Lock while inserting/updating database in multithreaded.

Lock while inserting/updating database in multithreaded.

Hi,

I am having a multithreaded process which replicates the data from many table to one table. My process runs on 4 threads and all are having different connection sessions. I am also handling transaction in such a way that I commit at the end of each transaction and rollback at the time of error. After each transaction I give back the connection to connection pool for re-use.

My problem is, from past 1month, I am facing one issue which is like: One of my thread get struct while inserting/updating to database. I dont know what is the issue but it was never coming for me for last 6 months but from past 1month, it is coming again n again. Above all there are no logs also in .ora of SQL. I rebuild all my indexes, updated my sequence cache but still problem exists.

I changed my process to run for 1 thread also, but still problem is coming. I dont know what is the issue and also I am not finding any proper answer. This problem is not coming at development site but its coming at deployment site only. I verified all database indexes. I am using ojdbc5.jar for jdbc connection.

Please help me out, its killing me. Thanks in advance.

Dhiraj.

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