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7.8

Bulk updates in SYBASE using Java Batch Updates

Asked by farhanitman in Sybase Database, Java Standard Edition, Java Programming Language

Tags: sybase, sql, query, java

I have to execute many updates on a table using java batch updates, but i when i try to execute my code on 22,000 records, it just hangs.

How can i optimize the updates to not use NOARCHIVELOG, as in Oracle database. How can i make my updates faster?

Get your answer NOW

         
           
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             String updateSql = "UPDATE AMF " +
                    " SET BLOCKED_CV = ?, " +
                    " BLOCKED_FC = ? " +
                    " WHERE BRANCH_CODE = ? " +
                    " AND CURRENCY_CODE = ? " +
                    " AND GL_CODE = ? " +
                    " AND CIF_SUB_NO = ? " +
                    " AND SL_NO = ? ";
            statement = conn.prepareStatement(updateSql);
            if (totalColumns > 0) {
                //Now writing records in csv file
                for (int r = 0; r < totalRows; r++) {
 
                    rowVector = (Vector) IADataVector.get(r);
                    // only update those blocked amounts which exists on imal side
                    if (rowVector.get(INDEX_PIBAS_ADDREF) != null &&
                            rowVector.get(INDEX_IMAL_ADDREF) != null) {
 
                        //System.out.println("updateRows= " + updateRows);
 
                        blockAmount = new Double(rowVector.get(INDEX_PIBAS_SHDWBALN).toString()).doubleValue();
                        branch = new Integer(rowVector.get(INDEX_IMAL_BRANCH).toString()).intValue();
                        currency = new Integer(rowVector.get(INDEX_IMAL_CURRENCY).toString()).intValue();
                        glCode = new Long(rowVector.get(INDEX_IMAL_GL).toString()).longValue();
                        cifNo = new Long(rowVector.get(INDEX_IMAL_CIF).toString()).longValue();
                        slNO = new Integer(rowVector.get(INDEX_IMAL_SL).toString()).intValue();
 
                        if (currency == 586) {
                            statement.setDouble(1, blockAmount);
                            statement.setLong(2, 0);
                        } else {
                            statement.setLong(1, 0);
                            statement.setDouble(2, blockAmount);
                        }
                        statement.setInt(3, branch);
                        statement.setInt(4, currency);
                        statement.setLong(5, glCode);
                        statement.setLong(6, cifNo);
                        statement.setInt(7, slNO);
 
                        statement.addBatch();
                    }
                    updateRows++;
                }
                statement.executeBatch();
            }
            statement.close();
            conn.commit();

           
         

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Bulk updates in SYBASE using Java Batch Updates

Asked by farhanitman in Sybase Database, Java Standard Edition, Java Programming Language

Tags: sybase, sql, query, java

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