Hanging on Multi-threaded DB Partition to Oracle -cnt'd

Hi All,
Thanks for everyones replies to my plaintive calls for help.
Our problem was a hang of the "OpenCursor" call during dynamic
sql execution from Forte 3.0.M.0 to Oracle on NT.
The most useful suggestions included:
* Check for Errors in the SQL
- no errors found. SQL works fine from other clients
* Transaction around the entire piece of code
- already there.
* Ensure that the following line is used:
self.Session.RemoveStatement(statementHandle=dynStatement);
- it was already there.
* Try turning on log flags
Useful Log flags that might be helpful are
trc:db:1 - Cursor operations
trc:db:1:100 - Vendor specific cursor operation tracing
trc:db:1:200 - Checking cursor queues, fetching rows, cursor count
- we still get stuck in the OpenCursor, with no useful
information shown to see where the thread is stuck.
* Increase Cursor Count in Oracle - this was shown
not to be a problem. We did a separate test opening cursors
without closing them, and indeed hit the Oracle cursor limit,
but with this code we did not get back such an exception.
* We also set up tracing within Oracle, and the application proved to
be hanging inside Forte - before it had apparently reached Oracle.
* And a dumpstatus on the partition showed us stuck in the OpenCursor.
* It seems that indeed this problem is one with Forte and its
multithreaded DB Libraries, so our only soution was to revert back
to the traditional partition-based replication of single threaded
DB partitions. It only took a minute to revert back, but this was
disappointing from a hardware resources point of view. We have
not seen the problem again since making this change.
* One other question that came up - indeed 3.0.M.0 is a beta release,
and we are looking to move to 3.0.M.2 shortly. We had to move to M
quickly to resolve an ISAPI problem in L, but plan to move to M.2
as soon as possible.
Thanks again for all the replies!
Ben Macdonald
Xpedior, Inc

@Sybrand - Funny you should mention Larry's boat - it happens to be moored about 200 metres from where I'm sitting here in Cape Town :-)
And yes, I will get in touch with sales for more clarity...
Thanks,
Andreas
*** Update
I called our 'Senior License Management Service Consultant' at Oracle and she confirms that Oracle do NOT take processor multithreading into consideration for licensing purposes.
So, our single quad core, multithreaded processor will be licensed as 4 cores, so will require 4 x 0.5 = 2 CPU licenses.
I guess Larry will have to drink cheaper champagne ;-)
Edited by: Andreas Hess on May 20, 2010 2:41 PM

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If anybody started server in Multi-Thread mode, mail me
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null

