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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

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As an AS/400 programmer for a growing, dynamic company, you're always facing new challenges. A couple of months ago, you implemented referential integrity and triggers in the Order Entry System to address data integrity needs and to provide more flexibility in managing accounts receivable and special sales promotions.

This month, the challenges continue as your company grows and opens up new markets. It's going to add remote warehouses in Chicago and Dallas to supplement the home office warehouse in New York and establish a remote sales force to service the new markets. Each of the two remote locations will need a small AS/400 to provide support for the warehouse staff and sales force. The inventory application will coordinate inventory control with the home office and the database on each of the remote systems, as illustrated in 1.

This month, the challenges continue as your company grows and opens up new markets. It's going to add remote warehouses in Chicago and Dallas to supplement the home office warehouse in New York and establish a remote sales force to service the new markets. Each of the two remote locations will need a small AS/400 to provide support for the warehouse staff and sales force. The inventory application will coordinate inventory control with the home office and the database on each of the remote systems, as illustrated in Figure 1.

These two additional AS/400s have you unexpectedly plunging headfirst into the world of distributed database. In the past, modifying or developing applications to work with a database that was spread across multiple systems represented a significant amount of complex, unique design and coding effort- especially to ensure a reasonable level of application performance and database integrity across systems.

Distributed Relational Database Architecture Level 2 (DRDA Level 2) offers an alternative to help minimize the performance impact of operating in the distributed database environment; two phase commitment control (two phase commit) can be used to ensure data integrity in the same environment. These are two of the new features of DB2/400, so every AS/400 programmer needs to know how to use them effectively. This article shows you how. It begins by defining DRDA Level 2 and two phase commit at a conceptual level. After that, you'll learn how to use these features of DB2/400 to solve the problems presented by moving into distributed database. Along the way, you'll become familiar with the key concepts you need to understand to effectively use these new database functions.

DRDA Level 2

DRDA Level 2 supports application-directed distributed unit of work (DUW). A unit of work is a single application program transaction that can contain one or more database transactions that are logically related. DRDA Level 2 is called application directed because the application program uses SQL statements to direct or control which database it is working with.

DUW is only available through the SQL interface. It lets DB2/400 connect to, access, and update multiple relational databases within the same unit of work in an application program. When the unit of work is completed, two phase commit can be used to ensure that all databases have been successfully updated.

Unlike DRDA Level 1 (the initial DRDA offering), DRDA Level 2 needs to physically establish a communications session with a remote system only once per application. Once established, the communications session can be logically disconnected and reconnected as required by the application, significantly reducing the overhead required and improving application performance compared to DRDA Level 1. This makes DRDA Level 2 a powerful tool to minimize communication overhead in a distributed database or client/server environment.

Two Phase Commitment Control

Two phase commit lets DB2/400 apply a single application transaction-which may be composed of several database updates-to two or more databases spread across multiple systems, and ensures that all the database updates are completed before committing the changes. If the update to any database is not completed, updates are rolled back from all the databases participating in the transaction. This makes two phase commit a powerful tool to ensure database integrity across multiple systems.

The Challenge: Distributed Inventory Database

With DRDA Level 2 and two phase commit, we can begin to see how to solve the problems of implementing a distributed inventory database. The problems are connecting to, and communicating with, the three AS/400s in the network, and maintaining the inventory database when it is distributed across these three systems.

When a single inventory transaction affects the database on each of the three systems, a communications session has to be established with each system, and the database on each system has to be updated correctly. Then the integrity of the transaction needs to be ensured across all three systems. If the database is correctly updated on the New York and Dallas systems, but there is a communications failure before the Chicago database can be updated, how can the integrity of the database be ensured? To resolve these problems, IBM has now implemented DRDA level 2 and two phase commit in DB2/400.

DRDA Level 2 and two phase commit are often discussed in the same context and are used together in a large number of application programs. Because of their relationship to each other, they are included in the same discussion in this article. However, they are separate functions that can stand alone and be used independently. Let's begin by discussing DRDA Level 2.

DRDA Level 2 Concepts

As discussed earlier in this article, DRDA Level 2 supports DUW, which allows an application program using SQL to connect to and update multiple relational databases within the same unit of work. DUW allows multiple SQL statements within the unit of work, and each SQL statement can be directed to a different database.

