UpdateCharacterStream for LONG column gives SQLException: Data size bigger than max

Question

I have a LONG column and when I call updateCharacterStream via the resultset I get the following error:
SQLException: Data size bigger than max size for this type: 2391
I am trying to update the column with a value that is 2391 in length. The column is defined as a LONG so it is plenty big enough.
What gives?
If I use a UTF-8 database it works OK. But if I use a db that is on the default character set I get the error. There are NO multibyte characters, I just happened to test it against my unicode db and it worked.

Answer 1

This only happens with the thin driver. I am using 8i. It also works OK if the target db is in UTF8!
D:\myjava>java OracleLongTest
Registering the ORACLE JDBC drivers.
Connecting to database
Connection = oracle.jdbc.driver.OracleConnection@1616c7
Insert via prepared statement with reader length = 2200
Insert with prepared statement was successfull
Updating via prepared statement with reader length = 2200
Update with prepared statement was successfull
===========================================================================
ticketDesc len = 2200 mod date = 970510081398
Updating with reader length = 2200
Updating C1 ts = 970510081608
Updating the row...
Exception 2 = java.sql.SQLException: Data size bigger than max size for this type: 2200
java.sql.SQLException: Data size bigger than max size for this type: 2200
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:114)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:156)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:775)
at oracle.jdbc.ttc7.TTCItem.setArrayData(TTCItem.java:82)
at oracle.jdbc.driver.OraclePreparedStatement.setItem(OraclePreparedStatement.java:761)
at oracle.jdbc.driver.OraclePreparedStatement.setDatum(OraclePreparedStatement.java:1464)
at oracle.jdbc.driver.OraclePreparedStatement.setCHAR(OraclePreparedStatement.java:1397)
at oracle.jdbc.driver.OraclePreparedStatement.setObject(OraclePreparedStatement.java:1989)
at oracle.jdbc.driver.OraclePreparedStatement.setObject(OraclePreparedStatement.java:2200)
at oracle.jdbc.driver.OraclePreparedStatement.setOracleObject(OraclePreparedStatement.java:2216)
at oracle.jdbc.driver.UpdatableResultSet.prepare_updateRow_binds(UpdatableResultSet.java:2070)
at oracle.jdbc.driver.UpdatableResultSet.updateRow(UpdatableResultSet.java:1287)
at OracleLongTest.run(OracleLongTest.java:146)
at OracleLongTest.main(OracleLongTest.java:41)
FINISHED!!
StringBuffer sb = new StringBuffer("");
for(int i = 0; i < 2200; i++)
sb.append("X");
Statement stmt = con.createStatement();
try
String insertSQL = "CREATE TABLE MYLONGTEST (C1 NUMBER(38), C2 LONG)";
stmt.executeUpdate(insertSQL);
catch( SQLException se) {}
PreparedStatement insertPstmt = con.prepareStatement("INSERT INTO MYLONGTEST VALUES (?, ?)");
PreparedStatement updatePstmt = con.prepareStatement("UPDATE MYLONGTEST SET C2 = ? WHERE C1 = ?");
PreparedStatement selectPstmt = con.prepareStatement("SELECT C1,C2 FROM MYLONGTEST WHERE C1 = ?", 1004, 1008);
long ts = System.currentTimeMillis();
String value = sb.toString();
Reader rdr = new StringReader(value);
int len = value.length();
try
System.out.println("Insert via prepared statement with reader length = " + len);
insertPstmt.setLong(1, ts);
insertPstmt.setCharacterStream(2, rdr, len);
insertPstmt.execute();
System.out.println("Insert with prepared statement was successfull");
catch( SQLException se )
System.out.println("Caught exception = " + se.toString());
try
System.out.println("Updating via prepared statement with reader length = " + len);
rdr = new StringReader(value);
updatePstmt.setCharacterStream(1, rdr, len);
updatePstmt.setLong(2, ts);
int rowcount = updatePstmt.executeUpdate();
System.out.println("Update with prepared statement was successfull");
updatePstmt.close();
catch( SQLException se )
System.out.println("Caught exception = " + se.toString());
System.out.println("===========================================================================");
selectPstmt.setLong(1, ts);
ResultSet rs = selectPstmt.executeQuery();
rs.absolute(1);
String c2 = rs.getString("C2");
ts = rs.getLong("C1");
System.out.println("c2 len = " + c2.length() + " mod date = " + ts);
rs.absolute(1);
ts = System.currentTimeMillis();
System.out.println("Updating with reader length = " + len);
rdr = new StringReader(value);
rs.updateCharacterStream("C2", rdr, len);
ts = System.currentTimeMillis();
System.out.println("Updating C1 ts = " + ts);
rs.updateLong("C1", ts);
System.out.println("Updating the row...");
rs.updateRow();
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