Administrator unix

Module: SAP Basis SAP BASIS is a complete administration of the SAP system. SAP BASIS consultant mostly works on SAP administration. From The Installation of the software, maintaining the efficient database, optimizing the system, security of the system etc. is the role of the BASIS consultant. There is always a demand for Good BASIS consultant who understands the System in and out from administration perspective.  Prerequisite for training  Bachelor degree in engineering and computer application (BCA)  Postgraduate degree/diploma (MCA, MCS etc.)  Working experience in related field (Database, UNIX, etc.) would be an added advantage  Training Course Content  Introduction  Introduction to SAP R/3  SAP R/3 Architecture  Central System  Distributed Presentation  2-Tier Configuration  3-Tier Configuration  System Landscape & Flow  Single System Landscape  Two System Landscape  Three System Landscape  Multi System Landscape  Installation of SAP  Installation Concepts on Windows & UNIX and Quick Sizing  Naming Convention, Software Kit, SAP Licensing  Installation Procedure - Windows Application Server for UNIX SAP System  R/3 Directory Structure, Kernel  GUI Administrator  Optimization  Security  Operation Modes  Manual Switching of OP Modes  Exceptional Mode  Monitoring  Profile Maintenance & Parameter Setting  System Profile  Transport Profile  Client Profile  Authorization Profile  User Administration  Creating and Maintaining Master Records, Architecture  Logon and Password Security, Protecting Special Users  Creating and Maintaining Single and Mass Users and User Groups  Copying, Deleting, Locking/Unlocking Users  Explanation of Terms Object Class, Authorization Object, Authorization, Profile  Create/Maintaining Authorization/Profile Manually  Create/Maintaining Roles/Generating Profiles by using PFCG  Client Administration  Client Maintenance  Copying Client within R/3 System (Local)  Copying client between R/3 Systems (Remote)  Export/Import  Protecting Client  Monitoring and Verifying a Client Copy  Deleting Client  Tips and Troubleshooting  Transport Management System  TMS Terminology and Concepts  Configuring TMS and Checking Transport Directory  Configuring Transport Domain, Domain Controller and Group  Configuring Virtual SAP System and Displaying Configuration  Including SAP systems in the Transport Domain  Creating Consolidation and Delivery Routes  Maintaining SAP Systems without Common Transport Directory  Configuring External Systems  Locking and Unlocking TMS for a SAP System  Deleting SAP System from the Transport Domain  Deleting TMS Configuration  Change and Transport System  Releasing and Transporting Change Request and Tasks  Customizing, Workbench, Transport Organizer  Importing Change Requests  Spool Administration  Print related Terminology in OS/SAP Level  Setting Local, Remote and Front-End Printing  Logical and Real Spool Server  Managing Spool Requests using Output Controller  Connecting Output Devices to Window System  SAPLPD, TemSE, Authorization  Patch and Kernel Administration  Checking the Patch, Spam, Kernel levels  Downloading Installing Patches, Kernel  Applying at OS Level, SAPNET, Front-End  Troubleshooting Various Issues  CCMS  Introduction to CCMS  CCMS Monitors  Alert Monitors  Analyzing Alerts and Performance Tuning  Background Processing  Background Dialogs Concept  Defining Jobs  Analyzing Jobs  Maintenance Jobs  Distributed R/3 System  Creating Regular Instance  Creating Logon Groups for Load Balancing  OSS and SNote Concepts  How to Use for Different Purposes  Manually Applying OSS note on SAP Standard Program  SAP Router  Installation of SAP Router  Creating Route Permission Table  Setting Route String Entry for SAP Router  Using Various Administrative Options  Database Management  Introduction to Oracle  Oracle Architecture  Introduction to SAPDBA  Creating Tables and Table Space Adjustment  Database Backup, Restore and Recovery  Performance Tuning  OS, H/W Performance Considerations  Memory, Management  R/3 Buffers, Page Buffers, Extended and Heap Memory, PRIV Mode  System Monitoring  Daily, Weekly, Monthly Tasks  SAP Implementation Strategy  Connectivity between R/3 and BW  BW Architecture  Defining and Assigning Logical Systems  Workbench Administration  SAP NetWeaver  Trainer’s Profile  Working consultants, Module Leads and Project Managers with CMM level 5 companies  Freelancers  Extensive exposure on various projects covering end-to-end implementation, upgrades, rollouts, enhancements, supports etc.  Excellent flair of consulting and training  Course Duration  Flexible training schedule  60+ hours of class room training  Weekdays & Weekend batches  Course Fee  Rs. 30,000 (INR)  System Access  24X7 access to SAP software via internet across globe.  Additional Features:  Fully comprehensive and practical approach in transferring knowledge  Provision of configuration steps  Provision of study material strictly from interview point of view  Comprehensive test towards the end of the course  Preparation for interview  Reformatting of CV  Contact detail  +91-9325793756 (info@learninghub.co.in)

