.java:120)
         at oracle.toplink.essentials.internal.ejb.cmp3.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:60)
         at test.jpa.TestPkBug.runTest(TestPkBug.java:53)
         at test.jpa.TestPkBug.main(TestPkBug.java:95)
    Caused by: Exception [TOPLINK-7251] (Oracle TopLink Essentials - 2.0 (Build b58g-fcs (09/07/2007))): oracle.toplink.essentials.exceptions.ValidationException
    Exception Description: The attribute [id] of class [test.jpa.entities.Person] is mapped to a primary key column in the database. Updates are not allowed.
         at oracle.toplink.essentials.exceptions.ValidationException.primaryKeyUpdateDisallowed(ValidationException.java:2222)
         at oracle.toplink.essentials.mappings.foundation.AbstractDirectMapping.writeFromObjectIntoRowWithChangeRecord(AbstractDirectMapping.java:750)
         at oracle.toplink.essentials.internal.descriptors.ObjectBuilder.buildRowForUpdateWithChangeSet(ObjectBuilder.java:948)
         at oracle.toplink.essentials.internal.queryframework.DatabaseQueryMechanism.updateObjectForWriteWithChangeSet(DatabaseQueryMechanism.java:1263)
         at oracle.toplink.essentials.queryframework.UpdateObjectQuery.executeCommitWithChangeSet(UpdateObjectQuery.java:91)
         at oracle.toplink.essentials.internal.queryframework.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:390)
         at oracle.toplink.essentials.queryframework.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:109)
         at oracle.toplink.essentials.queryframework.DatabaseQuery.execute(DatabaseQuery.java:628)
         at oracle.toplink.essentials.queryframework.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:555)
         at oracle.toplink.essentials.queryframework.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:138)
         at oracle.toplink.essentials.queryframework.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:110)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2233)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:952)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:909)
         at oracle.toplink.essentials.internal.sessions.CommitManager.commitChangedObjectsForClassWithChangeSet(CommitManager.java:309)
         at oracle.toplink.essentials.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:195)
         at oracle.toplink.essentials.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:2657)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1044)
         at oracle.toplink.essentials.internal.ejb.cmp3.base.RepeatableWriteUnitOfWork.commitToDatabase(RepeatableWriteUnitOfWork.java:403)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1126)
         at oracle.toplink.essentials.internal.ejb.cmp3.base.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:107)
         at oracle.toplink.essentials.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:856)
         at oracle.toplink.essentials.internal.ejb.cmp3.transaction.base.EntityTransactionImpl.commit(EntityTransactionImpl.java:102)
         ... 3 moreEDIT: Are you using the EXACT Test Case as I have described it in the previous posts? It's important that you commit(), and not rollback(), the transaction after the flush.
    EDIT: Updated the log because I found out that I had made a small change to the original Test Case while I was trying to find a workaround. The current log is produced by the EXACT Test Case I described in my previous posts.
    Message was edited by:
    bisser

  • How to update primary key column

    Hi,
    Can you suggest me best workaround/algorithm for below task:
    (Oracle 10g, Solaris OS.)
    Situation:
    Table P has primary key column "Code", child tables F1, F2, ..., F15 reference with foreign key column "P_Code" column "P.Code", and we don't know which of the child tables has data for particular "P.Code" value.
    Task:
    Change "P.Code" value from 100 to 200. So that result would be that record P[Code = 100] should be updated as:
    update P set
    Code = 200
    where Code = 100;And child tables column "P_Code" should be updated as:
    update F1, F2, .., F15 set
    P_code = 200
    where P_code = 100;The best solution would be that one very easily can repeat that task.
    Edited by: CharlesRoos on 28.12.2010 12:10

