Hello Phạm Quang,
Thank you for contacting us.
Based on the provided information, I guess that you are using a procedure that somehow fires queries in your database that lead to a heavy usage of cursors in the system. According to this link
, you can increase the number of allowed open cursors in your database. Though leading to more memory consumption for the database.
Additionally, I would check what the procedure actually does. Are there some resources that are not freed correctly while executing the procedure? Any recursive calls?
I hope this information is helpful for you.
Do come back in case you have any other question
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