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Database Crashes With ORA-07445 [oss_desparsify] Errors While Trying An Upgrade From 12c To 19c (Doc ID 2685680.1)

Last updated on NOVEMBER 01, 2023

Applies to:

Oracle Exadata Storage Server Software - Version to [Release 12.2 to 20.0]
Oracle Database - Enterprise Edition - Version to [Release 19]
Information in this document applies to any platform.

Symptoms Oracle Home.
Oracle Solaris on SPARC (64-bit) ~ Super Cluster rack.

Trying to upgrade snapshot clone database from 12c to 19c and when it reaches OPEN MIGRATE mode, immediately database is hitting below ORA 7445 ::

NOTE: Startup the database from original 12c Oracle Home has no issue.

ALTER DATABASE OPEN MIGRATE            <<<<<<<<<<<<<<<<<<<<<<<<<
TMI: adbdrv open database BEGIN 2020-05-11 16:11:31.359846
NOTE: ASMB mounting group 5 (SPARSE)
NOTE: Assigned CGID 0x10032 for group 5
NOTE: ASMB process initiating disk discovery for grp 5 (reqid:0)
NOTE: Assigning number (5,0) to disk (o/;
Starting background process ARC4
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x10] [PC:0xFFFFFFFEFABEEDB8, oss_desparsify()+88] [flags: 0x0, count: 1]
Errors in file /app/oracle/diag/rdbms/testdb/testdb1/trace/testdb1_ora_57189.trc (incident=36681):
ORA-07445: exception encountered: core dump [oss_desparsify()+88] [SIGSEGV] [ADDR:0x10] [PC:0xFFFFFFFEFABEEDB8] [Address not mapped to object] []       <<<<<<<<<<<<<<<<<<<<<<<<<
ARC4 started with pid=97, OS id=58369
Starting background process ARC5
Incident details in: /app/oracle/diag/rdbms/testdb/testdb1/incident/incdir_36681/testdb1_ora_57189_i36681.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
ARC5 started with pid=98, OS id=58399
Starting background process ARC6
Instance terminated by PMON, pid = 51987


Other findings ::

1. ----- Current SQL Statement for this session (sql_id=aps3qh1nhzkjx) -----
select line#, sql_text from bootstrap$ where obj# not in (:1, :2)

2. Main Stack:

  oss_desparsify ksfdss_checkdata ksfdss_read ksfdread kcfrbd1 kcbz_table_scan_read kcbzibmlt kcbzib kcbgtcr ktrget2 kdst_fetch0

3. Snapshot clone databases are resided within SPARSE ASM disk groups.


 Snapshot clone database upgrade from 12c to 19c release.


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