Performance Problems by using a subreport with a SAP BW Query

Hello Experts,
we have the following scenario:
- Crystal Reports Report (CRR) on top of a SAP BW Query
- SAP BW Query contains a member structure with Month, Year, Prior Year and total
If I now put some details of a dataset in the main report (e.g. key is project number) and the structure and the characteristic structure in a subreport (linked e.g. by the key project number), the CRR takes like 7,5 hours to display completely. If I don´t use a subreport it takes less then 10 minutes to display (in the preview section of Crystal Reports).
Is such a significant difference in run time normal ? I have to mention that the used query is quite complex (but this is unavoidable). And it seems also unavoidable to use the subreport to get the desired result in terms of formatting:
- if I don´t use the subreport and more than one characteristic for the details, the structure which is supposed to display the values for each projects like this
Month
Year
Prior Year
Total
gets 'dissolved' - first, Month is listed for each project, than Year is listed for each project, etc. This is only avoidable if use only one characteristic and its attributes, but no other characteristics (that are no attribute to the first one). But of course this is not what the customer wants...
- so my only solution up to now is to list the desired details in the main report and then next to them the structure and the key figure data in the subreport, so that the structure is listed as in the query - but then as mentioned the performance is awful !
Many thanks in advance for your help !
Frank

Hi Frank
Have you tried using a join in the main report rather than using the subreport linked on the Project Key Code.
Try joining the query in the main report with the query in the subreport as a single query in the main report.
Let me know your observations.
Regards
Nikhil

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Philippe

Hi, thanks for your interest
I am working with 10.2.0.4
My objective is to load a subset of the reservation data from the tables in the first DB (Reservation-OLTP-150 tables)
to the tables in the second DB (Reporting - about 15 tables at the moment), without affecting performance on the Reservation DB.
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dbms_aqadm.create_queue_table( queue_table => '&&CQT_QUEUE_TABLE_NAME',
queue_payload_type => 'RESV_DETAIL',
comment => 'Report queue table',
multiple_consumers => TRUE,
message_grouping => DBMS_AQADM.NONE,
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secondary_instance => '0');
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queue_name => '&&CRQ_QUEUE_NAME',
queue_table => '&&CRQ_QUEUE_TABLE_NAME',
max_retries => 5);
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o_resv_detail DLEX_AQ_ADMIN.RESV_DETAIL;
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PROCEDURE enqueue_one_message (msg IN RESV_DETAIL)
IS
enqopt           DBMS_AQ.enqueue_options_t;
mprop           DBMS_AQ.message_properties_t;
enq_msgid           dlex_resvevent_aq_admin.msgid_t;
BEGIN
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enqueue_options => enqopt,
message_properties => mprop,
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msgid => enq_msgid
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(using a call to the following 'wrapper' procedure)
PROCEDURE schedule_propagate (
src_queue_name IN VARCHAR2,
destination IN VARCHAR2 DEFAULT NULL
IS
sprocname dlex_types.procname_t:= 'dlex_resvevent_aq_admin.schedule_propagate';
BEGIN
DBMS_AQADM.SCHEDULE_PROPAGATION(queue_name => src_queue_name,
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latency => 10);
EXCEPTION
WHEN OTHERS
THEN
DBMS_OUTPUT.put_line (SQLERRM || ' occurred in ' || sprocname);
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this is a wrapper procedure that uses:
DBMS_AQADM.add_subscriber (queue_name => p_queue_name, subscriber => subscriber_agent );
Then notification is registered with:
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- job_queue_processes is set to 10
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CREATE OR REPLACE PROCEDURE DLEX_AQ_ADMIN.queue_callback
context RAW,
reginfo SYS.AQ$_REG_INFO,
descr SYS.AQ$_DESCRIPTOR,
payload RAW,
payloadl NUMBER
IS
s_procname CONSTANT VARCHAR2 (40) := UPPER ('queue_callback');
r_dequeue_options DBMS_AQ.DEQUEUE_OPTIONS_T;
r_message_properties DBMS_AQ.MESSAGE_PROPERTIES_T;
v_message_handle RAW(16);
o_payload RESV_DETAIL;
BEGIN
r_dequeue_options.msgid := descr.msg_id;
r_dequeue_options.consumer_name := descr.consumer_name;
DBMS_AQ.DEQUEUE(
queue_name => descr.queue_name,
dequeue_options => r_dequeue_options,
message_properties => r_message_properties,
payload => o_payload,
msgid => v_message_handle
-- Call procedure to load data from reservation database to Reporting DB through the DB link
dlex_report.dlex_data_load.load_reservation
( in_resvcode => o_payload.resv_code,
in_resvHistorySequence => o_payload.resv_history_sequence );
COMMIT;
END queue_callback;
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I guess I would need to use the REMOVE option to delete messages from the queue?
Would this be a large source of performance degradation after just a few thousand messages?
- The data load through the DB may be a little bit intensive but I feel that doing things in parallel would help.
I would like to understand if Oracle has a way of dequeuing in parallel (with or without the use of notification)
In the case of multiple subscribers with notification , does 'job_queue_processes' value has an impact on the degree of parallelism? If not what setting has?
And is there a way supplied by Oracle to set the queue to notify only one subscriber per message?
Your advice would be very much appreciated
Philippe
Edited by: user528100 on Feb 23, 2009 8:14 AM