    If you are looking for reusable and repetitive solution, then may be...
    SQL> CREATE TABLE p (p_code NUMBER PRIMARY KEY);
    Table created.
    SQL> INSERT INTO p VALUES(100);
    1 row created.
    SQL> INSERT INTO p VALUES(300);
    1 row created.
    SQL> INSERT INTO p VALUES(500);
    1 row created.
    SQL> commit;
    Commit complete.
    SQL> CREATE TABLE F1 (p_code NUMBER REFERENCES p(p_code));
    Table created.
    SQL> CREATE TABLE F2 (p_code NUMBER REFERENCES p(p_code));
    Table created.
    SQL> CREATE TABLE F3 (p_code NUMBER REFERENCES p(p_code));
    Table created.
    SQL> INSERT INTO F1 VALUES(100);
    1 row created.
    SQL> INSERT INTO F3 VALUES(100);
    1 row created.
    SQL> INSERT INTO F2 VALUES(500);
    1 row created.
    SQL> commit;
    Commit complete.
    SQL> CREATE OR REPLACE PROCEDURE update_child_parent(pi_p_code_old NUMBER,
      2                                                  pi_p_code_new NUMBER) IS
      3    CURSOR table_to_update IS
      4      SELECT table_name,
      5             to_number(extractvalue(xmltype(DBMS_XMLGEN.getxml('SELECT count(*) c FROM ' ||
      6                                                               table_name ||
      7                                                               ' WHERE p_code=' ||
      8                                                               pi_p_code_old)),
      9                                    '/ROWSET/ROW/C')) cnt
    10        FROM user_tables
    11       WHERE table_name IN ('F1', 'F2', 'F3');
    12 
    13  BEGIN
    14    EXECUTE IMMEDIATE 'ALTER TABLE p DISABLE PRIMARY KEY CASCADE';
    15    UPDATE p SET p_code = pi_p_code_new WHERE p_code = pi_p_code_old;
    16    FOR i IN table_to_update LOOP
    17      IF i.cnt > 0 THEN
    18        EXECUTE IMMEDIATE 'UPDATE ' || i.table_name || ' SET p_code=' ||
    19                          pi_p_code_new || ' WHERE p_code=' || pi_p_code_old;
    20      END IF;
    21    END LOOP;
    22    EXECUTE IMMEDIATE 'ALTER TABLE p ENABLE VALIDATE PRIMARY KEY';
    23  END update_child_parent;
    24  /
    Procedure created.
    SQL> EXECUTE update_child_parent(100,200);
    PL/SQL procedure successfully completed.
    SQL> SELECT * FROM p;
        P_CODE
           200
           300
           500
    SQL> SELECT * FROM F1;
        P_CODE
           200
    SQL> SELECT * FROM F2;
        P_CODE
           500
    SQL> SELECT * FROM F3;
        P_CODE
           200
    SQL> INSERT INTO p VALUES(300);
    INSERT INTO p VALUES(300)
    ERROR at line 1:
    ORA-00001: unique constraint (HR.SYS_C005931) violated
    SQL> EXECUTE update_child_parent(500,900);
    PL/SQL procedure successfully completed.
    SQL> SELECT * FROM p;
        P_CODE
           200
           300
           900
    SQL>  SELECT * FROM F2;
        P_CODE
           900
    SQL>

  • No primary key column???

    Hello,
    I'm attempting to create an update form that connects to a mysql database. It pulls the information correctly, but it will not update...every time I hit update I get the following error(s):
    "No Primary Key Column was set. (UPD_NO_PK_SET)"
    ...for this error, I (and several others) tried messing with the update transaction...but nothing we tried worked. The primary key column appears to be set!
    The other error was:
    "# tNG_update.prepareSQL*
    * ERROR.Trigger_UpdatePassword_AddPassword
    * ERROR.Trigger_UpdatePassword_RemoveOldPassword"
    We'd like our users, once this project is finished, to be able to update not only their information, but their passwords as well. To begin, we manually assign their passwords.
    Uhh...other than that, I am currently using Developers Toolbox, Dreamweaver CS3, Windows XP, Dell computer.
    Any/all help is greatly appreciated.
    Thank you.

    Hi Rob,
    I'm attempting to create an update form that connects to a mysql database. It pulls the information correctly, but it will not update...every time I hit update I get the following error(s):
    "No Primary Key Column was set. (UPD_NO_PK_SET)"
    ...for this error, I (and several others) tried messing with the update transaction...but nothing we tried worked. The primary key column appears to be set!
    could you please post the update page´s code on your server (as .txt file) and provide a link to this file ?
    We'd like our users, once this project is finished, to be able to update not only their information, but their passwords as well. To begin, we manually assign their passwords
    I´m sure my tutorial "Protecting your application: Update my Account" can point you in the right direction: http://www.guenter-schenk.com/tutorials/tutorial.php?id=8
    Cheers,
    Günter Schenk
    Adobe Community Expert, Dreamweaver

  • FillSchema picks too many primary key columns

    I don't know whether this is an ODP.NET error or a Microsoft error.
    Oracle9i Release 9.2.0.1.0
    ODP.NET 9.2.0.4
    .NET Framework 1.1
    Create a table with one primary key column and one unique column and name the primary key column like the unique column with the suffix "_ID":
    CREATE TABLE t_bib_uebertrag_kap(
    &nbsp kapazitaet_id NUMBER(8) NOT NULL
    &nbsp&nbsp CONSTRAINT pk_kapa primary key,
    &nbsp kapazitaet VARCHAR2(15) NOT NULL
    &nbsp&nbsp CONSTRAINT a_un_kapa unique,
    &nbsp geschwindigkeit NUMBER(12) NOT NULL,
    &nbsp bemerkung VARCHAR2(255)
    After calling FillSchema on this table the PrimaryKey property of the DataTable contains 2 columns: KAPAZITAET_ID and KAPAZITAET.
    The same happens with other tables and similar column names
    R. Lüthke

