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Exadata: Warning Cellsrv Rejecting Open Request from Host Due to DB Name Conflict (Doc ID 2060753.1)

Last updated on FEBRUARY 22, 2019

Applies to:

Oracle Exadata Storage Server Software - Version 11.2.2.3.3 to 12.1.2.2.0 [Release 11.2 to 12.1]
Oracle SuperCluster T5-8 Full Rack - Version All Versions to All Versions [Release All Releases]
Oracle SuperCluster M6-32 Hardware - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 Full Rack - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 Half Rack - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

1.  Database cloning (duplicate) process is reporting I/O errors (in the database alert.log) when accessing the ASM disks (Exadata GridDisks) associated to all the CELL Storage Servers:

a. I/O errors accessing the GridDisks in the  <CELL_NAME>03 CELL:

Errors in file /app/oracle/diag/rdbms/ORCL3/ORCL3i1/trace/ORCL3i1_ora_28844.trc:
ORA-15025: could not open disk "o/192.190.35.09;192.190.35.04/DATA_<NAME>_CD_08_<CELL_NAME>03_adm"                
"o/192.190.35.09;192.190.35.04/DATA_<NAME>_CD_08_<CELL_NAME>03_adm"  
WARNING: disk locally closed resulting in I/O error [0xf4]                                                                                
disk locally closed resulting in I/O error [0xf4]      

b. I/O errors accessing the GridDisks in the  <CELL_NAME>02 CELL:

Errors in file /app/oracle/diag/rdbms/ORCL3/ORCL3i1/trace/ORCL3i1_ora_28844.trc:
ORA-15025: could not open disk "o/192.190.35.07;192.190.35.08/DATA_<NAME>_CD_08_<CELL_NAME>02_adm"              
"o/192.190.35.07;192.190.35.08/DATA_<NAME>_CD_08_<CELL_NAME>02_adm"
WARNING: disk locally closed resulting in I/O error [0xf4]                                                                                
disk locally closed resulting in I/O error [0xf4]      

c. I/O errors accessing the GridDisks in the  <CELL_NAME>01 CELL: 

Errors in file /app/oracle/diag/rdbms/ORCL3/ORCL3i1/trace/ORCL3i1_ora_28844.trc:
ORA-15025: could not open disk "o/192.190.35.06;192.190.35.05/DATA_<NAME>_CD_01_<CELL_NAME>01_adm"              
"o/192.190.35.06;192.190.35.05/DATA_<NAME>_CD_01_<CELL_NAME>01_adm"  
WARNING: disk locally closed resulting in I/O error [0xf4]                                                                                
disk locally closed resulting in I/O error [0xf4]

 

2. Previous errors were generated as result of a database cloning (duplicate) process from one RAC cluster to another different RAC cluster (through RMAN).

 

3. Both clusters (source and target) are sharing/using the same Exadata Storage CELLs.

 

4. Whereas, all the CELL servers are generating the following errors (as reported by the Cellsrv process) during the database cloning (duplicate) process:

 


8. Therefore, the I/O errors (reported by the database instance) accessing the griddisks (in all the CELLs) are misleading - i.e., there are no problems at the physical/ASM disks layer.

Changes

 

Cause

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