You can use the wsadmin tool and scripting to manage active and prepared transactions that might need administrator action.
In normal circumstances, transactions should run and complete (commit or roll back) automatically, without the need for intervention. However, in some circumstances, you might have to resolve a transaction manually. For example, you might want to roll back a transaction that is stuck polling a resource manager that you know will not become available again in the required time frame.
For more information about the TransactionService and Transaction MBeans, see the application programming interface (API) documentation.
The following script is an example of how to use the TransactionService and Transaction MBeans to work with manual transactions. Run the script only against an application server, and not against the deployment manager or node agent.
Example Jacl script:
# get the TransactionService MBean set servicembean [$AdminControl queryNames type=TransactionService,*] # get the Transaction MBean set mbean [$AdminControl queryNames type=Transaction,*] set input 0 while {$input >= 0} { # invoke the listManualTransactions method set tranManualList [$AdminControl invoke $servicembean listManualTransactions] if {[llength $tranManualList] > 0} { puts "----Manual Transaction details---------------" set index 0 foreach tran $tranManualList { puts " Index= $index tran= $tran" incr index } puts "----End of Manual Transactions ---------------" puts "Select index of transaction to commit/rollback:" set input [gets stdin] if {$input < 0} { puts "No index selected, exiting." } else { set tran [lindex $tranManualList $input] set commaPos [expr [string first "," $tran ]-1] set localTID [string range $tran 0 $commaPos] puts "Enter c to commit or r to rollback Transaction $localTID" set input [gets stdin] if {$input=="c"} { puts "Committing transaction=$localTID" $AdminControl invoke $mbean commit $localTID } if {$input=="r"} { puts "Rolling back transaction=$localTID" $AdminControl invoke $mbean rollback $localTID } } } else { puts "No Manual transactions found, exiting" set input -1 } puts " " }
Working with manual transactions: example Jython script.
import sys def wsadminToList(inStr): outList=[] if (len(inStr)>0 and inStr[0]=='[' and inStr[-1]==']'): tmpList = inStr[1:-1].split(" ") else: tmpList = inStr.split("\n") #splits for Windows or Linux for item in tmpList: item = item.rstrip(); #removes any Windows "\r" if (len(item)>0): outList.append(item) return outList #endDef servicembean = AdminControl.queryNames("type=TransactionService,*" ) mbean = AdminControl.queryNames("type=Transaction,*" ) input = 0 while (input >= 0): tranList = wsadminToList(AdminControl.invoke(servicembean, "listManualTransactions" )) tranLength = len(tranList) if (tranLength > 0): print "----Manual Transaction details---------------" index = 0 for tran in tranList: print " Index=" , index , " tran=" , tran index = index+1 #endFor print "----End of Manual Transactions ---------------" print "Select index of transaction to commit/rollback:" input = sys.stdin.readline().strip() if (input == ""): print "No index selected, exiting." input = -1 else: tran = tranList[int(input)] commaPos = (tran.find(",") -1) localTID = tran[0:commaPos+1] print "Enter c to commit or r to rollback transaction ", localTID input = sys.stdin.readline().strip() if (input == "c"): print "Committing transaction=", localTID AdminControl.invoke(mbean, "commit", localTID ) #endIf elif (input == "r"): print "Rolling back transaction=", localTID AdminControl.invoke(mbean, "rollback", localTID ) #endIf else: input = -1 #endelse #endElse else: print "No transactions found, exiting" input = -1 #endElse print " " #endWhile
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