    Tony, I'm gonna find time to try this because I was thinking it probably would be a double check.
    BUT... Oracle is written in C, and I imagine the extra check as a simple if comparison for the new value versus a constant NULL value. Kind of like checking for end of string. It's already doing things like checking datatypes and that as it inserts data, and I don't think this additional check (if it even exists) would add any significant overhead.
    But unless I find a much larger performance hit than I expect, I'm gonna stick with creating the NOT NULL's explicitly. Good data modelling trumps small performance tricks for me.
    My main worry is if/when somebody removes the primary key constraint (such as the example above where they might do a CREATE TABLE x AS SELECT * FROM y). Or if the data model gets updated to where the primary key becomes just a unique key, then the NOT NULL goes away when it shouldn't. I don't like basic table and column properties changing.
    Okay.. test done. Ran about 31,000 records from dba_tables through an insert into two tables, both with primary keys and one with explicit NOT NULLs. No measurable difference in stats detected.
    With NOT NULL and PRIMARY KEY:
    call count cpu elapsed disk query current rows
    Parse 1 0.35 0.35 0 0 0 0
    Execute 1 1.88 1.83 0 24792 35887 30954
    Fetch 0 0.00 0.00 0 0 0 0
    total 2 2.24 2.18 0 24792 35887 30954
    Now with only PRIMARY KEY.
    call count cpu elapsed disk query current rows
    Parse 1 0.37 0.36 0 0 0 0
    Execute 1 1.87 1.83 0 24792 35887 30954
    Fetch 0 0.00 0.00 0 0 0 0
    total 2 2.24 2.19 0 24792 35887 30954

  • Switch the sequence of Primary Key Columns

    Hi MaxDB experts,
    As part of our product upgrade we've made a schema change to 10 of our database tables. Typically these tables contain about 5 million rows in them. The change involves switching the order of columns in the primary key (original order SampleTime, Id; new order would be Id, SampleTime). What's the quickest way to achieve this?
    So far I've tried the following approaches without much luck:
    1. Use the "alter table alter primary key (new seuqence of columns)". Takes an average of 1 hour per table.
    2. Copy original table content into another table with "insert into newTable (select * from existingTable)" command. Takes the same amount of time as #1
    3. Tried using "Export Table" option presented by the "loadercli". Unfortunately, exported data can not be imported to a table with a different schema (in our case changed primary key column sequence).
    What else can we try? Any advise / direction would be greatly appreciated. Thanks for your time.
    Sincerely,
    Sameer Apte

    Hi there,
    ok, I assume that you figured out that you like to have data entries belonging to a specific ID stored rather nearby than scattered around in the table by TIMESTAMP or that you have more queries that specify the ID but not the TIMESTAMP.
    Both would be good reasons to perform such a change.
    Concerning the speed: basically things won't get any faster than ALTER TABLE or INSERT (SELECT * FROM)...
    The ALTER TABLE approach would have the advantage to be transactional atomic and simple to use.
    The INSERT approach would enable the use of the PREFETCHING feature for the read-I/O on the source table.
    So if you're just focussing on speed, then I'd recommend to:
    setup a data cache that can hold both source and target tables im memory
    enable prefetching by setting the parameter READAHEAD_TABLE_THRESHOLD to say 128 (be aware that you've to use MaxDB 7.6.05 or higher, but not 7.7.x  for that!)
    After you've copied each table, make sure to create the secondary indexes one by one since otherwise the internal parallelism won't be used.
    regards,
    Lars
    p.s.
    it is possible to export/import into different schemas - it's even supported via DB Studio.
    Anyhow, it wouldn't make anything quicker for this case.

  • Primary key column as the key of the cache

    Hi All,
    I am implementing a cache backed by HibernateCacheStore for a table. Cache contains key as the primary key of the table and value as the entire row in object format. the primary key is generated by hibernate.
    when i am inserting new rows through coherence (i.e cahce.put) what persistence strategy should is use to set the cache entries.
    I cannot use cache.put (key, value) because key is the primary key of the table which is not generated yet.
    and if i use the session.save(value) the persisted value is not in the cache.
    is there any mechanism to map the cache key as the primary key column of the table.
    Regards
    S

    Hi -
    Using Hibernate as a CacheStore for Coherence, the key of the cache entry is also the key of the entity
    being stored via Hibernate. For this reason keys for new cache entries must be generated ahead of time.
    A UUID can be used. The commons component of the Incubator project has a key generation utility that
    might be worth looking at.
    /Mark

  • How can I modify a column to a primary key column

    Hi,
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