My Oracle Support Banner

ORA-7445 [smboQbNxt()+96] When Trying to Create a Unique Index (Doc ID 400745.1)

Last updated on MARCH 22, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2]
Information in this document applies to any platform.
This problem can occur on any platform.


When trying to create a unique index on a table having a DATE column, the following error is raised in the SQL*Plus session:

ORA-03113: end-of-file on communication channel

and on the server, an error similar to the following error is seen in the alert.log:

ORA-07445: exception encountered: core dump [smboQbNxt()+96] [SIGSEGV] [Address not mapped to object] [0x303104000C000A00] [] []

The trace file for the ORA-7445 shows a call stack:

... smboQbNxt ksxb1buf rworofprFastUnpackRow qersoFetch ...

After applying the patch for bug:4655998, an error like the following error is returned instead:

ORA-600 [smboFld2Kb:fixedlen2], [6], [7], [2], [50]

The 4th argument (2) will identify a column being of type DATE (column number starts with zero, so 2 would refer to the third column in the table).




To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.