Query/SQL command timeout

Question

Greetings,
I am writing an interface to a product using OCI API's. I have a question about designing this interface.
If we are able to successfully establish connection with Oracle databae and
the query takes long time to execute/OCIStmtExecute(), is there any way to timeout the query and return ?
Can we set a timeout parameter using OCI API's or Oracle instant client configuration files ?
Earlier posts in the forums reveals that there may be no such parameter. I believe this is a fairly common problem and there must be some solution for this or do I need to install any oracle patch ?
Best Regards
Murthy

Answer 1

You should have minimum 1 sec when you use oracle
native
Oracle Bequeath NT Protocol.This is a loopback.But if I set it to 3, 10 or whatever than sqlplus is just hanging and uses 100% CPU.
I have started sqlplus with strace and there is a loop while invoking the pool function.
bind(7, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
getsockname(7, {sa_family=AF_INET, sin_port=htons(32918), sin_addr=inet_addr("127.0.0.1")}, [46909632806928]) = 0
getpeername(7, 0x7fffffb9bd5c, [46909632806928]) = -1 ENOTCONN (Transport endpoint is not connected)
getsockopt(7, SOL_SOCKET, SO_SNDBUF, [-6148700272152420352], [4]) = 0
getsockopt(7, SOL_SOCKET, SO_RCVBUF, [-6148700272152420352], [4]) = 0
fcntl(7, F_SETFD, FD_CLOEXEC) = 0
fcntl(7, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
pipe([8, 9]) = 0
pipe([10, 11]) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x2aaaaccacf30) = 15442
--- SIGCHLD (Child exited) @ 0 (0) ---
rt_sigprocmask(SIG_BLOCK, [PIPE], NULL, 8) = 0
rt_sigaction(SIGPIPE, {0x2aaaabb3c838, ~[ILL ABRT BUS FPE SEGV USR2 XCPU XFSZ SYS RTMIN RT_1], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x2aaaac851bd0}, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [PIPE], NULL, 8) = 0
wait4(15442, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 15442
close(8) = 0
close(11) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
poll([{fd=7, events=POLLIN|POLLRDNORM}, {fd=7, events=0}, {fd=10, events=POLLOUT}], 3, 0) = 0
BTW, what is this Bequeath NT Protocol?