Inserting data into a Clob

Question

I need to insert data into a Clob (>8k) and have not been able to determine how
to do it without using Oracle's extensions to the JDBC JDK.
Does anyone have a code snippet to show how to populate the Clob in the first
place?
Thanks,
Cully.
Settings from weblogic.properties:
weblogic.jdbc.connectionPool.oraclePoolCSA=\
url=jdbc:oracle:thin:@IHP273:1521:AIRCORE,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=1,\
initialCapacity=1,\
maxCapacity=2,\
capacityIncrement=2,\
allowShrinking=true,\
shrinkPeriodMins=15,\
refreshMinutes=10,\
testTable=dual,\
props=user=csav2;password=csav2
weblogic.allow.reserve.weblogic.jdbc.connectionPool.oraclePoolCSA=\
guest,everyone
weblogic.allow.reset.weblogic.jdbc.connectionPool.oraclePoolCSA=everyone
weblogic.allow.shrink.weblogic.jdbc.connectionPool.oraclePoolCSA=everyone
weblogic.jdbc.TXDataSource.CSATXDataSource=oraclePoolCSA

Answer 1

Shiva,
That was it....instead of doing the Blob work all in the same insert
statement, I grabbed a new sequence and inserted a row with an empty_blob().
After that I did an update on that row setting the correct value of the
Blob.
Thanks for the help!!
"Shiva Paranandi" <[email protected]> wrote in message
news:[email protected]...
I tried with SP2 only and it works. The problems might be that you aregetting a
null blob. Try inserting an emtpy blob first. Check out this program whichworks
for me on WLS 6, SP2.
Shiva.
Tony Bailey wrote:
Still getting the NPE. Any other ideas??? Are you able to do this
successfully on sp2?
"Shiva Paranandi" <[email protected]> wrote in message
news:[email protected]...
Try these two things:
1. Change your SQL query to "SELECT image FROM " + table + " for
update";
2. Also, set conn.setAutoCommit(false);
Shiva.
Tony Bailey wrote:
If I step through the code in the debugger, everything is A-OK up
until
the
getBinaryOutputStream, then I get a NPE. The blob appears to be
instantiated when I toString() it in the previous line.
private Blob getBlob(File f, String table)
throws SQLException
Connection conn = null;
PreparedStatement pstmt = null;
ResultSet rs = null;
String SQL;
Blob imgblob = null;
FileInputStream fis = null;
OutputStream bos = null;
try
conn = dbutil.getConnection();
SQL = "SELECT image FROM " + table;
pstmt = conn.prepareStatement(SQL);
rs = pstmt.executeQuery();
rs.next();
imgblob = rs.getBlob("image");
logger.log(Debug.DEBUG, "DictTblCtrlr.getBlob(): The
blob
is: "
+ imgblob);
fis = new FileInputStream(f);
bos = ((OracleBlob)imgblob).getBinaryOutputStream();
byte[] buffer = new byte[65534];
int length = -1;
while ((length = fis.read(buffer)) != -1)
bos.write(buffer, 0, length);
bos.flush();
catch (Exception sqle)
logger.log(Debug.ERROR, "DictTblCtrlr.getBlob(): " +
sqle.getMessage());
sqle.printStackTrace();
throw new SQLException(sqle.getMessage());
finally
try { fis.close();  bos.close(); } catch (Exception e)
dbutil.release(rs, pstmt, conn);
return imgblob;
[07-19-2001 03:02:07] DEBUG:DictTblCtrlr.getBlob(): The blob is:
weblogic.jdbc.rmi.SerialBlob@1f1f12
[07-19-2001 03:02:23] ERROR:DictTblCtrlr.getBlob():
java.lang.NullPointerException
java.sql.SQLException: java.lang.NullPointerException
at
weblogic.jdbc.rmi.SerialBlob.getBinaryOutputStream(SerialBlob.java:73)
at
com.uctech.psws.persistence.datacontroller.DictionaryTableController.getBlob
(DictionaryTableController.java:410)
at
com.uctech.psws.persistence.datacontroller.DictionaryTableController.insert(
DictionaryTableController.java:363)
"Shiva Paranandi" <[email protected]> wrote in message
news:[email protected]...
Could you post the exception?
Shiva.
Tony Bailey wrote:
Using the example, I get a NullPointerException when calling
getBinaryOutputStream() under WL6.0sp2.
"Filip Hanik" <[email protected]> wrote in message
news:[email protected]...
look under
$BEA_HOME/wlserver6.0sp1/samples/examples/jdbc/oracle/OracleBlobClob.java
>>>>>>>
~
Namaste - I bow to the divine in you
~
Filip Hanik
Software Architect
[email protected]
www.filip.net
"Cully Orstad" <[email protected]> wrote in message
news:[email protected]...
I need to insert data into a Clob (>8k) and have not been
able
to
determine how
to do it without using Oracle's extensions to the JDBC JDK.
Does anyone have a code snippet to show how to populate the
Clob
in
the
first
place?
Thanks,
Cully.
Settings from weblogic.properties:
weblogic.jdbc.connectionPool.oraclePoolCSA=\
url=jdbc:oracle:thin:@IHP273:1521:AIRCORE,\
driver=oracle.jdbc.driver.OracleDriver,\
loginDelaySecs=1,\
initialCapacity=1,\
maxCapacity=2,\
capacityIncrement=2,\
allowShrinking=true,\
shrinkPeriodMins=15,\
refreshMinutes=10,\
testTable=dual,\
props=user=csav2;password=csav2
weblogic.allow.reserve.weblogic.jdbc.connectionPool.oraclePoolCSA=\
guest,everyone
weblogic.allow.reset.weblogic.jdbc.connectionPool.oraclePoolCSA=everyone
>>>>>>>>
>>>>>>
>>>>
>>
weblogic.allow.shrink.weblogic.jdbc.connectionPool.oraclePoolCSA=everyone
>>>>>>>>
weblogic.jdbc.TXDataSource.CSATXDataSource=oraclePoolCSA