Application Requester and Application Server

In all levels of DRDA, SQL statements in an application program residing on a local system request data from a database residing on a remote system. The local system is called the Application Requester (AR) or source system, since it is the source of the SQL statements. The remote system is called the Application Server (AS) or target system, since it is the target of the SQL request from the AR and will serve the request by returning the data that satisfies it. These terms will be used throughout the rest of this discussion. 2 illustrates the concept.

In all levels of DRDA, SQL statements in an application program residing on a local system request data from a database residing on a remote system. The local system is called the Application Requester (AR) or source system, since it is the source of the SQL statements. The remote system is called the Application Server (AS) or target system, since it is the target of the SQL request from the AR and will serve the request by returning the data that satisfies it. These terms will be used throughout the rest of this discussion. Figure 2 illustrates the concept.

DRDA uses SQL statements that originate from an AR to request information from an AS database. DRDA can be used by application programs that contain embedded SQL statements. It can also be used by interactive SQL, Query Manager/400, Query Management/400, and the application programming interfaces(APIs) that access databases for PCs used as workstations. There is no native support (CL commands) for DRDA in DB2/400.

Unit of Work and Remote Unit of Work

To better understand DUW, let's look at unit of work and DRDA Level 1: Remote Unit of Work (RUW). A unit of work is a single transaction from an application program. This transaction can contain one database update or multiple updates that are logically grouped or related. In a commitment control environment, a unit of work is defined as the database updates that occur between COMMIT statements.

DRDA Level 1 supports RUW, which limits the unit of work to one AS database. This means that the application program can be connected to only one AS database at a time. 3 uses your new AS/400 network to illustrate RUW. Note that the transaction from the application program on the AR has several database updates that apply to the AS databases on the Chicago and Dallas systems. RUW limits each unit of work from the AR to a single AS database at a time, so the application transaction in this case has to be split into two separate units of work.

DRDA Level 1 supports RUW, which limits the unit of work to one AS database. This means that the application program can be connected to only one AS database at a time. Figure 3 uses your new AS/400 network to illustrate RUW. Note that the transaction from the application program on the AR has several database updates that apply to the AS databases on the Chicago and Dallas systems. RUW limits each unit of work from the AR to a single AS database at a time, so the application transaction in this case has to be split into two separate units of work.

When the connection is established for the Dallas system, the Chicago system automatically disconnects and ends its communications session with the application on the AR. Each time a connection is made to an AS database, the previous communications session is ended and is disconnected from the application on the AR. A new session is then established for the next AS database. The system resources required to perform these functions can be significant.

Distributed Unit of Work-Application Directed

Because DUW allows an application program to connect to and update multiple relational databases within the same unit of work, it does not end a communications session with an AS database when a connection is made to a different AS database. After the unit of work is completed, two phase commit can be used to ensure that all the databases have been successfully updated. The example for RUW can be changed to illustrate DUW. (See 4.) The application program on the AR applies the same database transactions to the AS databases on the Chicago and Dallas systems. However, unlike RUW, DUW allows a unit of work from the AR to span multiple AS databases, so the application transaction can now be handled as a single unit of work.

Because DUW allows an application program to connect to and update multiple relational databases within the same unit of work, it does not end a communications session with an AS database when a connection is made to a different AS database. After the unit of work is completed, two phase commit can be used to ensure that all the databases have been successfully updated. The example for RUW can be changed to illustrate DUW. (See Figure 4.) The application program on the AR applies the same database transactions to the AS databases on the Chicago and Dallas systems. However, unlike RUW, DUW allows a unit of work from the AR to span multiple AS databases, so the application transaction can now be handled as a single unit of work.

When the connection is made to the Dallas system, the Chicago system is logically disconnected; the physical connection and communications session still exist but are inactive. Under DUW, any communications sessions established with AS databases during a unit of work remain in effect throughout the unit of work, though they are rendered inactive after serving the requested data. Any connection or session can be reactivated by reconnecting to the AS database associated with it. As a result, DUW uses significantly fewer resources than RUW.

Implementation Considerations

When an application program is designed to implement DRDA, the level of DRDA that will be used is specified in a new parameter-RDBCNNMTH-in the Create SQL Program (CRTSQLxxx) command. This parameter has two options: RDBCNNMTH(*RUW)- remote unit of work; and RDBCNNMTH(*DUW)-distributed unit of work (the default value). SQL/400 uses DUW by default and Query Manager has a new feature in V3R1 called a Query Manager Profile that controls the use of DUW and RUW.