Yes, the MTS for TCP protocol does not work. A patch will be
released soon for the production release with the fix for
the MTS problem.
Maturi
Satoshi Hirai (guest) wrote:
: Gennady Saldiga (guest) wrote:
: : I installed Oracle 8.0.5.0.0 on Linux RedHat 5.1
: : But I cann't startup database in multi-threaed mode.
: : When I try to startup DB the errors follow
: : SVRMGR> startup;
: : ORA-00101: invalid specification for system parameter
: : MTS_DISPATCHERS
: : ORA-00102: network protocol
: : (ADDRESS=(PARTIAL=YES)(PROTOCOL=tcp)) cannot be used by
: : dispatchers
: : My configuration files are:
: : listener.ora
: : LISTENER =
: : (ADDRESS_LIST =
: : (ADDRESS= (PROTOCOL= IPC)(KEY= orcl))
: : (ADDRESS= (PROTOCOL= IPC)(KEY= PNPKEY))
: : (ADDRESS= (PROTOCOL= TCP)(Host=
: : pcstar.kharkov.ua)(Port= 1521))
: : SID_LIST_LISTENER =
: : (SID_LIST =
: : (SID_DESC =
: : (GLOBAL_DBNAME= pcstar.kharkov.ua)
: : (ORACLE_HOME= /usr/oracle)
: : (SID_NAME = orcl)
: : (SID_DESC =
: : (SID_NAME = extproc)
: : (ORACLE_HOME = /usr/oracle)
: : (PROGRAM = extproc)
: : STARTUP_WAIT_TIME_LISTENER = 0
: : CONNECT_TIMEOUT_LISTENER = 10
: : TRACE_LEVEL_LISTENER = OFF
: : tnslistener working normally
: : tnsnames.ora
: : extproc_connection_data =
: : (DESCRIPTION =
: : (ADDRESS = (PROTOCOL = IPC)(KEY = orcl))
: : (CONNECT_DATA = (SID = extproc))
: : orcl =
: : (DESCRIPTION =
: : (ADDRESS = (PROTOCOL= TCP)(Host=
: : pcstar.pcstar.kharkov.ua)(Port= 1521))
: : (CONNECT_DATA = (SID = orcl))
: : orcl_BEQ =
: : (DESCRIPTION =
: : (ADDRESS = (PROTOCOL = BEQ)(PROGRAM = /usr/oracle)
: : (argv0 = oracleorcl)
: : (args = '(DESCRIPTION =
: : (LOCAL=YES)(ADDRESS=(PROTOCOL=BEQ)))')
: : (envs =
: : 'ORACLE_HOME=/usr/oracle,ORACLE_SID=orcl')
: : initorcl.ora
: : mts_dispatchers="tcp,1"
: : mts_max_dispatchers=3
: : mts_servers=1
: : mts_max_servers=5
: : mts_service=orcl
mts_listener_address="(ADDRESS=(PROTOCOL=tcp)(Host=pcstar)(Por
: : t=1521))"
: : If anybody started server in Multi-Thread mode, mail me
: : [email protected]
: : Best Regards!
: : Gennady Saldiga
: Hi!
: Same problem occured on my environment (Debian GNU/Linux 2.0).
: But I succeeded to start Multi-thread server on ipc protocol.
: My current configuration file (mts_* in init.ora) as follows:
: mts_dispatchers="ipc,1"
: mts_max_dispatchers=10
: mts_servers=1
: mts_max_servers=10
: mts_service=orcl
: # I confirmed mts_listener_address syntax by manual and
: # v$parameter.
: # Net8 Admn man says: If you have multiple MTS_LISTENER_ADDRESS
: # parameters, they must be adjacent to each other in your
: # initialization file.
mts_listener_address="(ADDRESS=(PROTOCOL=TCP)(host=j-00872)(port=
: 1521))"
: mts_listener_address="(ADDRESS=(PROTOCOL=IPC)(KEY=orcl))"
: So I tested MTS_DISPATCHERS parameter's other syntax.
: The test results are:
: # mts_dispatchers="ipc,1"
: # OK
: # mts_dispatchers="tcp,1"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="TCP,1"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="ipc,1","tcp,1"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="(ADDRESS=(PARTIAL=YES)(PROTOCOL=tcp))"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="(ADDRESS=(PARTIAL=NO)(PROTOCOL=tcp))"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="(ADDRESS=(PARTIAL=YES)(PROTOCOL=ipc))"
: # OK
: # mts_dispatchers="(PROTOCOL=IPC) (DISPATCHERS=3)"
: # OK
: # mts_dispatchers="(PROTOCOL=TCP) (DISPATCHERS=3)"
: # ORA-00101,ORA-00102 occured
: # mts_dispatchers="(ADDRESS=(PROTOCOL=IPC)(KEY=orcl))
: (dispatchers=3)"
: # OK
mts_dispatchers="(ADDRESS=(PROTOCOL=TCP)(host=j-00872)(port=1521)
: ) (dispatcher
: s=3)"
: # ORA-00101,ORA-00102 occured
mts_dispatchers="(description=(ADDRESS=(PROTOCOL=IPC)(KEY=orcl))(
: connect_data=
: (sid=orcl))) (dispatchers=3)"
: # OK
mts_dispatchers="(description=(ADDRESS=(PROTOCOL=TCP)(host=j-0087
: 2)(port=1521)
: )(connect_data=(sid=orcl))) (dispatchers=3)"
: # ORA-00101,ORA-00102 occured
: ### While the test, sometimes ORA-00472 (ORA-00472: PMON
process
: ### terminated with error) occured when instance shutdown.
: ### I think the error reported in another message
: ### on the same thread.
: It seems dispatcher is not binded to tcp protocol adapter.
: Does anybody have more information about Multi-thread server
: using TCP protocol.
: ### Please forgive my bad english.
: Thank you.
: Satoshi Hirai
null

