All, I dug further into the sql.bind exception, and I think the problem is occurring at: b = store_funcs.bind_col(tr, c, access); in mvc_bind(). The call has access = 0 which is readonly and the column c exists, but it looks like NULL is returned to b. Could the problem be that I am sitting the the "sys" schema, but I should be placing all of my tables into another one? Thanks, Dave -----Original Message----- From: Anderson, David B [ICG-MKTS] Sent: Tuesday, April 26, 2016 10:49 AM To: users-list Subject: Merge/Remote table causes segfault All, I've been able to isolate the seg-fault in gdb, but am not sure how to proceed. Should I file a bug report? There is a NULL pointer access in q_enqueue_(). The q data pointer is NULL. If I look at the flow inside the flow event d, I see the error: "SQLException:sql.bind:unable to find sys.loan201508(purpose)", so it looks like the root cause is higher up/elsewhere. Dave (gdb) where #0 0x00002b39b92fbb2f in q_enqueue_ (q=0x1c0089e0, d=0x1c095b78) at mal_dataflow.c:156 #1 0x00002b39b92fbbbc in q_enqueue (q=0x1c0089e0, d=0x1c095b78) at mal_dataflow.c:164 #2 0x00002b39b92fdd88 in DFLOWscheduler (flow=0x1c094260, w=0x2b39b96a8e40) at mal_dataflow.c:709 #3 0x00002b39b92fe696 in runMALdataflow (cntxt=0x2b39be9b6328, mb=0x1bf02bd0, startpc=1, stoppc=399, stk=0x1c08b7d0) at mal_dataflow.c:892 #4 0x00002b39b93cad1c in MALstartDataflow (cntxt=0x2b39be9b6328, mb=0x1bf02bd0, stk=0x1c08b7d0, pci=0x1c056ac0) at language.c:147 #5 0x00002b39b92f9077 in runMALsequence (cntxt=0x2b39be9b6328, mb=0x1bf02bd0, startpc=1, stoppc=402, stk=0x1c08b7d0, env=0x1be28a30, pcicaller=0x1c08b710) at mal_interpreter.c:631 #6 0x00002b39b92f9418 in runMALsequence (cntxt=0x2b39be9b6328, mb=0x1bda6560, startpc=1, stoppc=0, stk=0x1be28a30, env=0x1be28a30, pcicaller=0x0) at mal_interpreter.c:743 #7 0x00002b39b92f824c in runMAL (cntxt=0x2b39be9b6328, mb=0x1bda6560, mbcaller=0x0, env=0x1be28a30) at mal_interpreter.c:365 #8 0x00002b39b9318b63 in MALengine (c=0x2b39be9b6328) at mal_session.c:637 #9 0x00002b39b9316ebd in runPhase (c=0x2b39be9b6328, phase=4) at mal_scenario.c:515 #10 0x00002b39b931707b in runScenarioBody (c=0x2b39be9b6328) at mal_scenario.c:559 #11 0x00002b39b9317164 in runScenario (c=0x2b39be9b6328) at mal_scenario.c:579 #12 0x00002b39b9317f74 in MSserveClient (dummy=0x2b39be9b6328) at mal_session.c:439 #13 0x00002b39b9317b8b in MSscheduleClient (command=0x1be20190 "p\001\342\033", challenge=0x2b39c017b0c0 "GJMKUZJ4", fin=0x1a3fdf90, fout=0x1bda6a50) at mal_session.c:319 #14 0x00002b39b93d0464 in doChallenge (data=0x1bd88880) at mal_mapi.c:184 #15 0x00002b39b9b4697b in thread_starter (arg=0x1a3fdf60) at gdk_system.c:458 #16 0x00002b39bb03683d in start_thread () from /lib64/libpthread.so.0 #17 0x000000330ded4fdd in clone () from /lib64/libc.so.6 ... (gdb) down #0 0x00002b39b92fbb2f in q_enqueue_ (q=0x1c0089e0, d=0x1c095b78) at mal_dataflow.c:156 156 q->data[q->last++] = d; (gdb) p *q $17 = { size = 0, last = 0, exitcount = 0, data = 0x0, l = { lock = 1 }, s = { sema = { __size = '\000' , __align = 0 }, name = 0x0 } } (gdb) p d $18 = (FlowEvent) 0x1c095b78 (gdb) p *d $19 = { flow = 0x1c094260, pc = 55, blocks = 0, state = 1, clk = 0, cost = -1, hotclaim = 0, argclaim = 0 } (gdb) p *d->flow $20 = { cntxt = 0x2b39be9b6328, mb = 0x1bf02bd0, stk = 0x1c08b7d0, start = 2, stop = 399, status = 0x1c094fe0, error = 0x2b39cc00edc0 "SQLException:sql.bind:unable to find sys.loan201508(purpose)", nodes = 0x1c09a750, edges = 0x1c09c480, flowlock = { lock = 1 }, done = 0x1c0942d0 }