SPARC T4 - Dynamic Threading - Oracle Database

i have a simple question about the new Sparc T4 line
Can I use T4 running Oracle Database - RAC (Standard Edition)? Database is not recommended for T3 processors, oracle says "t (3) line is for applications, for database sparc M Line is more suitable " but this data sheet below says..
"*Dynamic Threading*
SPARC T4 is dynamically threaded. While software can activate up to eight strands on each core at a
time, hardware dynamically and seamlessly allocates core resources such as instruction, data, and L2
caches and TLBs, as well as out-of-order execution resources such as the 128-entry re-order buffer in
the core. These resources are allocated among the active strands. Software activates strands by sending
an interrupt to a HALTed strand. Software deactivates strands by executing a HALT instruction on
each strand that is to be deactivated. No strand has special hardware characteristics. All strands have
identical hardware capabilities."
Whit this new feature... can i use oracle rac database on T4?
Can someone help me please?
tks,
Robson

I am not the most authorative person to answer this:
Datasheets such as http://www.oracle.com/us/products/servers-storage/servers/sparc-enterprise/t-series/sparc-t4-2-ds-487859.pdf indicate the T4 for database workloads
I guess you have alo found http://www.oracle.com/us/corporate/features/sparc-t4-announcement-494846.html
Basically there are times with a database that a thread wants to do a lot of CPU work .... on a T3 this ends up on one thread on one of hte cores.
On a T4 ... providing the core's are not fully utilitized, the thread requiring a lot of CPU should be allocated a whole core to itself .... and run much more quickly.
So for instance starting or upgrading a single databse on a T4 should run much much faster on T4 as opposed to T3. And that probably is the case of a failover also.
Anyway to give a couple of not so simple answers (and these are my personal answers):
- Can one use a T3 for RAC .... yes but it iisn't recommended and failover and other operations may be lenghtly.
- Can one use a T4 for RAC .... yes ... it will certainly outperform a T3. Is it recommended ... (pass ... ask the salesman).
... I am happy for others to add comments.

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Message was edited by:
Bart Kummel

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import org.eclipse.persistence.platform.database.DatabasePlatform;
import org.eclipse.persistence.sessions.SessionProfiler;
public class AS400Platform extends DatabasePlatform {
    private static final long serialVersionUID = 0L;
    public AS400Platform(){
         super();
         super.setShouldBindAllParameters(false);
    public void printSQLSelectStatement(DatabaseCall call, ExpressionSQLPrinter printer, SQLSelectStatement statement) {
        int max = 0;
        int firstRow = 0;
        if (statement.getQuery()!=null){
            max = statement.getQuery().getMaxRows();
            firstRow = statement.getQuery().getFirstResult();
        if ( !(max>0) && !(firstRow>0) ){
            super.printSQLSelectStatement(call, printer,statement);
            return;
        } else {
            statement.setUseUniqueFieldAliases(true);
            ExpressionBuilder builder = new ExpressionBuilder();
            statement.addField(builder.getField("COUNTER() AS CNTR"));
            printer.printString("SELECT * FROM (");
            call.setFields(statement.printSQL(printer));
            printer.printString(") AS R WHERE R.CNTR >= ");
            printer.printParameter(DatabaseCall.FIRSTRESULT_FIELD);
            if ( max > 0 ){
                // Use of binding parameters is not allowed here, so use
                // String concatenation instead...
                printer.printString(" FETCH FIRST " + max + " ROWS ONLY");
        call.setIgnoreFirstRowMaxResultsSettings(true);
    public boolean wasFailureCommunicationBased(SQLException exception, Connection connection, AbstractSession sessionForProfile){
        if (connection == null || this.pingSQL == null){
            //Without a connection we are unable to determine what caused the error so return false.
            //The only case where connection will be null should be External Connection Pooling so
            //returning false is ok as there is no connection management requirement
                //If there is no ping sql then we can not perform the ping.
            return false;
        PreparedStatement statement = null;
        try{
            sessionForProfile.startOperationProfile(SessionProfiler.ConnectionPing);
            if (sessionForProfile.shouldLog(SessionLog.FINE, SessionLog.SQL)) {// Avoid printing if no logging required.
                 sessionForProfile.log(SessionLog.FINE, SessionLog.SQL, getPingSQL(), (Object[])null, null, false);
            statement = connection.prepareStatement(getPingSQL());
            ResultSet result = statement.executeQuery();
            result.close();
            statement.close();
        }catch (SQLException ex){
            try{
                // Had to add this check because of NullPointerExceptions
                // (maybe a bug?)
                if(statement != null){
                    //try to close statement again in case the query or result.close() caused an exception.
                    statement.close();
            } catch (SQLException exception2) {
                //ignore;
            return true;
        }finally{
            sessionForProfile.endOperationProfile(SessionProfiler.ConnectionPing);
        return false;
}(As you can see, I had to override the <tt>wasFailureCommunicationBased()</tt> method as well, due to some unexpected NPE's. (A bug, perhaps?))
This code does work. However, the performance is not very well. The first page comes relatively fast, but as you browse further in the table, each page comes slower. I assume this is because the counter() method has to be evaluated for each row in the table.
I have to get the performance better and constant. Does anyone have an idea how to optimize this further?
Best regards,
Bart Kummel

Connecting Oracle DataBase through WebDynpro

Hi,
I created a Dynamic table, now I should display the data from Oracle Database. I tried in many various ways to connect to database, but the data is not retrieving.
Can u explain the reasons and give necessary coding to retrieve the data.
Its very very urgent.

