On Fri, 2002-09-27 at 10:09, Marten Feldtmann wrote: > > > Mark Wong schrieb: > > >Hi Thomas, > > > >I repeated this test with a program that forks processes instead of > >creating pthreads. I'll attach this version of the program. > > > >I find that I can establish more than 8 connections without any ODBC > >errors being thrown. I've only tried up to 10 so far. Would this also > >hint at thread handling problems in Linux? > > > > > > > I'm also surprised. I did some tests with IBM VA-Smalltalk and was able > to get > around 50 connections against a local database and the database manager > shows > all my connections. > > Where're exactly the limits within the ODBC driver ? > > > Marten
Marten, Is IBM VA-Smalltalk thread or processed based? One thing I forgot to mention is gdb is telling me chunk_alloc appears to be causing the seg fault. I'll provide a sample of a backtrace I gathered. It doesn't always seg fault on this path though. Something it goes through SQLConnect(), but that also ends at chunk_alloc. #0 chunk_alloc (ar_ptr=0x40349c80, nb=121) at malloc.c:2990 #1 0x40297444 in __libc_malloc (bytes=116) at malloc.c:2811 #2 0x40126516 in sql57k_pmalloc () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #3 0x40126667 in sqlallocat () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #4 0x400f46b7 in pr03mAllocatF () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #5 0x400f5f74 in pr09malloc () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #6 0x400f5cb6 in pr09AddItem () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #7 0x400c5498 in pa30PutError () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #8 0x400cea69 in pa60PutError () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #9 0x400b0f53 in paSQLPrepare () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so #10 0x400b10ec in SQLPrepare () from /opt/sapdb/interfaces/odbc/lib/libsqlod.so -- Mark Wong - - [EMAIL PROTECTED] Open Source Development Lab Inc - A non-profit corporation 15275 SW Koll Parkway - Suite H - Beaverton OR, 97006 (503)-626-2455 x 32 (office) (503)-626-2436 (fax) http://www.osdl.org/archive/markw/ _______________________________________________ sapdb.general mailing list [EMAIL PROTECTED] http://listserv.sap.com/mailman/listinfo/sapdb.general