Existing DRDA applications may have to be modified to take advantage of DUW. However, the effort will probably be worthwhile because DUW should offer better performance than RUW. This is because of the decrease in system resources required to establish communications sessions.

Now that we have discussed DRDA Level 2 and understand the benefits it provides in a distributed database environment, the next thing to look at is ensuring the integrity of an application transaction in this same environment.

Commitment Control Concepts

As discussed earlier in this article, two phase commit lets DB2/400 apply a single application transaction-which may be composed of several database updates-to two or more databases on multiple systems. It then ensures that all the updates were successfully completed.

To better understand two phase commit, let's look at how single phase commitment control works in conjunction with RUW. Single-Phase Commit was available on earlier versions of the AS/400 database, and is typically used with RUW transactions.

For the purposes of this explanation, let's use the RUW example in 5. The transaction from the application program on the AR has several database transactions that apply to AS databases on the Chicago and Dallas systems. Because RUW limits a unit of work to a single AS database, the application transaction has to be split into two separate units of work. Note that after the SQL statements have been completed for each unit of work, a COMMIT statement is issued to ensure that the database updates have been applied on each AS database.

For the purposes of this explanation, let's use the RUW example in Figure 5. The transaction from the application program on the AR has several database transactions that apply to AS databases on the Chicago and Dallas systems. Because RUW limits a unit of work to a single AS database, the application transaction has to be split into two separate units of work. Note that after the SQL statements have been completed for each unit of work, a COMMIT statement is issued to ensure that the database updates have been applied on each AS database.

Single phase commit cannot ensure the integrity of the entire application transaction because it is composed of two separate units of work, and only a single unit of work can be ensured. If the second unit of work did not complete successfully and was rolled back, the transaction would be in a partially completed state because the first unit of work would have already been committed. To resolve this situation and return the database to its earlier state, the user would have to use journal receiver entries to explicitly remove the database transactions from the Chicago database. Two phase commit and DUW avoid this problem.

Let's look at two phase commit used in conjunction with DUW and see how it ensures the integrity of the entire application transaction. (See 6.) Since DUW is being used, the unit of work can span the AS databases for both Chicago and Dallas. Under two phase commit, only a single COMMIT statement is needed for the entire transaction. The COMMIT statement is issued when the last database update has been applied and the unit of work is completed.

Let's look at two phase commit used in conjunction with DUW and see how it ensures the integrity of the entire application transaction. (See Figure 6.) Since DUW is being used, the unit of work can span the AS databases for both Chicago and Dallas. Under two phase commit, only a single COMMIT statement is needed for the entire transaction. The COMMIT statement is issued when the last database update has been applied and the unit of work is completed.

Two phase commit ensures the completion of the database updates in all the affected AS databases since the entire application transaction is treated as a single unit of work. If a system or resource failure prevents any of the database updates in the unit of work from completing, the updates that have been applied will be rolled back from the affected AS databases automatically.

In the first phase of two phase commit, the AR prepares to perform the commit by asking the AS databases if they have completed their updates and are ready to commit them. If all the affected AS databases respond that they are ready, the second phase occurs and the actual commitment of the database updates takes place on each AS database, as 7 illustrates. If any AS database sends a negative response, the unit of work is rolled back.

In the first phase of two phase commit, the AR prepares to perform the commit by asking the AS databases if they have completed their updates and are ready to commit them. If all the affected AS databases respond that they are ready, the second phase occurs and the actual commitment of the database updates takes place on each AS database, as Figure 7 illustrates. If any AS database sends a negative response, the unit of work is rolled back.

Implementation Considerations

When DB2/400 runs a transaction under two phase commit, it uses journal entries to track the unit of work. Within any unit of work, resynchronization will be required when a resource or system failure occurs during a COMMIT or ROLLBACK operation. When this happens, all database updates in the unit of work will be rolled back if processing has not progressed far enough to make the decision to commit.

Two phase commit is supported by all Distributed Data Management (DDM), DRDA, and CICS/400 applications as well as Intersystem Communication Function (ICF) and Common Programming Interface (CPI-C) communications files. Current applications may have to be modified to take advantage of the facility. Applications need to have one or more commits removed to take advantage of this facility.

Now that you have an understanding of DRDA Level 2 and two phase commit, let's see how they would be used to solve the problems of connecting to and communicating with the three AS/400s in the network and maintaining the inventory database when it is distributed across these three systems.

