oracle RAC and Tuxedo 10R3 failover test
751034Feb 3 2010 — edited Feb 20 2010Hi all, our projects use oracle 10g rac and tuxedo , and now we are makeing test failover for High Availability .
our experiment enviroment is :
oracle RAC ,10g 10.2.0.4 , two instances ,rac1 rac2, and two DTP services s1 and s2, set s1 and s2 services TAF is basic
tuxedo 10R3 , two nodes ,work in MP model ，use XA access oracle rac database，services have Transaction and not Transaction
OS is linux AS4 U5, 64bits
when 16 clients programs simultaneously and continuously call tuxedo services, any node of oracle rac suddenly down ie Hardware Failures, 16 clients can get correct results, and continue run。but when add clients ,for example add clients to 48, ie when 48 clients programs simultaneously and continuously call tuxedo services, any node of oracle rac suddenly down ie Hardware Failures, most clients can get correct results, and continue run, but some clients ( 3 ~ 10 clients ) can not get reply from calling tuxedo services (insert,delete, update database service), util timeout , and look at tuxedo ULOG ,find these service(can not reply)
are waiting oracle reply.
Can tell me why? for large clients ，some tuxedo and oracle rac parameters must tunes ?