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C2180-188 exam Dumps Source : IBM WebSphere Lombardi Edition V7.2 - BPM Program Management

Test Code : C2180-188
Test appellation : IBM WebSphere Lombardi Edition V7.2 - BPM Program Management
Vendor appellation : IBM
: 38 actual Questions

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IBM IBM WebSphere Lombardi Edition



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C2180-188 exam Dumps Source : IBM WebSphere Lombardi Edition V7.2 - BPM Program Management

Test Code : C2180-188
Test appellation : IBM WebSphere Lombardi Edition V7.2 - BPM Program Management
Vendor appellation : IBM
: 38 actual Questions

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IBM WebSphere Lombardi Edition V7.2 - BPM Program Management

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IBM Certified Associate BPM Program Manager | killexams.com actual questions and Pass4sure dumps

This vendor-specific Certification is Offered By:IBM CorporationArmonk, NY USAPhone: 914-499-1900Email: This email address is being protected from spambots. You requisite JavaScript enabled to view it.

Skill Level: Foundation                          Status: Active

Low Cost: Not available               

Summary:For individuals who demonstrate the basic learning and ability to successfully discharge basic role or job related tasks associated with an IBM software product, solution, or related technology.

Initial Requirements:You must pass the IBM BPM Blueprint: IBM WebSphere Lombardi Edition (V 7.1), Program Management exam ($200). The exam consists of 40 questions and has a 75 minute time limit. A passing score of 70% is required. Training is available but not required.

Continuing Requirements:None specified

See complete Ibm Certifications

Vendor's page for this certification


Exclusive Interview: Lombardi CTO Phil Gilbert on effectual BPM | killexams.com actual questions and Pass4sure dumps

On January 26, IBM announced the nigh of its acquisition of Lombardi Software, a provider of commerce Process Management (BPM) products aimed at streamlining workflow and automating commerce processes.  At IBM repercussion 2010, it was announced that the Lombardi family of products had been officially incorporated into the IBM BPM product portfolio (Lombardi Blueprint has been renamed to IBM BPM Blueprint; Lombardi Teamworks is now IBM WebSphere Lombardi Edition.)

DZone caught up with Lombardi CTO Phil Gilbert at IBM repercussion to learn more about the role of BPM in software development, industry trends that are driving BPM adoption, and how these trends are shaping the Lombardi-IBM product roadmap. 

DZone:  Architects and developers are perhaps more confidential with the concept of ‘workflow’ than they are BPM.  How does workflow relate to BPM?

Phil:  So workflow is a component of BPM and I would sing that the biggest difference is that workflow is workflow. It is the automated execution of tasks. BPM includes that, but more to the point, what BPM does is it really strives to give the transparency and the visibility into what's going on in those workflows. That becomes as much a fragment of the BPM solution as the workflow itself. They requisite to shine a flashlight on these, what one of their customer's calls, the hidden factories in their businesses. You can acquire a hidden factory that's fully automated with workflow. What BPM tries to execute is say, “Yeah, workflow is a fragment of it, and you're going to collect a workflow system in your BPMS, but more to the point, you're going to collect the ability to provide visibility into the tasks, and visibility into the process performance that a workflow engine doesn't give you.”

DZone:  At the project level, what can software architects execute during the design facet to better facilitate effectual process management?

Phil:  So their view is very simple. If you are modeling for execution, you should live modeling in a modeling environment, that has autochthonous execution behind it.

If you're modeling in something that then gets transformed into code, you're kindhearted of in the extinct world, because at some point, you're going to proceed straight into that code, and you're going to edit it, and it's not going to drudgery back in that modeling environment again. So I believe the number one change that is going to occur pervasively, and it's already happened with Lombardi Edition, is if you're modeling for execution, complete of those models live in a repository, and are shared in a system that directly executes that process model. That process model then has linkages to underlying services, that may live people services, or they may live rule services, or whatever they might be, the integration points. But that process model ought to live modeled in an execution ready environment. If you execute that, then you're going to really drastically move the economics of your progress cycle.

