Array Inserts with Java?

Hey,
Just doing some forward thinking for a project and ran into a
question that I can't seem to find a straight forward answer to.
I'll be importing data from a flat file structure and want to
make it as fast as possible to process as it may be a large set
of records.
Can Java (JDev 2.0) do array inserts. I'd like to achieve
something like PRO*C in that I want to be able to pass an array
of records to insert, batching them so that it's not a single
network (or database) hit per record inserted.
Any help appriciated!
Doug
null

Doug,
I think any kind of mass inserting is not going to be optimal
over JDBC.
I am pretty sure the batch update just saves you some network
roundtrips. I believe each insert/update would still be a
separate transaction once on the server side, if nothing else for
the purposes of rollbacks, etc.
-L
Doug Gault (guest) wrote:
: Guys,
: Thanks for the quick response.
: I had run into the Batch Update facility but on my initial
: reading it seemed to be more about compacting network traffic
: rather than enhancing mass insert performance.. Did I get the
: wrong end of the stick here?
: What (roughly) happens to the 'Batched' set of transactions
once
: the Database gets it. Is the set processed as a single
: transaction (all or nothing)?
: I'll re-read this section, and take a look at the Tech net
: examples
: Thanks
: Doug
: JDeveloper Team (guest) wrote:
: : Doug,
: : I ran into problems with trying to pass arrays. Namely, with
: : stored procedures, JDBC treats an array argument as an
attempt
: to
: : declare an IN/OUT type parameter, and only allows that array
to
: : contain one object.
: : The JDBC doc has a section on performance enhancements that
you
: : may want to investigate, specifically the Batch Update
facility
: : described in Chapter 4 in the 'Additional Oracle Extensions'
: : section. You can use this to 'batch up sets of inserts or
: : updates' rather than send them one at a time.
: : Alternately, I recommend you check out the JDBC sample code
: : provided on OTN. They have some better 'real world' examples
: : than the JDBC docs.
: : -L
null

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Moderator action: crosspost deleted.

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Problem with SQL java.sql.SQLException: [Microsoft][ODBC Microsoft Access Driver
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1 *eject
2 *----
3 *   Verbuchen der Daten                                           *
4 *----
5 FORM SAVE_DATA.
6
7   DATA: lf_menge LIKE ekpo-menge VALUE 0,                   "717464
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9
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Hi,
Well I don't know why you have duplicates, this is a functionnal issue. But you get the dump due the the message number 864 that triggers the abend... Changing the message type to 'E', 'S' or 'I' will prevent the dump but I guess this message has a good reason to be
Kr,
Manu.

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          for(int i = 1; i <= rsmd.getColumnCount(); i++){
             // if column name matches clob name, then go and do the rest
               if(clobs.contains(rsmd.getColumnName(i))){
                    Clob theClob = lobDetails.getClob(i);
                    Writer clobWriter = ((oracle.sql.CLOB)theClob).getCharacterOutputStream();
                    StringReader clobReader = new StringReader((String) clobHash.get(rsmd.getColumnName(i)));
                    char[] cbuffer = new char[30* 1024]; // Buffer to hold chunks of data to be written to Clob, the slob
                    int nread = 0;
                    try{
                         while((nread=clobReader.read(cbuffer)) != -1){
                              clobWriter.write(cbuffer,0,nread);
                    }catch(IOException ioe){
                       System.out.println("E: clobWriter exception - " + ioe.toString());
                    }finally{
                         try{
                              clobReader.close();
                              clobWriter.close();
                              //System.out.println("   Clob-slob entered for " + tableName);
                         }catch(IOException ioe2){
                              System.out.println("E: clobWriter close exception - " + ioe2.toString());
     try{
          stmt.close();
     }catch(SQLException sqle2){
conn.commit();

Can you use insert .. returning .. so you do not have to select the empty_clob back out.
[I have a similar problem but I do not know the primary key to select on, I am really looking for an atomic insert and fill clob mechanism, somone said you can create a clob fill it and use that in the insert, but I have not seen an example yet.]

How to use SQl server 2005's SQLXMLBulkLoad with JAVA

Hi All,
I am in a big problem identifying how to use xml bulk insert functionality of sql server 2005 with java.
I need to enter millions of data into the sql server 2005 database.
All the material i saw on net includes vb script or asp.net sripts to do so.
Somebody please tell how I can do this with JAVA.
Thanks.

In this forum we commonly discuss connections from Oracle to foreign databases. When you want to connect with your SQL Server to Oracle it would be better to ask that in a Microsoft forum as they support their LINKED SERVER mechanism.
The linked server set up is for example described in the Microsoft knowledge base as:
280106 - HOW TO: Set Up and Troubleshoot a Linked Server to Oracle in SQL Server
In newer SQl Server releases the name changed see for example:
How to run a SQL Server 2005 Integration Services package as a SQL Server Agent job step
View products that this article applies to.
Article ID : 912911
As you can see they are commonly using OLEDB driver. So you might have to install Oracle's OLEDB driver as well. Else you might think about using OLEDB to ODBC bridge

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