XA & Oracle - Multi-threaded

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Hi,
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Vincent R Figari wrote:
>
Hello all,
I heard through the grapevine that it would be possible
to use Oracle 7.3 multi-threaded support with Forte 3.0G.
(thus making Load-Balancing obsolete in this case)
Has anyone given a try at this assumption ?
If yes, on what platform and what versions ?
Thanks,
Vincent Figari
You don't need to buy Internet access to use free Internet e-mail.
Get completely free e-mail from Juno at http://www.juno.com
Or call Juno at (800) 654-JUNO [654-5866]
To unsubscribe, email '[email protected]' with
'unsubscribe forte-users' as the body of the message.
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package oracle.communications.activation.asap.ace;
import java.util.Iterator;
import java.util.Set;
import java.util.logging.Logger;
import javax.ejb.Stateless;
import com.tangosol.net.NamedCache;
import com.tangosol.util.MapEvent;
import com.tangosol.util.MapListener;
import com.tangosol.util.ValueUpdater;
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import com.tangosol.util.extractor.PofUpdater;
import com.tangosol.util.filter.EqualsFilter;
import com.tangosol.util.filter.LikeFilter;
import com.tangosol.util.filter.LimitFilter;
import com.tangosol.util.processor.UpdaterProcessor;
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NamedCache tokenCache;
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Here is what I am asking!
I have added 2 listeners (Listener A and Listener B) which each listen on for changes made to 2 different token Cache Objects (Token A and Token B).
for (i = 0; i < 2 ; i++) {
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tokenCache.put(tokenAdded.getTokenID(), tokenAdded);
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Why do i observe in my diagnostic messages that only one Listener is invoked at a given point of time.
Which means I see Listener A getting invoked and then once invocation of Listener A is complete I see Listener B bieng invoked.
Ideally I would want both listeners to be invoked simultaneously rather than in a one off fashion.
Here is the code for my token cache Listener
package oracle.communications.activation.asap.ace;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.tangosol.net.CacheFactory;
import com.tangosol.net.NamedCache;
import com.tangosol.util.AbstractMapListener;
import com.tangosol.util.Filter;
import com.tangosol.util.MapEvent;
import com.tangosol.util.MapListener;
import com.tangosol.util.ObservableMap;
import com.tangosol.util.ValueUpdater;
import com.tangosol.util.extractor.PofExtractor;
import com.tangosol.util.extractor.PofUpdater;
import com.tangosol.util.filter.AndFilter;
import com.tangosol.util.filter.EqualsFilter;
import com.tangosol.util.filter.LikeFilter;
import com.tangosol.util.filter.LimitFilter;
import com.tangosol.util.processor.UpdaterProcessor;
public class TokenCacheListener extends AbstractMapListener {
     NamedCache asdlCache;
     NamedCache tokenCache;
     AceCacheFactory cacheFactoryBean = new AceCacheFactory();
     private final int PAGE_SIZE = 1;
     private static Logger logger = Logger.getLogger(ConnectionManager.class
               .getName());;
     * An instance of the JCAModeler EJB, represents the JCA-JNEP
     JCAModeler jcaBean;
     * This is a utility method and prints the tokens cache.
     public String printTokenCache() {
          NamedCache tokenCache = cacheFactoryBean.getCache("tokenCache");
          LikeFilter tokenList = new LikeFilter(new PofExtractor(String.class,
                    Token.STATE), "%", (char) 0, false);
          Set keySet = tokenCache.keySet(tokenList);
          StringBuffer cachedTokenList = new StringBuffer("\n################################## Token(s) Cache ##################################");
          int counter = 1;
          for (Object tokenInCache: keySet) {
               Token tokenObject = (Token) tokenCache.get(tokenInCache.toString());
               cachedTokenList.append("\nS.NO:" + (counter++)
                         + "\t ID:" + tokenInCache.toString()
                         + "\t State:" + Token.tokenToString(tokenObject.getState()));
          cachedTokenList.append("\n####################################################################################");
