Up-grading 12c to 19c

Steps For Upgrading Oracle Database To 19c Using DBUA

Database preinstall 19c

19c software install
Pre-upgrade check
Run the pre-upgrade fixup script
Run utlrp.sql ( to compile invalid objects)
Check database component status
To enable restore , in case of failure, enable flashback option
Start DBUA
Post Check
Updating sqlnet.ora file
Updating compatible parameter post upgrade

install yum install

[root@ranesh ~]# yum install -y https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm

Loaded plugins: refresh-packagekit, security

Setting up Install Process

oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm | 18 kB 00:00

Examining /var/tmp/yum-root-3mPcvL/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm: oracle-database-preinstall-19c-1.0-1.el7.x86_64

Marking /var/tmp/yum-root-3mPcvL/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm to be installed

Resolving Dependencies

–> Running transaction check

—> Package oracle-database-preinstall-19c.x86_64 0:1.0-1.el7 will be installed

–> Finished Dependency Resolution

Dependencies Resolved

=======================================================================================================================================================================

Package Arch Version Repository Size

=======================================================================================================================================================================

Installing:

oracle-database-preinstall-19c x86_64 1.0-1.el7 /oracle-database-preinstall-19c-1.0-1.el7.x86_64 55 k

Transaction Summary

=======================================================================================================================================================================

Install 1 Package(s)

Total size: 55 k

Installed size: 55 k

Downloading Packages:

Running rpm_check_debug

Running Transaction Test

Transaction Test Succeeded

Running Transaction

Installing : oracle-database-preinstall-19c-1.0-1.el7.x86_64 1/1

Verifying : oracle-database-preinstall-19c-1.0-1.el7.x86_64 1/1

Installed:

oracle-database-preinstall-19c.x86_64 0:1.0-1.el7

Complete!

unzip the binary and run runInstaller.sh—create 19c directory and run runinstaller

mkdir -p /oracle/app/oracle/product/19.0.0.0/dbhome_1

./runInstaller.sh

PREUPGRADE CHECK

[oracle@new19c dbhome_1]$ cd jdk/bin/

[oracle@new19c bin]$ java -jar /u01/app/oracle/product/19.0.0/dbhome_1/rdbms/admin/preupgrade.jar TEXT TERMINAL

output

Report generated by Oracle Database Pre-Upgrade Information Tool Version
19.0.0.0.0 Build: 1 on 2020-02-27T19:23:07

Upgrade-To version: 19.0.0.0.0

=======================================
Status of the database prior to upgrade
=======================================
Database Name: PROD
Container Name: prod
Container ID: 0
Version: 12.1.0.2.0
DB Patch Level: No Patch Bundle applied
Compatible: 12.1.0.2.0
  Blocksize: 8192
Platform: Linux x86 64-bit
Timezone File: 18
Database log mode: ARCHIVELOG
Readonly: FALSE
Edition: EE

Oracle Component Upgrade Action Current Status
—————- ————– ————–
Oracle Server [to be upgraded] VALID
JServer JAVA Virtual Machine [to be upgraded] VALID
Oracle XDK for Java [to be upgraded] VALID
Real Application Clusters [to be upgraded] OPTION OFF
Oracle Workspace Manager [to be upgraded] VALID
  OLAP Analytic Workspace [to be upgraded] VALID
Oracle Label Security [to be upgraded] VALID
Oracle Database Vault [to be upgraded] VALID
Oracle Text [to be upgraded] VALID
Oracle XML Database [to be upgraded] VALID
Oracle Java Packages [to be upgraded] VALID
Oracle Multimedia [to be upgraded] VALID
Oracle Spatial [to be upgraded] VALID
Oracle OLAP API [to be upgraded] VALID

==============
BEFORE UPGRADE
==============

REQUIRED ACTIONS
================
1. Set DB_RECOVERY_FILE_DEST_SIZE initialization parameter to at least 4706
MB. Check alert log during the upgrade to ensure there is remaining free
  space available in the recovery area.

