I am currently experiencing similar problems with Oracle 8.1.6.
The problem does not occur with in Oracle9. Never tried with 8.1.7...
(I am using hibernate 2.1 and ojdbc14.jar - thin mode)
I notice that writing into fields of type DATE in Oracle 8.1.6
leads to the introduction of very strange chars in other columns...
When commenting the date column in the mapping file, the insert is OK.
I tried without success to force the type (e.g: <column type="x" where x = date, timestamp, java.util.Date, java.sql.Date, java.sql.Timestamp, etc...) of my date column in the mapping file, but it does not work
with any of the type listed above :-(
Probably a bug in Oracle 8.1.6...
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