Advanced Database Functions

8 illustrates how DRDA Level 2 and two phase commit would be implemented within an application program that accesses and updates the inventory databases on multiple systems. Used as illustrated, it solves the problems of connecting to each system in the distributed network and ensures the integrity of the inventory database transactions across the systems.

Figure 8 illustrates how DRDA Level 2 and two phase commit would be implemented within an application program that accesses and updates the inventory databases on multiple systems. Used as illustrated, it solves the problems of connecting to each system in the distributed network and ensures the integrity of the inventory database transactions across the systems.

DUW uses SQL to allow the application on the New York home office system to connect to and update the distributed inventory databases on the New York, Chicago, and Dallas systems within the same unit of work. Under DUW, all communications sessions established remain in effect during the unit of work, though they are rendered inactive after serving the requested data. Any session can be reactivated by reconnecting to the AS database in question. As a result, DRDA Level 2 DUW provides better application performance and uses significantly fewer resources than its predecessor DRDA Level 1 RUW.

Two phase commit lets DB2/400 apply a single application transaction running on the New York home office system (which can be composed of several database updates) to the distributed inventory database on the New York, Chicago, and Dallas systems, and ensures that all the updates were successfully completed. If an update to any database is not completed successfully, updates are automatically rolled back from all the other databases participating in the transaction.

Thus, DRDA Level 2 DUW and two phase commit-two of the new, advanced functions of DB2/400-can be used to design and implement an efficient application solution in the distributed database environment.

Skip Marchesani is the author of DB2/400: The New AS/400 Database. He can be reached through Midrange Computing.


DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 1 Multiple Systems Database

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 1 Demonstrating the Inventory Application

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 2 Application Requester and Application Server

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 3 Remote Unit of Work

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 4 Distributed Unit of Work

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 5 Single Phase Commit and Remote Unit of Work

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 6 DRDA Level 2 and Two Phase Commit

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DRDA Lvl 2 & Two Phase Commitment Cntrl in DB2/400

Figure 7 The Two Phases of Two Phase Commit

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    • The main sources of disk consumption
    • How to monitor temporary storage and QTEMP objects in real time
    • How to monitor objects and libraries in real time and near-real time
    • How to track long-term disk trends

     

     

  • Stop Re-keying Data Between IBM I and Other Applications

    SB_HelpSystems_WC_GenericMany business still depend on RPG for their daily business processes and report generation.Wouldn’t it be nice if you could stop re-keying data between IBM i and other applications? Or if you could stop replicating data and start processing orders faster? Or what if you could automatically extract data from existing reports instead of re-keying? It’s all possible. Watch this webinar to learn about:

    • The data dilemma
    • 3 ways to stop re-keying data
    • Data automation in practice

    Plus, see how HelpSystems data automation software will help you stop re-keying data.

     

  • The Top Five RPG Open Access Myths....BUSTED!

    SB_Profound_WC_GenericWhen it comes to IBM Rational Open Access: RPG Edition, there are still many misconceptions - especially where application modernization is concerned!

    In this Webinar, we'll address some of the biggest myths about RPG Open Access, including:

    • Modernizing with RPG OA requires significant changes to the source code
    • The RPG language is outdated and impractical for modernizing applications
    • Modernizing with RPG OA is the equivalent to "screen scraping"

     

  • Time to Remove the Paper from Your Desk and Become More Efficient

    SB_HelpSystems_WC_GenericToo much paper is wasted. Attempts to locate documents in endless filing cabinets.And distributing documents is expensive and takes up far too much time.
    These are just three common reasons why it might be time for your company to implement a paperless document management system.
    Watch the webinar to learn more and discover how easy it can be to:

    • Capture
    • Manage
    • And distribute documents digitally

     

  • IBM i: It’s Not Just AS/400

    SB_HelpSystems_WC_Generic

    IBM’s Steve Will talks AS/400, POWER9, cognitive systems, and everything in between

    Are there still companies that use AS400? Of course!

