Cannot disable constraint error

Hi - this might be a bit of a noob question but here goes. I have a table with a constraint (called FK_Category_Product) that I want to disable. When I run this statement the constraint is returned in the results:
SELECT owner,constraint_name, constraint_type, table_name, status
FROM user_constraints
WHERE constraint_type = 'R'However when I run this statement:
alter table T_PRODUCT disable constraint FK_Category_ProductI get this error:
SQL Error: ORA-02431: cannot disable constraint (FK_CATEGORY_PRODUCT) - no such constraintAnyone got any ideas?
Edited by: user9507427 on Mar 17, 2013 5:08 PM

Ok thanks - I'm guessing it's something to do with the schema / owner. Here's my version ( running on Windows Server 2008 R2):
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit ProductionWhen I run this query:
SELECT owner,constraint_name, constraint_type, table_name, status
FROM user_constraints
WHERE table_name='T_PRODUCT'I get these results:
OWNER                          CONSTRAINT_NAME                CONSTRAINT_TYPE TABLE_NAME                     STATUS
PRODOWNER                       FK_Product_SourceSpecies       R               T_PRODUCT                      ENABLED
PRODOWNER                       FK_Product_CreatePerson        R               T_PRODUCT                      ENABLED
PRODOWNER                       FK_Product_ModifyPerson        R               T_PRODUCT                      ENABLED
PRODOWNER                       FK_Product_ExpressionSystem    R               T_PRODUCT                      ENABLED
PRODOWNER                       FK_Product_Localisation        R               T_PRODUCT                      ENABLED
PRODOWNER                       FK_Batch_Products              R               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908459                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908460                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908461                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908462                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908463                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908464                  C               T_PRODUCT                      ENABLED
PRODOWNER                       SYS_C00908465                  P               T_PRODUCT                      ENABLED Then when I run this statement (as PRODOWNER):
alter table T_PRODUCT disable constraint FK_Product_SourceSpeciesI get this result:
Error starting at line 3 in command:
alter table T_PRODUCT disable constraint FK_Product_SourceSpecies
Error report:
SQL Error: ORA-02431: cannot disable constraint (FK_PRODUCT_SOURCESPECIES) - no such constraint
02431. 00000 - "cannot disable constraint (%s) - no such constraint"
*Cause:    the named constraint does not exist for this table.
*Action:   ObviousI tried the above with and without single quotes around the constraint name, same result but slightly different error message with single quotes

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Here is my issue:
I have created a table already named practice1.
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Your question has NOTHING to do with sql developer.
Mark this question ANSWERED and repost it in the SQL and PL/SQL forum.
https://forums.oracle.com/community/developer/english/oracle_database/sql_and_pl_sql
The problem is that you CANNOT execute DDL directly in PL/SQL. You need to use dynamic SQL to execute DDL within PL/SQL.
EXECUTE IMMEDIATE 'ALTER TABLE . . .';
If you need more help use the correct forum as shown above.

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rsar001 wrote:
but isn't the unique index constraint part of the disabled constraints on the table as shown above?Not if index used by PK was created separately prior to PK:
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Table altered.
SQL> insert into emp1 select * from emp;
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ERROR at line 1:
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SQL> But by dropping index you are simply delaying the issue. Yes, you will be able to insert, but what's then? You will not be able to recreate PK - same violation error will be raised.
SY.

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     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:629)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:376)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:870)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
     at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:218)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:119)
     at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:230)
     at oracle.oc4j.network.ServerSocketAcceptHandler.access$800(ServerSocketAcceptHandler.java:33)
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     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)

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[06/Mar/2009:11:59:11 -0500] - WARNING<12364> - Connection - conn=-1 op=-1 msgId=-1 - Configuration warning Cannot disable TCP/IP nagle algorithm: error -5962 (The value requested is too large to be stored in the data buffer provided.). Check your system.
[06/Mar/2009:11:59:13 -0500] - WARNING<12364> - Connection - conn=-1 op=-1 msgId=-1 - Configuration warning Cannot disable TCP/IP nagle algorithm: error -5962 (The value requested is too large to be stored in the data buffer provided.). Check your system.
[06/Mar/2009:11:59:15 -0500] - WARNING<12364> - Connection - conn=-1 op=-1 msgId=-1 - Configuration warning Cannot disable TCP/IP nagle algorithm: error -5962 (The value requested is too large to be stored in the data buffer provided.). Check your system.
Is this something I must be aware??
Where do I disable this option within the DS ?
What action should i take ??
Why this messages appear?
Any help will be appreciate it.

I edited dse.ldif and added the option to turn nsslapd-nagle to "off" but it disappeared out of the config.Did you edit dse.ldif while the DS instance was running? That's not recommended as dse.ldif is read only once at startup and then frequently written out. Your choices are:
- Stop instance, edit dse.ldif and start instance
- modify cn=config on the fly.
Most importantly, check if it's possible for your load balancer to do LDAP health checks as opposed to TCP level health check. If it's LDAP level, then the load balancer will bind, do a search of some sort and unbind. TCP level checks just verify if a connection can be established (from LB to DS) and by the time DS tries to set some extra parameters on the connection, the load balancer has dropped lost interest. Editing nsslapd-nagle will only hide the problem, not solve it.
Edited by: etst123 on Mar 17, 2009 4:15 PM
(edited sentence about dse.ldif)

Constraint errors during apply on destination site

We are trying to acheive replication between two sites. we have about 100+ tables with parent child relationships with one key being present in almost all the tables.
The same database schema is installed on both the m/c.
When i execute a transaction on the first m/c that covers about 50-60 tables, it reaches the apply of the second and gives "constraint errors" for many tables. However, some tables having a similar structure go thru, but the transaction does not commit.
To make it proceed,i used to disable the constraint after every reported constraint. This way, i could go far ahead (just to check), but got stuck in a "No data found" error.
I do not have any DML handlers installed.
The question is that if both the sites have identical schemas with same constraints, if the transaction could go thru fully on the first, why does it give constraint errors at the second.
We have tried all these on a single/two table scenario and everything worked like a charm.
It could be some mistake on my part, but could someone give me any pointers where to look.

It would be helpful to know what kind of constraint failures you are getting.
When dealing with foreign key constraints, be sure to make them deferrable constraints. At the apply site, the ordering is by transaction so individual LCRs within a transaction are not guaranteed to be performed in the same order as at the source site.
Check your supplemental logging to ensure that you are logging the appropriate columns.

Cannot disable constraint error

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