How to identified the patch applied in Oracle Database
Apply the patch is DBA responsibility and we applied it Quarterly as per our GMB plan based on Oracle release patch. You can identified the patch set applied in your database using Oracle opatch utility which will show you the list of all the bug fixed during patching. Sometimes latest patch conflict with the older patch, in that case you must check all the patches installed to the oracle database using opatch lsinventory.
Using opatch lsinventory
[oracle@dbatrainings ~]$ $ORACLE_HOME/OPatch/opatch lsinventory
You can also able to find details using below command.
[oracle@dbatrainings ~]$ $ORACLE_HOME/OPatch/opatch lsinventory -details
Alternate option login as a sysdba and execute command from the SQL prompt to get the patch detail.
[oracle@dbatrainings ~]$ sqlplus / as sysdba
SQL> set serverout on;
SQL> exec dbms_qopatch.get_sqlpatch_status;
If you want to understand information of particular patch ID you can able to get more details.
SQL> select xmltransform(dbms_qopatch.is_patch_installed(‘29494060’),dbms_qopatch.get_opatch_xslt) “Patch installed?” from dual;
Alternate option you are able to find from registry.
SQL> select * from sys.registry$history;
SQL> select * from sys.dba_registry_sqlpatch;
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