DZone:  How execute Cloud-based environments move BPM deployments?

Phil:  Well, it's tough, because if you really execute processes that matter they're always integrated. People are still a itsy-bitsy bit leery of having Cloud based environments integrated into their on-premise systems. We’re starting to see some breakthroughs there but it's very early in that space.

Right now on the BPMS side, we're still seeing a tough preference for on premise solutions. On the Blueprint side, Blueprint is offered in the Cloud. One of the reasons it's offered in the Cloud is because commerce people find that that is the easiest course to proceed there.

There's no friction from IT. The systems are smooth to access. They're used to going to Salesforce.com, they're used to going to Linked-in and now they proceed to Blueprint. So for the unintegrated productivity fragment of BPM, infatuation the early definition of process models, the Cloud is changing everything. On the automation side of BPM, the workflow and visibility side, we're still seeing a preponderance of companies staying with the on premise deployments.

DZone:  How acquire the Lombardi products been incorporated into the IBM product portfolio?

Phil:  So there's actually two Lombardi products. Lombardi Blueprint is now IBM BPM Blueprint. That is their cloud-based offering for discovering and documenting processes. It's a very commerce friendly tool. It basically takes the early fragment of requirements gathering that commerce people used to execute in Word or PowerPoint and it structures them and makes them more explicit.

The larger offering, which is their complete BPM platform, used to live called Lombardi Teamworks; it's now called IBM WebSphere Lombardi Edition. So it's the Lombardi Edition of Webshpere. It comes bundled with WebSphere and DB2 Express. They back it cease to end. That's really their complete Enterprise class BPMS.

DZone:  How has the role of the commerce analyst changed with respect to improvements in BPM technology?

Phil:  The role of the commerce analyst in their first decade at BPM has probably been the role that's changed more than any other that we've seen. One of the roles of the commerce analyst is actually to save more drudgery onto the commerce people. I believe it's a mistake to believe that agile progress is only about IT developing applications differently. They also acquire to change the course that their customers, their internal commerce customers give us requirements. That probably seems to live a subtle difference, but it's actually the longest pole in the tent in terms of gaining the actual efficiencies of BPM. The commerce analyst therefore becomes as much of a change agent in nurturing their commerce people along this maturity path, as they execute at providing the technical skills of interviewing and translating requirements.

It's a fascinating role. We're seeing it change quite a bit, but they really requisite to change the behavior of their commerce customers. By the way, from what I've seen over these ultimate 10 years, they want to change. They just don't know how to change. Blueprint's a noteworthy site to proceed to execute that.

DZone:  Are there any trends you’re seeing around BPM adoption?

Phil:  More. They identified a trend about a year and a half ago. They call it moving from project to program. Typically the course these things start, BPM projects are typically funded completely out of commerce budget, and the commerce doesn't really want to fund huge infrastructure projects anymore. BPM typically moves one project at a time for a while. After successes under your belt, companies proceed through this, a bit flips in the company's intellect and they start moving from project to program. Now they've got enough projects, there has been enough money spent that they've actually built a bit of an infrastructure and then the goal becomes, “Ok, how execute they programatize this?

How execute they execute these projects at ever increasing accelerate and at scale instead of doing serially one project every 60 or 90 days? How execute they execute four projects at a time every 60 or 90 days?”

So that's really been the change. More and more of their customers acquire been moving from project to program. That presents its own set of governance issues and what acquire you.

DZone:  What does the product roadmap witness infatuation for the Lombardi suite of products?

Phil:   We're really excited about what we're bringing out now. It doesn't sound infatuation a actual innovative thing, but they are very proud of how setup and maintenance is done, on Teamworks, and so they believe we're the first application out there, that has a one‑click installer of Teamworks, which is middleware, on top of WebSphere and on top of DB2. It is a black box to everybody, you acquire the power of that entire platform, and it is the easiest installation and upgrade. Customers who are used to dealing with middleware and application servers and databases, complete of that smart has been taken away.

