java.lang.LinkageError: loader constraint violation in interface itable initialization

[govardan_raj]

Dear All ,

Im getting an error shown below on click of download ot PDF hyper link, im using Itext jar file for generating PDF. Initially we had a sever in which this funcationality of generating PDF was working fine , now this server is being replaced by a new server and the basis team had copied all the contents from old server to new server, after coping all the contents ,they asked me to check if everything is fine but im getting this error on click of download to PDF , all other funcationalities are working fine please help me out to solve the below error.

No code is changed , and even pdf is still getting generated in the old sever. Kindly help me out to solve this issue.

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  java.lang.LinkageError: loader constraint violation in interface itable initialization: when resolving method "com.lowagie.text.Document.add(Lcom/lowagie/text/Element;)Z" the class loader (instance of com.sap.engine.services.deploy.server.ApplicationLoader@407464) of the current class, com/lowagie/text/Document, and the class loader (instance of com.sap.engine.services.deploy.server.ApplicationLoader@349353) for interface com/lowagie/text/ElementListener have different Class objects for the type com/lowagie/text/Element used in the signature

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[junwu · Accepted solution]

can you deploy your application again?

[govardan_raj · Accepted solution]

hi Jun Wu,

I  deployed the application many times , even i un-deployed the same application  from SDM and then re-deployed the same dc  but still getting the same error .

[junwu · Accepted solution]

how you use the external lib?

[govardan_raj · Accepted solution]

I have created external library , in which the itext jar file is placed , for this external library as usual practice i have created compilation PP and Assembly PP , and added this external library as used dc.

[junwu · Accepted solution]

how about the ear dc?

your nw is 7.0x?

[govardan_raj · Accepted solution]

im not understanding your question "how about the ear dc" and yes my nw is  

Version: 7.0.14

[junwu · Accepted solution]

if my memory is right, one dc contains the lib and another dc for wrapping and deployment

[govardan_raj · Accepted solution]

yes you are correct one dc contains lib and anothe for wrapping and deployment.

[junwu · Accepted solution]

did you also add dependency to the latter one?

[govardan_raj · Accepted solution]

yes dependency is added with dependency type as build type for the later one

[junwu · Accepted solution]

i believe dependency should be runtime