Home
Topics
SAP development
SAP Java and J2EE
Resolving JCO_ERROR_CONCURRENT_CALL in JCo

Resolving JCO_ERROR_CONCURRENT_CALL in JCo

How do I resolve the error "JCO_ERROR_CONCURRENT_CALL" when running SAP JCo in a Web application?

Here is the exception report:
com.sap.mw.jco.JCO$Exception: (132) JCO_ERROR_CONCURRENT_CALL: Concurrent call. Connection currently used in another thread.
at com.sap.mw.jco.JCO$Client.execute(Unknown Source)
at com.sap.mw.jco.JCO$Client.execute(Unknown Source)
at com.sap.mw.jco.JCO$Repository.execute(Unknown Source)
at com.sap.mw.jco.JCO$Repository.queryFunctionInterface(Unknown Source)
at com.sap.mw.jco.JCO$Repository.queryFunctionInterface(Unknown Source)
at com.sap.mw.jco.JCO$Repository.getFunctionInterface(Unknown Source)
at com.sap.mw.jco.JCO$BasicRepository.getFunctionTemplate(Unknown Source)

Requires Free Membership to View

Login

By submitting you agree to receive email communications from
TechTarget and its partners. Privacy Policy Terms of Use.

From the looks of the exception, you have inadvertently created a singleton instance of the JCo connection somewhere and are trying to use the same connection at the same time. The best way to resolve this is to use JCo's built-in connection pooling. A JCo connection pool can be setup when the server launches and provide connections to any number of clients connected to the server (depending on the number of connections you make available in the pool). Do a search for "jco connection pool" on SearchSAP.com for tips on how to implement a connection pool in SAP JCo.

More News and Tutorials

Articles

Related glossary terms

Terms for Whatis.com - the technology online dictionary
- requirements stability index (RSI)

This was first published in July 2006

Join the conversationComment

Share

Comments

Results

Contribute to the conversation

All fields are required. Comments will appear at the bottom of the article.

Back to top

More from Related TechTarget Sites

Manufacturing ERP
Oracle
Data Management
Data Management UK
Business Analytics
CRM
Content Management
Financial Applications

Manufacturing ERP
- Early adopters say Internet of Things resets software, business models
  
  In a panel session at SapphireNow 2013, SAP users and a telecom company say sensors are the easy part of making machines talk to each other -- and us.
- Infor customers ponder where legacy ERP fits in new social, Web push
  
  Customers of Infor use its legacy ERP brands that go back decades, but now are being challenged to move to the company's new Web architecture.
- Exploring best-of-breed integrated business applications
  
  Best-of-breed integrated business applications can come with a number of pitfalls.
Oracle
- Domain-specific Oracle master data management
  
  Oracle master data management products are starting to merge various data management hubs, which is a help in particular vertical industries.
- Privileged user management a must for DBAs
  
  Trust, but verify. Ronald Reagan made it popular, and it's certainly relevant for DBAs in today's consolidated, virtualized IT world.
- John Webb: Why the new PeopleSoft applications are big news
  
  Lena Weiner-Bishop catches up with Oracle's vice president of PeopleSoft strategy, who explains the excitement around new PeopleSoft applications.
Data Management
- New BI stack tackles data load at Boston Children's Hospital
  
  Boston Children's Hospital upgraded its business intelligence architecture to boost enterprise reporting, a move that also required retraining users.
- Expanded Hadoop use cases will drive need for new enterprise features
  
  With user interest rising, Hadoop vendors are trying to pave a path to higher adoption with add-ons that target issues holding the technology back.
- Jim Goodnight on SAS in-memory analytics and the data scientist
  
  A podcast Q&A with SAS execs Jim Goodnight and Jim Davis looks at big data enablers, including in-memory analytics, and the role of data scientists.
DataManagement UK
- Big data roundtable webcast: gaining value from big data
  
  Roundtable discussion on business value of big data, chaired by Brian McKenna, Editor, SearchDataManagementUK, and featuring Mike Ferguson, Roxane Edjlali (Gartner), Joshua LeCure (GlaxoSmithKline).
- 2012 training courses: BI, data management, data warehousing
  
  Find out where to hone your business intelligence, data management and data warehouse skills with this list of training courses for 2012.
- Poor data quality: what is dirty data costing UK organisations?
  
  Poor data quality can have serious financial consequences for businesses. Read about the current state of data quality management at UK companies, including dirty data problems.
Business Analytics
- Marketing and advertising remain sweet spots for big data technology
  
  Marketing and advertising are the sweet spots for big data, but those who serve up marketing insights and ad space will need to evolve to survive.
- Strategies for de-cluttering business intelligence dashboard designs
  
  Expert Brian Jordan shows business intelligence managers how to avoid developing dashboards that overwhelm business users with too much information.
- Making mobile BI applications a reality: Key steps to take
  
  In a podcast, BI expert William McKnight discusses best practices and action items for managing deployments of mobile business intelligence tools.
CRM
- ACCE conference honors the best workers in the call center industry
  
  The ACCE conference celebrated its 10th anniversary with the ICMI awards dinner. Find out which companies were recognized for excellence in service.
- Windows 8 operating system a marked change in touchscreen environments
  
  Move aside iOS: Windows 8 operating system could be what turns tablets and smartphones into serious business platforms.
- Mobile technology makes time management challenging
  
  Mobile technology has made it easier to solve problems at the office while we aren't at the office. But all that connectedness could mean more work and less play.
Content Management
- Get 'em ready: Tips for planning a SharePoint 2013 training program
  
  SharePoint is a complex application. But training business users for an upgrade to SharePoint 2013 doesn't have to be a daunting task for IT teams.
- The organization of the future: Not just hybrid IT, but hybrid people
  
  The adoption of hybrid IT approaches creates a need for executives who can both formulate business objectives and assess IT requirements.
- SharePoint technology feels growing pains as 2013 release arrives
  
  SharePoint 2013 adds new features to the collaboration software. But it comes at a time when SharePoint's value is being questioned in some quarters.
Financial Applications
- IaaS business scales faster with Zuora billing software
  
  While a user testified to the benefits of Zuora specialty billing software, an expert said the niche tool is not necessary for all.
- Analytics, global HR hot topics at Bersin conference
  
  In this podcast, associate site and news editor Emma Snider recaps some of the key takeaways from Bersin by Deloitte's Impact 2013.
- Offboarding automation reduces risk, manual labor
  
  With HR's focus on onboarding, the offboarding process often gets short shrift. But making do with checklists and spreadsheets can lead to problems.

All Rights Reserved,Copyright 2000 - 2013, TechTarget