ExecuteBatch method return array of value -2 in java

Question

When I am executing executeBatch method in java, its returning an int array that\'s fine but the value is -2 of all array elements,

it should be 0 or +ve number that

Answer 1

Note that since Oracle 12c this shouldn't be the case anymore:

For a prepared statement batch, the array contains the actual update counts indicating the number of rows affected by each operation.

See https://docs.oracle.com/database/121/JJDBC/oraperf.htm#JJDBC28773