RDBPROD: Entry in Corrupt Page Table but Page Verifies Clean (Doc ID 163319.1)

Last updated on AUGUST 09, 2016

Applies to:

Oracle Rdb Server on OpenVMS - Version 7.0 and later
HP OpenVMS Itanium
HP OpenVMS Alpha
HP OpenVMS VAX

Symptoms

Corrupt Page Table (RMU/SHOW CORRUPT) states there is a page with an invalid checksum.

RMU/VERIFY/ALL on the database reports that an area does have a corrupt page:

RMU-W-PAGCKSBAD, area xxx, page nn
                 contains an invalid checksun
                 expected: xxxxxxxx, found: yyyyyyyy
RMU-E-CORRUPTPG, page nn in area xxx is marked as corrupt


RMU/BACKUP fails with an error:

RMU-E-CORPAGPRES, Corrupt or inconsistent pages are present in area xxx


Verifying the specified page in RMU/ALTER shows that the checksum is valid:

$RMU/ALTER dbname
RMU-I-ATTACH, now altering database "dbname"
RdbALTER> area xxx page nn
RdbALTER> verify
RdbALTER> exit

Cause

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