ORA error-40501 impossible Record of reserve for the update or delete.

I'm testing a new program and get ORA-40501 error-could not reserve Record to update or Delete.
The database prevents users both a motion trigger and a ' clause ' a query data source, type a»»
the block property. The query itself works fine, I get the error only when I leave the field that I am trying to update.
I don't know if this is related, but on a multi byte field, touch I new characters are all displayed one after the other
in the same byte 1 of the form.
Update/deletion is not appropriate when you use a prior query?
I normally don't use queries before, but in this particular program, records that I selected are based on several cursors
as well as some parameters entered in a previous block, and that's the only way I could think to do. I guess
It was not a way to use the query data Source Type = Table and be able to make the selection of records I need.
Thank you
Sandy

Since you use "clause of" query as a data source, you will need to manage the insertion, update, lock and delete operations on this datablock. If you need to implement on Insertion, on-Update, on-Lock and the removal of the triggers for that to happen.

I don't know the query that you put in the data source contains a single table or multiple tables. If you have a single table so better to use as a name of the source table and the data table as the data source name. If it contains more than one table, then you must handle transactions on-... Triggers.

If you don't want to do all the DML operations on this block then.

In the trigger lock, simply add NULL;

I hope this helps.

Kind regards
Annick...

Tags: Oracle Development

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