So on the Lombardi Edition, we're just super proud of how smooth they acquire made the installation of a pretty complicated set of middleware in complex computing environments, and of course with Blueprint there's no setup at all, and there's no maintenance at all. They really focus on complete aspects. This ease of exercise that the Lombardi Edition brings, is not just in the developer experience. It is in every aspect of the ownership, and the maintenance, and the administration of this middleware platform. They want to build every single job easier.

DZone:  Where can people proceed to learn more about the product, and I guess even provide contributions and feedback?

Phil:  Cool. For the time being www.lombardi.com is a noteworthy site to go. You can also see this stuff on the IBM website. So if you search IBM for Lombardi Edition, you can execute that. If you want a free Lombardi Blueprint account, for a crucible period, you can proceed blueprint.lombardi.com, and you can collect the best BPM, the most successful BPM modeler on the planet, in about 30 seconds.

 


Java Developer's Journal Feature: "Deadlocks in J2EE" | killexams.com actual questions and Pass4sure dumps

In the example, the updateBatchStatus fashion makes a "RequiresNew" EJB call to actually update the batch_status database table so the status change is immediately visible, even though the effects of the current transaction aren't yet visible. The call to executeUpdate isn't an EJB call, so it executes in the very transaction as the comfort of bulkLoadData.

As described, this code will intuition a deadlock even in the absence of concurrency. When bulkLoadData calls the executeUpdate method, it updates an existing database row, which involves acquiring a write-lock on that row. The nested EJB call to updateBatchStatus will execute on a divorce database connection and try to execute a very similar query, but it will obscure because it can't acquire the necessary write-lock. From the database's perspective, this second connection will live allowed to proceed as soon as the first connection's transaction is committed or rolled back, which is why the database doesn't detect this as a deadlock. The VM, however, won't allow the call to bulkLoadData to complete before each call to updateBatchStatus completes, so they acquire a deadlock.

This sample shows one update blocking another update, so it causes a deadlock on any database. If the initial update query was a simple select query instead, this sample would only intuition deadlocks on databases that exercise lock-based concurrency control, where one connection's read-lock can obscure another connection from acquiring a write-lock. In any case, a deadlock of this character is neither timing-dependent nor load-dependent, and the thread dump will exhibit one Java thread waiting for a database response, but that thread will live associated with two energetic database connections. And one of those database connections will live idle, but blocking the other connection.

This scenario has many subtle variations, where more than one thread and more than two database connections may live involved. For example, the outer EJB call's database connection may acquire acquired a database lock that blocks another unrelated database connection from proceeding, but that unrelated database connection has acquired a lock that blocks the nested EJB call's database operation. This particular case is timing-dependent, and will exhibit several Java threads waiting for database responses. At least one of those Java threads will live associated with two energetic database connections.

Cross-Resource Deadlock #3: JVM Locks Crossed with Database LocksA third deadlock scenario occurs when mixing database locks with JVM locks. In this case, one thread holds a database lock and is trying to acquire a JVM lock (trying to enter a synchronized block), and another thread holds that JVM lock and is trying to acquire a database lock. Again, the database sees one connection blocking another, but nothing is stopping that connection from proceeding, so it won't detect a deadlock. The JVM sees one thread inside a synchronized obscure and another trying to enter, so even if the JVM could detect deadlocks and wield them somehow, it wouldn't detect this case.

For an sample that illustrates this deadlock scenario, account a simple (flawed) read-through cache. This cache is a HashMap backed by a database table. If a cache hit occurs, it will simply revert the value from the HashMap; on a cache miss however, it will read the value from the database, add it to the HashMap, and revert it as shown in Listing 2.

It's a simple read-through cache. Note that the get() fashion is synchronized, since they access a non-thread safe container, and they want the containsKey/put combination to live atomic in the case of a cache miss.

This cache is fairly straightforward: the contract is that if they change the data in the table backing the cache, they should call clearCache(), so the cache can avoid handing back stale data. The resulting cache misses will repopulate the cache appropriately.

