Help me find ssh2 item appears how to solve these anomalies

Beginner ssh2 development, program after myeclips will appear after a few redeploy following exception , how to solve it ?


And this

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Iterator when you iterate data is to modify the operation of the general exceptions caused , Iterrator for using metex lock , your operation is not allowed , , If you have to modify , add one to operate the Iterator remove () method just fine ,
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not understand, can elaborate a little bit?  
http://www.cnblogs.com/frankliiu-java/articles/1759460.html
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integrated into Eclipse Tomcat plug-in process
use this right , free to deploy , over the years has not been plagued by a variety of abnormalities redeployment .
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not understand, can elaborate a little bit?                
http://www.cnblogs.com/frankliiu-java/articles/1759460.html        second exception how to solve , can you help me?   Regarding your second question may be your version is too low due to hibernate . . . . You try to update to the latest version
try. .
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not understand, can elaborate a little bit?                
http://www.cnblogs.com/frankliiu-java/articles/1759460.html        second exception how to solve , can you help me?   I'm not good at this , and you look at this put

http://blog.csdn.net/fengyie007/article/details/1780375
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not understand, can elaborate a little bit?                            
http://www.cnblogs.com/frankliiu-java/articles/1759460.html                second exception how to solve , can you help me?            I'm not good at this , and you look at this put     
    
http://blog.csdn.net/fengyie007/article/details/1780375          
Thank you , you seem to experience and experience in this area is very rich, I salute you !  

solved ? I was a novice . . . Oh
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second exception : out of memory exception
memory overflow , where to hibernate version of the problem ?
spring in tomcat startup , listener will trigger ioc container initialization ,-Xmx to transfer large number of jvm look
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multithreaded access, modify mistake , you willing to be used in class does not support multi-threading. . .
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not understand, can elaborate a little bit?
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not understand, can elaborate a little bit?          
http://www.cnblogs.com/frankliiu-java/articles/1759460.html   second exception how to solve , can you help me?
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not understand, can elaborate a little bit?                      
http://www.cnblogs.com/frankliiu-java/articles/1759460.html            second exception how to solve , can you help me?        I'm not good at this , and you look at this put   
  
http://blog.csdn.net/fengyie007/article/details/1780375  
Thank you , you seem to experience and experience in this area is very rich, I salute you !
------ For reference only -------------------------------------- -
not understand, can elaborate a little bit?                                  
http://www.cnblogs.com/frankliiu-java/articles/1759460.html                    second exception how to solve , can you help me?                I'm not good at this , and you look at this put       
      
http://blog.csdn.net/fengyie007/article/details/1780375                
Thank you , you seem to experience and experience in this area is very rich, I salute you !          
  
solved ? I was a novice . . . Oh     
information you provide helpful to me , I will carefully research studies .
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and version are linked. . I have also encountered this problem . . .