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import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;
import java.util.zip.*;
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          desDec.init(Cipher.DECRYPT_MODE, desKeyDec);
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import java.net.*;
import java.security.*;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;
import java.util.zip.*;
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import java.net.*;
import java.security.*;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;
import java.util.zip.*;
class serverSocketDemo
     private Cipher desEnc,desDec;
     serverSocketDemo()
          try
               // register the provider that implements the algorithm
               Provider sunJce = new com.sun.crypto.provider.SunJCE( );
               Security.addProvider(sunJce);
               // create a key
               byte[] desKeyData = "This encryption can not be decrypted".getBytes();
               DESKeySpec desKeySpec = new DESKeySpec(desKeyData);
               SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
               SecretKey desKey = keyFactory.generateSecret(desKeySpec);
               desEnc = Cipher.getInstance("DES");
               desEnc.init(Cipher.ENCRYPT_MODE, desKey);
               desDec = Cipher.getInstance("DES");
               desDec.init(Cipher.DECRYPT_MODE, desKey);
          catch (javax.crypto.NoSuchPaddingException e)
               System.out.println(e);
          catch (java.security.NoSuchAlgorithmException e)
               System.out.println(e);
          catch (java.security.InvalidKeyException e)
               System.out.println(e);
          catch(Exception e)
               System.out.println(e);
          startProcess();
     public void startProcess()
          try
               ServerSocket server=new ServerSocket(2000);
               while (true)
                    final Socket theConnection=server.accept();
                    System.out.println("Connecting from local address : "+theConnection.getLocalAddress());
                    System.out.println("Connection request from : "+theConnection.getInetAddress());
                    Thread input=new Thread()
                         public void run()
                              try
                                   //Input starts from here
                                   Reader in=new InputStreamReader(new BufferedInputStream(new CipherInputStream(theConnection.getInputStream(), desDec)),"ASCII");
                                   StringBuffer strbuf=new StringBuffer();
                                   int c;
                                   while (true)
                                        c=in.read();
                                        if(c=='\n'|| c==-1)
                                             break;
                                        strbuf.append((char)c);
                                   String str=strbuf.toString();
                                   System.out.println("Message from Client : "+str);
                              catch(Exception e)
                                   System.out.println("Error caught inside input Thread : "+e);
                    input.start();
                    Thread output=new Thread()
                         public void run()
                              try
                                   //Output starts from here
                                   OutputStream out=new BufferedOutputStream(new CipherOutputStream(theConnection.getOutputStream(), desEnc));
                                   System.out.println("it will not be printed");
                                   out.write("You are Welcome\n".getBytes());
                                   out.flush();
                              catch(Exception e)
                                   System.out.println("Error caught inside output Thread : "+e);
                    output.start();
                    try
                         output.join();
                         input.join();
                    catch(Exception e)
                    theConnection.close();
          catch(BindException e)
               System.out.println("The Port is in use or u have no privilage on this port");
          catch(ConnectException e)
               System.out.println("Connection is refused at remote host because the host is busy or no process is listening on that port");
          catch(IOException e)
               System.out.println("Connection disconnected");
          catch(Exception e)
     public static void main(String args[])
          serverSocketDemo server=new serverSocketDemo();
clientSocketDemo.java
import java.io.*;
import java.net.*;
import java.security.*;
import java.security.spec.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.util.*;
import java.util.zip.*;
class clientSocketDemo
     private Cipher desEnc,desDec;
     clientSocketDemo()
          try
               // register the provider that implements the algorithm
               Provider sunJce = new com.sun.crypto.provider.SunJCE( );
               Security.addProvider(sunJce);
               // create a key
               byte[] desKeyData = "This encryption can not be decrypted".getBytes();
               DESKeySpec desKeySpec = new DESKeySpec(desKeyData);
               SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
               SecretKey desKey = keyFactory.generateSecret(desKeySpec);
               desEnc = Cipher.getInstance("DES");
               desDec = Cipher.getInstance("DES");
               desEnc.init(Cipher.ENCRYPT_MODE, desKey);
               desDec.init(Cipher.DECRYPT_MODE, desKey);
          catch (javax.crypto.NoSuchPaddingException e)
               System.out.println(e);
          catch (java.security.NoSuchAlgorithmException e)
               System.out.println(e);
          catch (java.security.InvalidKeyException e)
               System.out.println(e);
          catch(Exception e)
               System.out.println(e);
          startProcess();
     public void startProcess()
          try
               final Socket theConnection=new Socket("localhost",2000);
               System.out.println("Connecting from local address : "+theConnection.getLocalAddress());
               System.out.println("Connecting to : "+theConnection.getInetAddress());
               Thread output=new Thread()
                    public void run()
                         try
                              //Output starts from here
                              OutputStream out=new BufferedOutputStream(new CipherOutputStream(theConnection.getOutputStream(), desEnc));
                              out.write("Please Welcome me\n".getBytes());
                              out.flush();
                         catch(Exception e)
                              System.out.println("Error caught inside output thread : "+e);
               output.start();
               Thread input=new Thread()
                    public void run()
                         try
                              //Input starts from here
                              Reader in=new InputStreamReader(new BufferedInputStream(new CipherInputStream(theConnection.getInputStream(), desDec)),"ASCII");
                              System.out.println("it will not be printed");
                              StringBuffer strbuf=new StringBuffer();
                              int c;
                              while (true)
                                   c=in.read();
                                   if(c=='\n' || c==-1)
                                        break;
                                   strbuf.append((char)c);
                              String str=strbuf.toString();
                              System.out.println("Message from Server : "+str);
                         catch(Exception e)
                              System.out.println("Error caught inside input Thread : "+e);
               input.start();
               try
                    output.join();
                    input.join();
               catch(Exception e)
               theConnection.close();
          catch(BindException e)
               System.out.println("The Port is in use or u have no privilage on this port");
          catch(ConnectException e)
               System.out.println("Connection is refused at remote host because the host is busy or no process is listening on that port");
          catch(IOException e)
               System.out.println("Connection disconnected");
          catch(Exception e)
     public static void main(String args[])
          clientSocketDemo client=new clientSocketDemo();
**** I know that the CInput tries to read some header stuff thats why i used two threads for input and output.
Waiting for the reply.
Thank you.