          return cachedTokenList.toString();
     * This method is a utility method and it prints all the ASDL(s) currently present on the
     * asdlCache.
     private String printASDLCache() {
          NamedCache asdlCache = cacheFactoryBean.getCache("asdlCache");
          LikeFilter asdlList = new LikeFilter(new PofExtractor(String.class,
                              Asdl.NETWORKID), "%", (char) 0, false);
          Set keySet = asdlCache.keySet(asdlList);
          StringBuffer cachedASDLList = new StringBuffer("\n################ ASDL Cache ######## ########");
          int counter = 1;
          for (Object asdlInCache: keySet) {
               cachedASDLList.append("\nS.NO:" + (counter++) + "\t ID:" + asdlInCache.toString());
          cachedASDLList.append("\n################ ASDL Cache ######## ########\n");
          return cachedASDLList.toString();
     public TokenCacheListener() {
     public void checkASDLCache(MapEvent Event) {
     // Not currently used
     public void entryUpdated(MapEvent Event) {
          Token newToken = (Token) Event.getNewValue();
          Token oldToken = (Token) Event.getOldValue();
          logger.info("\n=============================================================================================="
                    + "\nTOKEN CACHE LISTENER"
                    + "\n=============================================================================================="
                    + printTokenCache()
                    + "\n==============================================================================================");
          if ((oldToken.getState() == Token.TOKEN_RESERVED)
                    && (newToken.getState()== Token.TOKEN_AVAILABLE)) {
          String networkID = newToken.getNeID();
          asdlCache = cacheFactoryBean.getCache("asdlCache");
          tokenCache = cacheFactoryBean.getCache("tokenCache");
          EqualsFilter filterNE = new EqualsFilter(new PofExtractor(String.class,Asdl.NETWORKID), networkID);
          LimitFilter limitFilter = new LimitFilter(filterNE, PAGE_SIZE);
          Set removeASDL = asdlCache.keySet(limitFilter);
          Iterator asdlIterator = removeASDL.iterator();
          if (asdlIterator.hasNext()) {
          logger.info(printASDLCache());
          ValueUpdater updater = new PofUpdater(Token.STATE);
          System.out.println("Token ID:" + newToken.getTokenID());
          UpdaterProcessor updaterProcessor = new UpdaterProcessor(updater, Integer.toString(Token.TOKEN_RESERVED));
          tokenCache.invoke(newToken.getTokenID(), updaterProcessor);
          jcaBean = new JCAModeler(tokenCache);
          Object asdlID = asdlIterator.next();
          Asdl provisionAsdl = (Asdl) asdlCache.get(asdlID);
          asdlCache.remove(asdlID);
          jcaBean.provision(provisionAsdl, newToken.getTokenID());
          logger.info(printTokenCache());
          logger.info(printASDLCache());
I only see one instance of this listener alive at any given point of time.
Edited by: 807103 on Nov 3, 2011 1:00 PM
Edited by: 807103 on Nov 3, 2011 1:12 PM

Multi Thread Server over TCP/IP

Multi Thread Server over TCP/IP. Does it work?
In my box it works only over IPC protocol.
null

S C Maturi (guest) wrote:
: Mark Malakanov (guest) wrote:
: : Multi Thread Server over TCP/IP. Does it work?
: : In my box it works only over IPC protocol.
: Mark,
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: Maturi
tcp 0 0 bock.nettek-ll:listener bock.nettek-
llc.co:4196 ESTABLISHED
tcp 0 0 bock.nettek-llc.co:4196 bock.nettek-
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TNS Ping Utility for Linux: Version 8.0.5.0.0 - Production on 07-
JAN-99 18:45:52
(c) Copyright 1997 Oracle Corporation. All rights reserved.
Attempting to contact (ADDRESS=(PROTOCOL=TCP)(HOST=localhost)
(PORT=1521))
OK (440 msec)
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-[ YESNO
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null

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Purush,
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user13335017 wrote:
I have thought of the above solutions as workable, however, it is not. Some exhibited errors are:
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