Hi
I think you can do using the APIs provided by SAP.
Check this link
JDBC Reference
or
Try connectinc using lookup.
try{
InitialContext ctx=new InitialContext();
javax.sql.DataSource ds=(javax.sql.DataSource)ctx.lookup("jdbc/SAPJ2EDB");
java.sql.Connection con=ds.getConnection();
java.sql.Statement stmt=con.createStatement();
con.close();
catch(Exception e)
wdComponentAPI.getMessageManager().reportException("Exception "+e,true);
Check this thread moreuseful.
WebDynpro and Oracle Connection
Please Check these threads
Re: I need a j2ee code for getting data from oracle database
Re: oracle connection
Re: problem with displaying records from the database in a table ui element
See this sample application and help
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/library/uuid/f0b0e990-0201-0010-cc96-d7ecd2e51715
I hope these links will help u resolve your problem.
All The Best
Priyanka
Do Reward Points

Running oracle database xe (express edition) on windows server 2008 r2

Is it supported to run Oracle Database XE on Windows Server 2008 R2?
Database XE is only supported as 32-bit. Current builds of Windows Server 2008 only come in x64 configurations.
Here are the Database XE system requirements for windows:
[http://docs.oracle.com/cd/E17781_01/install.112/e18803/toc.htm]
The docs say that 32-bit windows is required, yet they also say that windows server 2008 is supported.
Windows Server 2008 R2 came out in 2009, and in R2 they eliminated 32-bit OS (though there is the WOW64 subsystem to run 32-bit programs within the 64-bit OS).
See:
- [Wikipedia page about windows server 2008 with info on R2|http://en.wikipedia.org/wiki/Windows_Server_2008#Windows_Server_2008_R2]
- [Wikipedia page on "windows 32-bit on windows 64-bit"|http://en.wikipedia.org/wiki/WOW64]
Thanks,
Matt

Hello Matt,
Is it supported to run Oracle Database XE on Windows Server 2008 R2?No.
The docs say that 32-bit windows is required, yet they also say that windows server 2008 is supported.So this means that only 32bit versions of 2008 will be supported.
Windows Server 2008 R2 came out in 2009, and in R2 they eliminated 32-bit OS (though there is the WOW64 subsystem to run 32-bit programs within the 64-bit OS).Which is probably why 2008 R2 is not supported.
You can either take the VM approach and install a 32 bit Windows or 64 bit Linux host, or you can queue in the list of persons waiting for a 64 bit Windows release. See the following thread for details (and the queue) for the latter: {thread:id=2277728}
-Udo

How to pass a date parameter from report builder query designer to oracle database

i'm using report builder 3.0 connected to oracle database. i'm trying to pass a date parameter in the query with no success, i don't
know the exact syntax. I've tried :
SELECT * FROM igeneral.GCL_CLAIMS where CREATED_BY IN (:CREATED_BY) AND CLAIM_YEAR IN(:UW_YEAR) AND (LOSS_DATE) >To_Date('01/01/2014','mm/dd/yyyy')
it worked perfectly.
However if i try to put a date parameter "From" instead of 01/01/2014 it will not work, a Define Query Parameter popup window appear and error occurred after i fill
the values (usually i shouldnt get this popup i should enter the value when i run the report)
SELECT * FROM igeneral.GCL_CLAIMS where CREATED_BY IN (:CREATED_BY) AND CLAIM_YEAR IN(:UW_YEAR) AND (LOSS_DATE) >To_Date(:From,'mm/dd/yyyy')
appreciate your assistance

Hi Gorgo,
According to your description, you have problem when in passing a parameter for running a Oracle Query. Right?
Based on my knowledge, it use "&" as synax for parameter in Oracle, like we use "@" in SQL Server. In this scenario, maybe you can try '01/01/2014' when inputing in "From". We are not sure if there's any limitation for To_Date()
function. For your self-testing, you can try the query in sqlplus/sql delveloper. Since your issue is related to Oracle query, we suggest you post this thread onto Oracle forum.
Best Regards,
Simon Hou

Problem with Java and Oracle Database - help !

i keep getting a NullPointerException when trying to
update a resultSet in a servlet. i am bringing in the data
just fine from an Oracle database. but it chokes when trying
to update it. can anybody tell me what is happening?
thanks for any help
Owen
ResultSet rs = stmt.executeQuery( "select * from sw_assets" );
rs.next();
rs.updateString("name","XXX"); <--- BOOM !
java.lang.NullPointerException
at sun.jdbc.odbc.JdbcOdbcBoundCol.setRowValues(JdbcOdbcBoundCol.java:240)
at sun.jdbc.odbc.JdbcOdbcResultSet.updateChar(JdbcOdbcResultSet.java:3767)
at sun.jdbc.odbc.JdbcOdbcResultSet.updateString(JdbcOdbcResultSet.java:3257)
at sun.jdbc.odbc.JdbcOdbcResultSet.updateString(JdbcOdbcResultSet.java:3848)
at _0002fopen_0002ejspopen_jsp_3._jspService(_0002fopen_0002ejspopen_jsp_3.java:87)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)

ResultSets based on a wildcard are generally treated as views by Oracle, meaning they are not updatable no matter how you create your statement. Try either "select swa.* from sw_assets swa" or "select all from sw_assets swa", that should get around the problem.
Also (just being thorough) make sure that you specifically created your statement as being updatable (stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE) ).
I would not normally expect a NullPointerException when encountering this "feature", but then I don't often use the ODBC bridge.
Good luck! I hope this helps.

SPARC T4 - Dynamic Threading - Oracle Database

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