Let's now account some code that changes this data and clears the cache:

public void updateData(String key, String value) {    executeUpdate("update cache_table set value='" + value +       "' where key='" + key + "'");    SimpleCache.getInstance().clearCache();}

In a simple case, this will drudgery with no problems. However, on a database that uses lock-based concurrency control, the query in updateData will obviate the select query in queryForValue from executing, because the update statement will acquire acquired a write-lock that prevents the select query from acquiring a read-lock on the very row. If the timing is just right, one thread can try to read a given value out of the cache and collect a cache miss while another thread updates that value in the database. If the database executes the update statement first, it will obscure the select statement from continuing. However, the thread executing the select statement came through the synchronized collect method, so it has acquired the lock on the SimpleCache. For the thread in updateData to return, it has to call clearCache(), but it can't acquire the lock (clearCache() is synchronized).

When dealing with an instance of this scenario, there will live one Java thread waiting for a response from the database, and one waiting to acquire a JVM lock. Each thread will live associated with a database connection, with one connection blocking the other. The fix is to avoid doing database operations while holding JVM locks: the get() fashion of their SimpleCache could live rewritten infatuation this:

public demur get(String key) {    synchronized(this) {       if (cache.containsKey(key)) {          revert cache.get(key);       }    }    demur value = queryForValue(key);    synchronized(this) {       cache.put(key, value);    }    revert value;}

Since they now know that this deadlock case can happen, they can add a check to their queryForValue fashion to try to avoid the deadlock condition by using Thread.holdsLock():

private demur queryForValue(String key) {      assert(!Thread.holdsLock(this));      revert executeQuery(...);}

While Thread.holdsLock() can live useful in this case, it only works if they know which locks we're specifically worried about. It would live useful to acquire a similar fashion that could determine whether the current thread holds any JVM locks. Then, any piece of code that made any kindhearted of RPC call, database access, etc., could hurl an exception or log a warning to argue that these operations can live Dangerous while holding a JVM lock.

Note: even though we've fixed the deadlock problem in this example, it's still flawed because the cache is cleared before updateData's transaction has been committed. If a cache miss happens after the clearCache call but before updateData's transaction is committed, the cache will load the extinct data because the unique data isn't visible yet. The fix here is to clear the cache only after the changes acquire been committed. commemorate that this would only occur in an MVCC database; in a lock-based database, the pending update would obscure the cache's read, so the cache would read the remedy value after the update's transaction was committed.

Rules of ThumbThese guidelines should succor you avoid these problems, or at least diagnose and fix them if they execute happen.

  • Keep your transactions short and simple.
  • Understand the locking behavior of your database (and your transaction isolation level).
  • Assume any database access has a desultory of failing with a database deadlock, and retry correctly.
  • Don't update any non-transactional state (in-memory state, caches, etc.) until after the transaction has completed.
  • Make certain resource pools are great enough for your peak concurrency.
  • Try not to acquire multiple resources at the very time. If you must, acquire them in the very order each time.
  • Learn how to collect a complete thread dump from your application server and a list of database connections from your database (including which connections are blocked by each), and how to know which Java thread each energetic database connection is associated with. The easiest course to understand the mapping between Java threads and database connections is to add some logging to your connection pool access code.
  • When making nested EJB calls, understand which ones will exercise the very database connection as the caller, and which ones will exercise unique connections. Even if the nested call runs in the very global transaction, it may still exercise a different database connection, and this can intuition cross-resource deadlocks.
  • Avoid making database calls and EJB calls, or doing other off-JVM operations while holding JVM locks. exercise assert(!Thread.holdsLock(...)) if there are specific JVM locks you're concerned about to obviate future code changes from violating this rule unintentionally.
  • ConclusionCross-resource deadlocks in a J2EE application can live a astronomical problem - they can intuition the entire application to grind to a halt. They can also live difficult to isolate and fix, especially if developers aren't confidential with how to anatomize a deadlocked environment. The scenarios we've discussed should succor you understand a few common deadlocks, and give you some view of what to witness for. Even better, the rules of thumb we've outlined should give you a few conventions to supervene in your code to avoid problems infatuation this altogether.

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