I often get mails from people asking what are the questions generally asked in Weblogic by interviewers. Generally for an Administrator’s positions, in addition to Weblogic questions, there are a lot of Unix questions and a few questions related to process and case handling. These are the important questions that I cover while interviewing. 1. How do you differentiate between a server hang and server crash issue? When a Server crahes, the JAVA process no longer exists. When the Server is hung, it stops responding. We can use the weblogic.ADMIN utilty to ping the server. In case of a hang situation we can take multiple thread dumps and analyze the cause of hang. 2. What can be the various reasons for a server crash? a) Native IO b) SSL Native Libraries c) JVM d) Supported Configuration e) JDBC Driver issue 3. How do you troubleshoot a crash? JVM crash generates a hs_err_pid file. We need to look into the stack trace of the hs_err_pid file . If the thread is from a native io, we need to disable native io. if the stack trace is from the driver, we need to get in touch with the drive team. Quite possibly its a problem with driver. Changing the type of driver can be a workaround. If the thread shows it coming from an optimzed code, we can turn of optimization. If the stack is from native calls of application, its a bug with the application and it has to b modified. 4. Ho do you troubleshoot Server Hang? We can use java weblogic.Admin PING to check if we get a normal response. We need to take multiple thread dumps with kill -3 pid on unix and CTLR Break on Windows. Analyze the thread dump to find the root cause. 5. What can be the reasons of Server hang? Memory leak, databse query taking a long time to return, Deadlock. 6. What is memory leak? Memory leak is when objects are not romved from the heap even when they are not required. 7. What are the various causes for OUT OF MEMORY? a) Insufficient heap size, not able to match the extra load. b) Objects licing too long, like HTTP Sessions. c) Memory leak in application code. d) Full GC not happening due to JVM Bug. 8. How to troubleshoot and overcome such issues? Gather memory data by enabling GC verbose. If its due to Http Session, timing out http session after certain interval might help. Look into the code for jdbc connection handling. Optimizing the heap size according to the load. 9. When does High CPU Usage occur? It occurs when one process or one thread utilizes unexpectedly high proportion of CPU. 10. How to troubleshoot it? In Solaris environment, we need to take pstack and prstack and see what the threads are doing. In Windows we need to use pslist and process explorer. 11. What is Clustering and what is achieved through it? Clustering is the grouping together of servers for the purpose of high availability and scalability. Load balancing and Failover is achieved. 12. How does Cluster Communication Happen? Members of the Cluster communicate over the Cluster Multicast IP and Port by sending periodic heart beat messages. 13. What is the difference between the Sun JVM and BEA JRockit JVM? The most well know JVM is the implementation from Sun. The Sun JVM is called HotSpot. The Sun JVM is shipped in the Java Developer’s Kit (JDK) and Java Runtime Environment (JRE) from Sun. The BEA JRockit JVM from BEA systems is optimized for reliability and performance for server side applications. To achieve this, BEA JRockit JVM uses technologies such as code generation, hot spot detection, code optimization, advanced garbage collection algorithms and tight operating system integration. 14. TUning JVM Parameters. If you have a single processor, single thread machine then you should use the serial collector (default for some configurations, can be enabled explicitly for with -XX:+UseSerialGC). For multiprocessor machines where your workload is basically CPU bound, use the parallel collector. This is enabled by default if you use the -server flag, or you can enable it explicitly with -XX:+UseParallelGC. If you’d rather keep the GC pauses shorter at the expense of using more total CPU time for GC, and you have more than one CPU, you can use the concurrent collector (-XX:+UseConcMarkSweepGC). Note that the concurrent collector tends to require more RAM allocated to the JVM than the serial or parallel collectors for a given workload because some memory fragmentation can occur.

For Red Hat training and certification, one should always choose authorized partners of Red Hat that offer top-notch faculty, world-class infrastructure, and strong industry interface. Red Hat Certifications are different from other IT certifications. To earn a Red Hat certification, one must pass a hands-on, practical exam in which you complete real-world tasks using Red Hat technologies rather than just being asked questions about the technology. Red Hat certification program gives employers a way to find and develop qualified professionals and allows technical professionals to prove their skills and build their careers. Ducat is the authorized Red Hat training partner and rated best among the training partners in India. Ducat offers the following Red Hat certifications to validate the skills and knowledge of IT professionals who use Red Hat products. Red Hat Certified System Administrator RHCSA on RHEL 7 Consists of Two Modules: RH 124 - Red Hat System Administration I(SA I) RH 134 - Red Hat System Administration II (SA II) Red Hat Certified Engineer RHCE on RHEL 7 Consists of Three Modules: RH 124 - Red Hat System Administration I(SA I) RH 134 - Red Hat System Administration II (SA II) RH 254 - Red Hat System Administration III (SA III) We also provide Training in following technologies.... Red Hat Certified Virtualization Administrator (RHCVA) Open Stack Unix Shell Scripting Server Hardening To know more visit:http://www.ducatindia.com/redhattraining/ Thanks & Regards Ducat India A-52, Sector-16 Noida-U.P.-201301 8588026966 / 0120-4646464