Nasty gotcha!
Posted in 1994
This is a fyi for all you informixers out there, send me an email if you run across this one also. The following is a description of the informix bug encountered on the new version of informix (5.02.uc1) OS - SunOS 4.1.3_U1 Online Version 5.02.uc1 Problem: Informix Engine Freezes up. Tbinit waiting on a buffer. Bug # 13587 No verified version it exists in. No solution. Description: After 'upgrading' our online engine to 5.02.uc1 the engine began to hang at various times during the day, usually at least twice a day. The tbcheck/tbstat returned that everything looked ok, except for tbstat -u which gave us the following: RSAM Version 5.02.UC1 -- On-Line (CKPT REQ) -- Up 2 days 00:08:03 -- 32872 Kbytes Users address flags pid user tty wait tout locks nreads nwrites 100019f0 S-----D 29206 root ttyrc 100014f0 0 0 2343 14439 10001a60 ------D 0 root ttyrc 0 0 0 0 0 10001ad0 S-----F 29249 root 100014f0 0 0 0 0 10001b40 S-----F 29250 root 100014f0 0 0 0 0 10001bb0 S-----F 29251 root 100014f0 0 0 0 0 10001de0 S-----F 29256 root 100014f0 0 0 0 0 10001e50 S-----F 29257 root 100014f0 0 0 0 0 10001ec0 S-----F 29258 root 100014f0 0 0 0 0 100020f0 S-B-X-- 11270 informix - 100014f0 0 6 98179 43103 10002160 B---R-- 660 informix - 10a85898 0 7 149 0 100021d0 S-B-X-- 1872 informix - 100014f0 0 2 1 0 Notice that tbinit is waiting on a buffer, this in turn causes the engine to hang. There seemed to be no one circumstance that lead to the incident each time. After calling informix we found out this is bug #13587. Interesting considering this new version was supposed to be bug fixes. Anyhow we are now happily running on 5.00.UC3 again with no problems. -- +----------------------------------------------------------------------------+ | . . | | | ... ... | James Ford ,__o | | ..... ..... | Software Engineer, DBA _-\\_<, | | .. ... .. | Business Systems Integration Group (*)/'(*) | | . . . | Semiconductor Products Sector | | | Mesa, AZ | | Motorola, Inc. | ford@hermes1.sps.mot.com Phone:(602)-655-5872 | +----------------------------------------------------------------------------+ | 'connectionLESS IS MORE' -- Data Broker | +----------------------------------------------------------------------------+