Unable to write CLOB value larger then approx. 97KB

Question

Hello,
I am writing the CLOB value using the java JDBC bridge (9.0.1) to the DB (8.1.6). I managed to write CLOB values ok, but when I try to write text larger then 97KB it throws the following error:
java.io.IOException: ORA-00600: kód vnitønà chyby (internal error code in english), argumenty: [kdlseek-kgbtnscb], [], [], [], [], [], [], []
ORA-06512: na "SYS.DBMS_LOB", line 708
ORA-06512: na line 1
at oracle.jdbc.dbaccess.DBError.SQLToIOException(DBError.java:618)
at oracle.jdbc.driver.OracleClobWriter.flushBuffer(OracleClobWriter.java:201)
at oracle.jdbc.driver.OracleClobWriter.flush(OracleClobWriter.java:161)
at com.trask.edoceo.sql.OracleConnection$OraclePreparedStatement.getCLOB(OracleConnection.java:103)
at com.trask.edoceo.sql.OracleConnection$OraclePreparedStatement.setCharacterStream(OracleConnection.java:85)
at ...
I use the Prepared statement function setClob and for writing I create the CLOB object using the following method:
private CLOB getCLOB(String text, Connection conn) throws SQLException {
CLOB tempClob = null;
try {
// If the temporary CLOB has not yet been created, create new
tempClob = CLOB.createTemporary(conn, true, CLOB.DURATION_SESSION);
// Open the temporary CLOB in readwrite mode to enable writing
tempClob.open(CLOB.MODE_READWRITE);
                    // Get the output stream to write
Writer tempClobWriter = tempClob.getCharacterOutputStream();
// Write the data into the temporary CLOB
tempClobWriter.write(text);
// Flush and close the stream
tempClobWriter.flush();
tempClobWriter.close();
// Close the temporary CLOB
tempClob.close();
} catch (SQLException sqlexp) {
tempClob.freeTemporary();
sqlexp.printStackTrace();
} catch (Exception exp) {
tempClob.freeTemporary();
exp.printStackTrace();
return tempClob;
Under the 97KB boundary everything works fine. Is the limit hidden in the JDBC drivers (I tried the newer drivers, but they throw the END OF TNS DATA CHANNEL error) or somewhere in the oracle DB settings?
I am using JDK 1.3.1 Win2000 and the oracle DB resides on another machine then the application.
I tried to append the error dump from the DB, but it has 1.5MB of text :-(
Thanks for your help.
Jan Antos.
[email protected]

Answer 1

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