Thursday 15 June 2023

Manual Database Upgrade from 11.2.0.4 to 19c(19.16.0.0.0) step by step-Real Time


Manual Database Upgrade from 11.2.0.4 to 19c(19.16.0.0.0) step by step- Real Time


Summary 

We will demonstrate an overview on manually upgrading Oracle database from 11.2.0.4 to 19.16.0.0.0 on Oracle Linux 8 64bit platform.

In this example, the source database version is 11.2.0.4. So we can go for a direct upgrade to

1) Installing Oracle 19.3.0.0 binaries

2) Executing the preupgrade jar tool

3) Performing the preupgrade actions

4) Upgrade the database

5) Perform the postupgrade actions


 Note : There are lot of changes in 19c like – utl_file_dir, streams, oracle multimedia are de-supported,Please do check with your application team before going ahead with your upgrade plan.


Pre-Requisite   for DB Upgrade 19c

1) download Oracle Binaries for 19c  (Linux 64 bit) from edelivery.oracle.com

2) Create new home for 19c

3) Oracle 19c Binary copy at New Oracle Home 

4) cp tns and listner and spfile from old oracle Home to New 19c home

5) Install 19c Binaries

6) Apply Latest patch on 19c (19.16.0.0.0)  N-1


List Of Activity Before Upgrade


Select name,open_mode from v$database

Select banner from v$version;

col comp_name for a45

select comp_id,comp_name,status, version, modified from dba_registry;

Show parameter recovery

Show parameter target

Set Recovery file Destination 

alter system set db_recovery_file_dest='/backup/arch/fra' scope=both;

Set Recovery file Size

alter system set db_recovery_file_dest_size=25G scope=both;

set Retention period

alter system set db_flashback_retention_target=1440;

show parameter java_pool_size

alter system set java_pool_size = 150m scope=spfile;

show parameter processes

alter system set processes=350 scope=spfile;

archive log list

 $ORACLE_HOME/rdbms/admin/emremove.sql script from the target from 19c home

@/oracle/app/19c/dbhome/rdbms/admin/emremove.sql

flashback on 

select flashback_on from v$database;

alter database flashback on;

 create restore point before_upgrade_19c guarantee flashback database;

Check restore point Status

select scn, storage_size, time, name from v$restore_point;

 

Object Status

select count(*),status,owner from dba_objects where status='INVALID' group by status,owner;

select owner,object_name,object_type,status from dba_objects where  status ='INVALID' and owner='SYS';


Materilized  if any must be refreshed completed

SELECT o.name FROM sys.obj$ o, sys.user$ u, sys.sum$ s WHERE o.type# = 42 AND bitand(s.mflags, 8) =8;

check Java component is valid or not

if not Please follow below steps

select dbms_java.longname('TEST') from dual;    

 ORA-29516: Aurora assertion failure: Assertion failure at eox.c:35  ;

 execute sys.dbms_registry.loaded('JAVAVM');

execute sys.dbms_registry.valid('JAVAVM');

alter system set "_system_trig_enabled" = false scope=memory;

alter system set java_jit_enabled=false;

create or replace java system    /

Run the pre-jar file which will generate preupgrade_fixup,postupgrade_fixups and preupgrade logfile. 

Command syntax goes as follows –

[oracle@easydbserver]$ $CURRENT_VERSION_HOME/jdk/bin/java -jar $NEW_VERSION_HOME/rdbms/admin/preupgrade.jar DIR location

eg

/oracle/app/oracle/product/11.2/dbhome_1/jdk/bin/ java -jar /oracle/app/19c/dbhome/rdbms/admin/preupgrade.jar -DIR /FRA

 or

 /oracle/app/product/11.2.0/dbhome/jdk/bin/ java -jar /oracle/app/19c/dbhome/rdbms/admin/preupgrade.jar -DIR /finarch_inst1/FRA




Steps to be follow as per Outcome from pre-upgrade log                                                                                                  

1)      purge recycle bin "purge recyclebin;

2)      purge dba_recylebin;"

3)      Move system.aud$ table to other tablespace or truncate sys.aud$

4)      SELECT count(*) FROM sys.aud$;  

5)      truncate table sys.aud$;


Select owner,object_name ,object_type from dba_objects where object_name like ‘AUD$%’;

JOB Queue Cleanup

alter system set JOB_QUEUE_PROCESSES=0 scope=both;

need to upgrade appex

select count(*) from APEX_030200.WWV_FLOWS where id = 4000; 

Select owner,object_name,object_type,status from dba_objects where owner like ‘APEX’;

Select count(1) from apex_0302200.WWV_FLOWS WHERE ID =4000;