    IBM i was built on the same foundation.
    Watch this recorded webinar with IBM i Chief Architect Steve Will and IBM Power Champion Tom Huntington to gain a unique perspective on the direction of this platform, including:

    • IBM i development strategies in progress at IBM
    • Ways that Watson will shake hands with IBM i
    • Key takeaways from the AS/400 days

     

  • Ask the RDi Experts

    SB_HelpSystems_WC_GenericWatch this recording where Jim Buck, Susan Gantner, and Charlie Guarino answered your questions, including:

    • What are the “hidden gems” in RDi that can make me more productive?
    • What makes RDi Debug better than the STRDBG green screen debugger?
    • How can RDi help me find out if I’ve tested all lines of a program?
    • What’s the best way to transition from PDM to RDi?
    • How do I convince my long-term developers to use RDi?

    This is a unique, online opportunity to hear how you can get more out of RDi.

     

  • Node.js on IBM i Webinar Series Pt. 2: Setting Up Your Development Tools

    Profound Logic Software, Inc.Have you been wondering about Node.js? Our free Node.js Webinar Series takes you from total beginner to creating a fully-functional IBM i Node.js business application. In Part 2, Brian May teaches you the different tooling options available for writing code, debugging, and using Git for version control. Attend this webinar to learn:

    • Different tools to develop Node.js applications on IBM i
    • Debugging Node.js
    • The basics of Git and tools to help those new to it
    • Using NodeRun.com as a pre-built development environment

     

     

  • Inside the Integrated File System (IFS)

    SB_HelpSystems_WC_GenericDuring this webinar, you’ll learn basic tips, helpful tools, and integrated file system commands—including WRKLNK—for managing your IFS directories and Access Client Solutions (ACS). We’ll answer your most pressing IFS questions, including:

    • What is stored inside my IFS directories?
    • How do I monitor the IFS?
    • How do I replicate the IFS or back it up?
    • How do I secure the IFS?

    Understanding what the integrated file system is and how to work with it must be a critical part of your systems management plans for IBM i.

     

  • Expert Tips for IBM i Security: Beyond the Basics

    SB PowerTech WC GenericIn this session, IBM i security expert Robin Tatam provides a quick recap of IBM i security basics and guides you through some advanced cybersecurity techniques that can help you take data protection to the next level. Robin will cover:

    • Reducing the risk posed by special authorities
    • Establishing object-level security
    • Overseeing user actions and data access

    Don't miss this chance to take your knowledge of IBM i security beyond the basics.

     

     

  • 5 IBM i Security Quick Wins

    SB PowerTech WC GenericIn today’s threat landscape, upper management is laser-focused on cybersecurity. You need to make progress in securing your systems—and make it fast.
    There’s no shortage of actions you could take, but what tactics will actually deliver the results you need? And how can you find a security strategy that fits your budget and time constraints?
    Join top IBM i security expert Robin Tatam as he outlines the five fastest and most impactful changes you can make to strengthen IBM i security this year.
    Your system didn’t become unsecure overnight and you won’t be able to turn it around overnight either. But quick wins are possible with IBM i security, and Robin Tatam will show you how to achieve them.

  • How to Meet the Newest Encryption Requirements on IBM i

    SB PowerTech WC GenericA growing number of compliance mandates require sensitive data to be encrypted. But what kind of encryption solution will satisfy an auditor and how can you implement encryption on IBM i? Watch this on-demand webinar to find out how to meet today’s most common encryption requirements on IBM i. You’ll also learn:

    • Why disk encryption isn’t enough
    • What sets strong encryption apart from other solutions
    • Important considerations before implementing encryption

     

     

  • Security Bulletin: Malware Infection Discovered on IBM i Server!

    SB PowerTech WC GenericMalicious programs can bring entire businesses to their knees—and IBM i shops are not immune. It’s critical to grasp the true impact malware can have on IBM i and the network that connects to it. Attend this webinar to gain a thorough understanding of the relationships between:

    • Viruses, native objects, and the integrated file system (IFS)
    • Power Systems and Windows-based viruses and malware
    • PC-based anti-virus scanning versus native IBM i scanning

    There are a number of ways you can minimize your exposure to viruses. IBM i security expert Sandi Moore explains the facts, including how to ensure you're fully protected and compliant with regulations such as PCI.

     

     

  • Fight Cyber Threats with IBM i Encryption

    SB PowerTech WC GenericCyber attacks often target mission-critical servers, and those attack strategies are constantly changing. To stay on top of these threats, your cybersecurity strategies must evolve, too. In this session, IBM i security expert Robin Tatam provides a quick recap of IBM i security basics and guides you through some advanced cybersecurity techniques that can help you take data protection to the next level. Robin will cover:

    • Reducing the risk posed by special authorities
    • Establishing object-level security
    • Overseeing user actions and data access

     

     

     

  • 10 Practical IBM i Security Tips for Surviving Covid-19 and Working From Home

    SB PowerTech WC GenericNow that many organizations have moved to a work from home model, security concerns have risen.

