Transaction Locking Problem in JDBC with ResultSet : ORA-17090.

Question

I have a locking concern using JDBC. I select a set of records to determine if they
need to to be updated by a set of generated results (from else where in the program).
If the results are not in this cursored set of records selected they are to be INSERTED
else they (if they are in the select set) they are to be UPDATED.
I set up a ResultSet using concurrancy parameters so that I can scroll through them for
each of the program results to check. If I set up the ResultSet with TYPE_SCROLL_INSENSITIVE,
CONCUR_UPDATABLE, I get a possible race condition if I am accessing teh same records
through some other program such as toad. As such the first record is not checked (if my
cursor in toad is on this first record) and as such is duplicated.
If I set up the ResultSet with TYPE_SCROLL_SENSITIVE, CONCUR_READ_ONLY. This fixes this
concurrancy problem but occassionally I get the following error which is Oracle based and
not documented:
java.sql.SQLException: operation not allowed: Unsupported syntax for refreshRow()
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:251) at
oracle.jdbc.driver.SensitiveScrollableResultSet.refreshRow(SensitiveScrollableResultSet.java:171)
at oracle.jdbc.driver.SensitiveScrollableResultSet.handle_refetch(SensitiveScrollableResultSet.java:239)
at oracle.jdbc.driver.SensitiveScrollableResultSet.next(SensitiveScrollableResultSet.java:83)
at sfwmd.hisa.oneflow.TimeSeries.load(TimeSeries.java:2502)
at sfwmd.hisa.oneflow.OneParameter.main(OneParameter.java:808)
which translates to an ORA-17090 (operation not allowed)
{NOTE: I do NOT call ResultSet.refreshRow() anywhere in my program}
I do not see any methods in ResultSet for record locking, outside of the mentioned parameters
in the constructor. The database (updates and inserts) changes are all batched and executed
AFTER this ResultSet is released.
-James Fox
[email protected]

Answer 1

post ur code..