Unzip download apex and run below command


1. Download Oracle APEX

2. Unzip

3. Go into the directory 

4. Connect to the Oracle Database with SQLcl or SQLPlus 

5. Run 1 command:

6. CREATE TABLESPACE apex DATAFILE '/path/to/datafiles/apex01.dbf' SIZE 100M AUTOEXTEND ON NEXT 1M;

8. @apexins.sql APEX APEX TEMP /i/


select comp_name,version,status from dba_registry

SELECT * FROM sys.dba_2pc_pending; "delete from sys.pending_trans$ where local_tran_id ='';

delete from sys.pending_sessions$ where local_tran_id ='';

delete from sys.pending_sub_sessions$ where local_tran_id ='';

commit;"

Remove OLAP Catalog

sqlplus / as sysdba @$ORACLE_HOME/olap/admin/catnoamd.sql

 

uninstall Label Security

 sqlplus / as sysdba @$ORACLE_HOME/rdbms/admin/catnools.sql

Recompile Invalid Objects

?/rdbms/admin/utlrp.sql

Execute Gather State

EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

Run Preupgrade fixup sql

/oracle/preupgrade/preupgrade_fixups.sql

Check Object Status

select count(*),status from dba_objects group by status;

shutdown 11.2 database 

shut immediate


Upgrade Activities- Implementation


set Oracle NEW HOME

export ORACLE_HOME=/oracle/app/oracle/product/19.0.0/dbhome_1

set PATH export PATH=$ORACLE_HOME/bin:$PATH

Create Directory for upgrade

mkdir -p /oracle19c/WHILEUPGRADE1/


Database startup upgrade from 19c Binary 

SQL>startup upgrade

select instance_name,status from v$instance;

Check status of database

select instance_name,status from v$instance; 

Start upgrade using catupgrd  and tail logfile to monitor upgrade

nohup $NEW_ORACLE_HOME/perl/bin/perl $NEW_ORACLE_HOME/rdbms/admin/catctl.pl -l /oracle/WHILEUPGRADE1/ -n 8 $NEW_ORACLE_HOME/rdbms/admin/catupgrd.sql &

or

Nohup /oracle/app/19c/dbhome/perl/bin /oracle/app/19c/dbhome/rdbms/admin/catctl.pl -l /oracle/app/19c/whileupd  -n 8  /oracle/app/19c/dbhome/rdbms/admin/catupgrd.sql &


Post Upgrade Activities                                                                                                    

---------------------

startup database  

sqlplus / as sysdba

startup 

1)      check invalid objects 

select count(*),status from dba_objects where status='INVALID' group by status;

@?/rdbms/admin/utlrp.sql

select count(*),status from dba_objects group by status;

2)      Create post upgrade restore point ;

select flashback_on from v$database;

create restore point after_upgrade_pre_postfixup guarantee flashback database;

select scn, storage_size, time, name from v$restore_point;

3)      Run Postupgrade fixups sql ;

  /FRA/preupgrade/postupgrade_fixups.sql

1)      TIMEZONE Upgrade

SELECT version FROM v$timezone_file;

SELECT PROPERTY_NAME, SUBSTR(property_value, 1, 30) value FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME LIKE 'DST_%' ORDER BY PROPERTY_NAME;

exit

cd !

@utltz_countstats.sql

cd $ORACLE_HOME/rdbms/admin/

@utltz_countstar.sql

cd $ORACLE_HOME/rdbms/admin/

@utltz_upg_check.sql

cd $ORACLE_HOME/rdbms/admin/

@utltz_upg_apply.sql


Post upgrade scripts

 ?/rdbms/admin/utlusts.sql TEXT

 ?/rdbms/admin/catuppst.sql

Recompile Invalid Objects

 ?/rdbms/admin/utlrp.sql 


Post Upgrade Checks                                                                                                        

------------------

"check Invalid Objects; ""col object_name for a40

set lines 999

set pages 999

col object_name for a40

col owner for a30

select object_name,object_type,status,owner from dba_objects where status='INVALID';

 

col object_name for a40

set lines 999

set pages 999

col object_name for a40

col owner for a30

select object_name,object_type,status,owner from dba_objects where status='INVALID' and owner in('SYS','SYSTEM');""

Check Database Components;

col comp_name for a45

select comp_id,comp_name,status, version, modified from dba_registry;

SET LINESIZE 500

SET PAGESIZE 1000

SET SERVEROUT ON

SET LONG 2000000

COLUMN action_time FORMAT A12

COLUMN action FORMAT A10

COLUMN comments FORMAT A30

COLUMN description FORMAT A60

COLUMN namespace FORMAT A20

COLUMN status FORMAT A10 

SELECT TO_CHAR(action_time, 'YYYY-MM-DD') AS action_time,action,status,description,patch_id FROM   sys.dba_registry_sqlpatch ORDER by action_time;


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