“Slow” system & ORA-00445: background process “DIAG” did not start after 120 seconds ?
Since I am currently checking all Oracle systems at the customers site, I thought at first sight, that almost all of them are overutilized or wrong configured, because everything seemed so sloooooow… Especially the new logins and creating of the new processes were a way too slow – more than 5 seconds! Sometimes I waited ...
RMAN Duplicate for standby command gets hung while restoring the control file or spfile? Set DISABLE_OOB=on
Today I stumbled upon some mysterious issue whilst trying to duplicate one database. I used the same process and same commands, which are worked fine on other systems. But, today the duplicate command gets hung while restoring spfile on one auxiliary instance. I killed the RMAN session and started it all over again, but without ...
ORA-07445 [mdcgcvxhl()+4677] using Spatial SDO_GEOM.sdo_convexhull = Bug 22886582
After upgrade of one database to 12c, the customer complained, that one application (which uses Spatial & Graph) isn’t working properly. After analysing & tracing it, I found the root cause of it – SDO_GEOM.sdo_convexhull. In some cases, this function crashes the whole application raising ORA-03113: ORA-03113: end-of-file on communication channel Process ID: 22675 Session ...
[Upgrade with DBUA + REMOTE_LISTENER with unresolvable SCAN => Fail] & [crsctl “-unsupported” supports you!]
I played with some troubleshooting tasks during database upgrade and stumbled upon some – how can I describe it? – a new findings for me. I have following environment: 2-node RAC environment with Grid Infrastructure version 12.1.0.2 1 RAC database still running on 11GR2 (11.2.0.3) Note: the parameter REMOTE_LISTENER is empty Scenario: That database should ...
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