how to add qr code in crystal report TRANSACTIONS in Font

Making Code 39 Extended in Font TRANSACTIONS

USS Code 39 Printer In None
Using Barcode printer for Font Control to generate, create Code 39 image in Font applications.
UPC-A Supplement 5 Generation In None
Using Barcode creation for Font Control to generate, create UCC - 12 image in Font applications.
The procedure _doInsertCommitOutsideLoop() does the same thing, except the commit is outside the loop (shown in bold): private static void _doInsertCommitOutsideLoop( Connection conn ) throws SQLException { String stmtString = "insert into t1( x ) values ( )"; PreparedStatement pstmt = null; try { pstmt = conn.prepareStatement( stmtString ); for( int i=0; i < NUM_OF_RECORDS; i++ ) { pstmt.setInt( 1, 1 ); pstmt.executeUpdate(); } conn.commit(); } finally { JDBCUtil.close( pstmt ); } } private static final int NUM_OF_RECORDS = 10000; } Note that the PreparedStatement interface just used is covered in more detail in 5. When we run the program BenchmarkIntermittentCommits, we get the following output: B:\>java BenchmarkIntermittentCommits URL:jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp) (PORT=1521)(HOST=rmenon-lap))(CONNECT_DATA=(SID=ora10g))) ------- Benchmark Results -------Results from RUNSTATS utility Run1 ran in 1300 hsecs Run2 ran in 363 hsecs run 1 ran in 358.13% of the time Name STAT...commit txn count during <- trimmed to conserve space -> STAT...redo size Run1 Run2 0 Diff 1 2,462,672 1 -2,898,876
Printing USS Code 39 In None
Using Barcode drawer for Font Control to generate, create ANSI/AIM Code 39 image in Font applications.
Paint QR Code ISO/IEC18004 In None
Using Barcode creation for Font Control to generate, create QR Code 2d barcode image in Font applications.
EAN / UCC - 13 Creator In None
Using Barcode drawer for Font Control to generate, create UCC-128 image in Font applications.
Make PDF 417 In None
Using Barcode creation for Font Control to generate, create PDF 417 image in Font applications.
Data Matrix ECC200 Encoder In None
Using Barcode drawer for Font Control to generate, create Data Matrix ECC200 image in Font applications.
Creating UPC-E In None
Using Barcode generator for Font Control to generate, create UPC-E Supplement 5 image in Font applications.
Run1 latches total versus runs -- difference and pct Run1 Run2 Diff Pct 585,190 126,639 -458,551 462.09%
Code 39 Full ASCII Drawer In C#
Using Barcode creation for .NET Control to generate, create USS Code 39 image in VS .NET applications.
Painting Code39 In Objective-C
Using Barcode printer for iPhone Control to generate, create USS Code 39 image in iPhone applications.
Runtime Execution Time Differences as seen by the client Run1 ran in 1318 hsecs Run2 ran in 365 hsecs Run1 ran in 361% of the time As you can see, the method _doInsertCommitInLoop() took around 360% of the time and consumed approximately 460% of latches as compared to the method _doInsertCommitOutsideLoop(). From the previous discussion, we can conclude that in Oracle we should issue commits based on our transaction needs, not based on the amount of resources (such as disk space) that would be consumed. This is because issuing intermittent commits in the misguided attempt to save resources leads to compromised data integrity, an overall increase in resource consumption, and more complex and bug-ridden code that runs slowly and does not scale. Thus, we should adjust the Oracle resources consumed in a transaction according to our transaction needs (which, in turn, are based on business requirements), not the other way around. Of course, we should strive to use all Oracle resources optimally.
Code 128 Code Set B Maker In None
Using Barcode maker for Online Control to generate, create Code 128C image in Online applications.
Scan EAN / UCC - 13 In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
Note Splitting a transaction seems to be a common (and possibly sound) performance optimization
Make USS Code 39 In None
Using Barcode encoder for Office Excel Control to generate, create Code39 image in Excel applications.
Make Code 128A In Objective-C
Using Barcode maker for iPhone Control to generate, create Code-128 image in iPhone applications.
technique in many other databases, such as Microsoft SQL Server, since these databases have a large transaction overhead. Note, however, that even for these databases, other disadvantages such as compromised data integrity and increased code complexity still remain. Oracle was designed from the ground up to deal with large transactions and, as we ve seen in this section, using this technique in Oracle isn t required and isn t a good idea.
EAN13 Creation In Objective-C
Using Barcode drawer for iPad Control to generate, create UPC - 13 image in iPad applications.
QR Code 2d Barcode Creator In VB.NET
Using Barcode encoder for VS .NET Control to generate, create QR Code image in .NET framework applications.
The Autocommit Feature and Turning It Off
Painting EAN13 In Java
Using Barcode maker for BIRT Control to generate, create UPC - 13 image in BIRT reports applications.
Making UPC A In None
Using Barcode encoder for Software Control to generate, create UPC-A Supplement 5 image in Software applications.
In JDBC, when we obtain a connection, by default it is in autocommit mode. This means that a commit is automatically issued after every SQL statement has been successfully executed. In other words, every SQL statement we issue is treated as a separate transaction. From the discussion in the previous section, you should know why this is not a good idea. Thus, after getting a connection, we should always turn this feature off by invoking the setAutoCommit() method on the Connection object, as highlighted in the following code snippet: Connection connection = null; try {
Making 1D Barcode In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create 1D Barcode image in ASP.NET applications.
Drawing QR Code In C#
Using Barcode generation for Visual Studio .NET Control to generate, create Denso QR Bar Code image in Visual Studio .NET applications.
// ods is an initialized OracleDataSource object elsewhere connection = ods.getConnection(); connection.setAutoCommit( false ); . . . } . . . In fact, we do this in the getConnection() method in the JDBCUtil class. One implication of turning off autocommit is that if we have made any changes, we need to explicitly commit them in case of success or roll them back in case of error (since we would be turning off the autocommit feature). The commit and rollback methods could throw a SQLException, though this is a rare situation and cannot typically be handled by the application. Note that when autocommit is off, and a connection is closed without a commit or a rollback, an implicit commit is issued by Oracle, thus committing any uncommitted changes.
Note There is an inconsistency in the Oracle JDBC driver (including the 10g driver) wherein if you commit once (with autocommit off), execute some other DMLs, and then forget to commit, the DMLs are rolled back (as opposed to being implicitly committed as the document Oracle Database JDBC Developer s Guide and Reference states).
However, we should always explicitly commit or roll back our transactions, since the default action may not be what we desire. Typically, we commit at the end of the transaction and roll back if there is an exception before reaching the commit statement in our program.
Turn off the JDBC autocommit feature right after you obtain a connection in your JDBC application Tip
Copyright © . All rights reserved.