Error messages in Oracle can seem like nagging roadblocks, but some are truly designed and signaled to aid in the efficiency of the database. While this may seem counterintuitive, if the program simply allowed the user to have free reign in making mistakes, Oracle would not be the dynamic and streamlined database software that it is known as. The ORA error message is indicative of this pattern of thinking. The ORA message is triggered when a unique constraint has been violated.
The error can commonly be found when a program attempts to insert a duplicate row in a table. Before we progress to resolving the issue, it would be ideal to have some more information about the error. If you are unsure as to which constraint was violated to trigger the ORA, there is an SQL statement that you can run to find out more about it.
In parenthesis following the ORA notice, the constraint should be listed. This process will then return the name of the table that features the violated constraint.
I checked and on our Pretty ugly. Islam 26 March - pm. Suppose that the user entered 10 payments and 2 of them only are duplicated, then the 10 payments are rolled back, which will make the user complain where are my work about the correct 8 payments. Jeffrey Kemp 26 March - pm. If we commit the 8 payment links but miss 2 of them, you would introduce a data integrity issue. Save my name, email, and website in this browser for the next time I comment. We had only a few options: Make the constraint deferrable Remove the unique constraint Option 2 was not very palatable, because the constraint provides excellent protection from nasty application bugs that might allow inconsistent data to be saved.
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Viewed k times. Note: With Hibernate 5. UniqueConstraint made it appear. Could be a bug. Add a comment. Active Oldest Votes. From the example you gave, there is a huge difference between both. Once the unique constraint is created am I able to reference the constraint by name in my JPA Repository to query on that?
You can query the mask and group columns, in one query, and it will use that index for faster processing if you are lucky , but you cannot simply query an index.
Beware though that columnNames must be actual names in the database.
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