    During this session Carol Woodbury will discuss the issues that the world is currently seeing such as increased malware attacks and then provide practical actions you can take to both monitor and protect your IBM i during this challenging time.

     

  • How to Transfer IBM i Data to Microsoft Excel

    SB_HelpSystems_WC_Generic3 easy ways to get IBM i data into Excel every time
    There’s an easy, more reliable way to import your IBM i data to Excel? It’s called Sequel. During this webinar, our data access experts demonstrate how you can simplify the process of getting data from multiple sources—including Db2 for i—into Excel. Watch to learn how to:

    • Download your IBM i data to Excel in a single step
    • Deliver data to business users in Excel via email or a scheduled job
    • Access IBM i data directly using the Excel add-in in Sequel

    Make 2020 the year you finally see your data clearly, quickly, and securely. Start by giving business users the ability to access crucial business data from IBM i the way they want it—in Microsoft Excel.

     

     

  • HA Alternatives: MIMIX Is Not Your Only Option on IBM i

    SB_HelpSystems_WC_GenericIn this recorded webinar, our experts introduce you to the new HA transition technology available with our Robot HA software. You’ll learn how to:

    • Transition your rules from MIMIX (if you’re happy with them)
    • Simplify your day-to-day activities around high availability
    • Gain back time in your work week
    • Make your CEO happy about reducing IT costs

    Don’t stick with a legacy high availability solution that makes you uncomfortable when transitioning to something better can be simple, safe, and cost-effective.

     

     

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  • Backup and Recovery on IBM i: Your Strategy for the Unexpected

    SB HelpSystems SC 5413Robot automates the routine tasks of iSeries backup and recovery, saving you time and money and making the process safer and more reliable. Automate your backups with the Robot Backup and Recovery Solution. Key features include:
    - Simplified backup procedures
    - Easy data encryption
    - Save media management
    - Guided restoration
    - Seamless product integration
    Make sure your data survives when catastrophe hits. Try the Robot Backup and Recovery Solution FREE for 30 days.

  • Manage IBM i Messages by Exception with Robot

    SB HelpSystems SC 5413Managing messages on your IBM i can be more than a full-time job if you have to do it manually. How can you be sure you won’t miss important system events?
    Automate your message center with the Robot Message Management Solution. Key features include:
    - Automated message management
    - Tailored notifications and automatic escalation
    - System-wide control of your IBM i partitions
    - Two-way system notifications from your mobile device
    - Seamless product integration
    Try the Robot Message Management Solution FREE for 30 days.

  • Easiest Way to Save Money? Stop Printing IBM i Reports

    SB HelpSystems SC 5413Robot automates report bursting, distribution, bundling, and archiving, and offers secure, selective online report viewing.
    Manage your reports with the Robot Report Management Solution. Key features include:

    - Automated report distribution
    - View online without delay
    - Browser interface to make notes
    - Custom retention capabilities
    - Seamless product integration
    Rerun another report? Never again. Try the Robot Report Management Solution FREE for 30 days.

  • Hassle-Free IBM i Operations around the Clock

    SB HelpSystems SC 5413For over 30 years, Robot has been a leader in systems management for IBM i.
    Manage your job schedule with the Robot Job Scheduling Solution. Key features include:
    - Automated batch, interactive, and cross-platform scheduling
    - Event-driven dependency processing
    - Centralized monitoring and reporting
    - Audit log and ready-to-use reports
    - Seamless product integration
    Scale your software, not your staff. Try the Robot Job Scheduling Solution FREE for 30 days.

  • ACO MONITOR Manages your IBM i 24/7 and Notifies You When Your IBM i Needs Assistance!

    SB DDL Systems 5429More than a paging system - ACO MONITOR is a complete systems management solution for your Power Systems running IBM i. ACO MONITOR manages your Power System 24/7, uses advanced technology (like two-way messaging) to notify on-duty support personnel, and responds to complex problems before they reach critical status.

    ACO MONITOR is proven technology and is capable of processing thousands of mission-critical events daily. The software is pre-configured, easy to install, scalable, and greatly improves data center efficiency.