Updating ROWID in java program

Question

Hi Folks,
I am updating a row in using ROWID in java program, it is not updating the records based on the rowid.. I am copying the sample code
          try{
               for(i = 0; i < size ; i++) {
                    stmt.clearParameters();
               oracle.sql.ROWID rowIds = (oracle.sql.ROWID)list.get(i);                    
                    stmt.setString(1,status);
                    stmt.setString(2,idArray[i]);
                    stmt.setString(3,message[i]);
                    stmt.setROWID(4,rowIds);                    
                    stmt.executeUpdate();                    
                    //stmt.addBatch();
Java Method to update the SQL
private String getUpdateSqlString(){
          StringBuffer sql = new StringBuffer(20);
          sql.append(" update xx_custom_table set status_flag = ? , ");
          sql.append(" id= ?, status_message = ? where rowid = ? ");
          sql.append(" status_flag = 'U' ");
          return sql.toString();
Can any one explain this ?
Thanks
Kranthi

Answer 1

kumar_d wrote:
I checked the list, valid rowid is populated in the list. Can you explain how you determined that and what, exactly, you mean by "valid rowid"?
You are stating that every element in LIST is
- A ROWID in a valid format
- That corresponds to a row in XX_PRODUCT_TABLE
- Where STATUS_FLAG = 'U' already?
The only way to get that information is to query the XX_PRODUCT_TABLE table, so presumably you are doing that before this snippet of code runs. Any chance that the row is modified or deleted by some other session between the time you query the database to get the ROWID and the time you run the update?
And more generally, why are you using the ROWID here? It seems odd that you would be identifying the rows to update, storing the set of rows to update in a Java collection, and then iterating over that collection to do the actual updates. A simple set-based UPDATE, or at least a stored procedure, would seem far more efficient...
Justin