Linux – Error during upgrade : Oracle 11g to 12c

While upgrading catupgrade.sql, we are getting below error.

Due to errors found during the upgrade process, the post
upgrade actions in catuppst.sql have not been automatically run.

* THEREFORE THE DATABASE UPGRADE IS NOT YET COMPLETE *

1. Evaluate the errors found in the upgrade logs
   and determine the proper action.
   2. Execute the post upgrade script as described in Chapter 3
      of the Database Upgrade Guide.

REASON:
catuppst.sql unable to run in Database: EluxTest Id: 0

ERRORS FOUND: during upgrade CATCTL ERROR COUNT=6

Identifier CATALOG 20-01-27 02:20:04 Script = c1102000.sql
ERROR = [ORA-12801: error signaled in parallel query server P000 ORA-01115: IO error reading block from file (block # )

ORA-01115: IO error reading block from file 2 (block # 215616)

ORA-27072: File I/O error

Additional information: 4

Additional information: 215616

Additional information: 212992

ORA-06512: at line 8
]
STATEMENT = [BEGIN
EXECUTE IMMEDIATE
'create unique index WRH$_EVENT_HISTOGRAM_PK on WRH$_EVENT_HISTOGRAM
(dbid, snap_id, instance_number, event_id, wait_time_milli, con_dbid)
local nologging parallel
tablespace sysaux';
EXCEPTION
WHEN OTHERS THEN IF (SQLCODE = -942) THEN NULL; ELSE RAISE; END IF;
END;]

Tried various solutions mentioned below posted online in various forums, but nothing worked.

• Increased SGA to 6GB
• Altered Data file sysaux01 to AUTOEXTEND OFF
• Altered datafile to ONLINE