Do not ever post your code unless requested to. It is very annoying.
Try testing what key is being used. Just to test this out, build a copy of your program and loop the input and outputs together. Have them print the data stream onto the screen or a text file. Compare the 1st Output and the 2nd Output and the 1st Input with the 2nd Input and then do a static test of the chipher with sample data (same data which was outputted), then do another cipher test with the ciphertext created by the first test.
Everything should match - if it does not then follow the steps below.
Case 1: IO Loops do not match
Case 2: IO Loops match, but ciphertext 1st run does not match loop
Case 3: IO Loops match, 1st ciphertext 1st run matches, but 2nd run does not
Case 4: IO Loops match, both chiphertext runs do not match anything
Case 5: Ciphertext runs do not match eachother when decrypted correctly (outside of the test program)
Problems associated with the cases above:
Case 1: Private Key is changing on either side (likely the sender - output channel)
Case 2: Public Key is changing on either side (likely the sender - output channel)
Case 3: Private Key changed on receiver - input channel
Case 4: PKI failure, causing private key and public key mismatch only after a good combination was used
Case 5: Same as Case 4

Problems in using a certificate with different versions of JVM

Hi friends,
I am facing a typical problem:
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     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.b(DashoA12275)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(DashoA12275)
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     at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(DashoA12275)
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     at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(DashoA12275)
     at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.post(HttpSOAPConnection.java:263)
     at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection$PriviledgedPost.run(HttpSOAPConnection.java:151)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.call(HttpSOAPConnection.java:121)
     at TestRequest.getCustomerInfo(TestRequest.java:60)
     at TestRequest.main(TestRequest.java:122)After some investigation I found that this JRE is accepting only certificate with sha1RSA signature algorithm. Please help me if anybody knows why this occurs or is this an issue which is to be addressed in server side.

Hi Michal,
Keeping in mind the recommendations of the Production Checklist...
All other things being equal, homogenous deployments are usually less prone to surprises.
But JDK 1.6 is noticeably faster than JDK 1.4, and features much better JMX support as well, so it's a probably the better option.
Jon Purdy
Oracle

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