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                     ORA-01092 ORA-00604 ORA-04024 While trying to Open the database


Problem:

Error occurred while opening the database in read only/read write,

 ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00604: error occurred at recursive SQL level 1
ORA-04024: self-deadlock detected while trying to mutex pin cursor 0x7C92EC118
Process ID: 14520
Session ID: 1423 Serial number: 25044

Cause: 

The issue is caused due to Unpublished Bug 21799609 - ORA-04024 DEADLOCK ON STARTUP ON SYS.ECOL$ ON LOAD
HISTOGRAMS which has been closed as duplicate of BUG 19469538 - LOADING OF DATA IN ECOL$ TABLE IS NONOPTIMAL
FOR QUERIES

Database was upgraded from 11.2.0.4 to 12.1.0.2

Fixed Version : 12.2.0.1
Solution:

Option 1
In the database, implement the workaround from Bug 21799609 :

SQL> alter system set "_fix_control"='9550277:ON';
Once set try to Open the database

SQL>alter database open read only;
Or

SQL>alter database open ;

Option 2

Check for availability of one off Patch using Patch 19469538 for your Platform and apply the permanent fix for this issue