DB_RECOVERY_FILE_DEST_SIZE is set at 4560 MB. There is currently 4472 MB
  of free space remaining, which may not be adequate for the upgrade.

Currently:
Fast recovery area : /u01/app/oracle/fast_recovery_area
Limit : 4560 MB
Used : 88 MB
Available : 4472 MB

The database has archivelog mode enabled, and the upgrade process will
  need free space to generate archived logs to the recovery area specified
  by initialization parameter DB_RECOVERY_FILE_DEST. The logs generated
  must not overflow the limit set by DB_RECOVERY_FILE_DEST_SIZE, as that
  can cause the upgrade to not proceed.

RECOMMENDED ACTIONS
===================
2. Upgrade Oracle Application Express (APEX) manually before the database
  upgrade.

The database contains APEX version 4.2.5.00.08. Upgrade APEX to at least
  version 18.2.0.00.12.

Starting with Oracle Database Release 18, APEX is not upgraded
  automatically as part of the database upgrade. Refer to My Oracle Support
Note 1088970.1 for information about APEX installation and upgrades.

3.  (AUTOFIXUP) Gather stale data dictionary statistics prior to database
  upgrade in off-peak time using:

EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

Dictionary statistics do not exist or are stale (not up-to-date).

Dictionary statistics help the Oracle optimizer find efficient SQL
  execution plans and are essential for proper upgrade timing. Oracle
  recommends gathering dictionary statistics in the last 24 hours before
  database upgrade.

For information on managing optimizer statistics, refer to the 12.1.0.2
Oracle Database SQL Tuning Guide.

4.  (AUTOFIXUP) Gather statistics on fixed objects prior the upgrade.

None of the fixed object tables have had stats collected.

Gathering statistics on fixed objects, if none have been gathered yet, is
  recommended prior to upgrading.

For information on managing optimizer statistics, refer to the 12.1.0.2
Oracle Database SQL Tuning Guide.

INFORMATION ONLY
================
5. To help you keep track of your tablespace allocations, the following
AUTOEXTEND tablespaces are expected to successfully EXTEND during the
  upgrade process.

Min Size
  Tablespace Size For Upgrade
———- ———- ———–
SYSAUX 600 MB 717 MB
SYSTEM 780 MB 1126 MB
TEMP 60 MB 150 MB
UNDOTBS1 60 MB 448 MB

Minimum tablespace sizes for upgrade are estimates.

6. Check the Oracle Backup and Recovery User’s Guide for information on how
  to manage an RMAN recovery catalog schema.

If you are using a version of the recovery catalog schema that is older
  than that required by the RMAN client version, then you must upgrade the
  catalog schema.

It is good practice to have the catalog schema the same or higher version
  than the RMAN client version you are using.

ORACLE GENERATED FIXUP SCRIPT
=============================
All of the issues in database PROD
  which are identified above as BEFORE UPGRADE “(AUTOFIXUP)” can be resolved by
  executing the following

SQL>@/u01/app/oracle/cfgtoollogs/prod/preupgrade/preupgrade_fixups.sql

=============
AFTER UPGRADE
=============

REQUIRED ACTIONS
================
None

RECOMMENDED ACTIONS
===================
7. Upgrade the database time zone file using the DBMS_DST package.

The database is using time zone file version 18 and the target 19 release
  ships with time zone file version 32.

Oracle recommends upgrading to the desired (latest) version of the time
  zone file. For more information, refer to “Upgrading the Time Zone File
  and Timestamp with Time Zone Data” in the 19 Oracle Database
Globalization Support Guide.

8. To identify directory objects with symbolic links in the path name, run
$ORACLE_HOME/rdbms/admin/utldirsymlink.sql AS SYSDBA after upgrade.
Recreate any directory objects listed, using path names that contain no
  symbolic links.

Some directory object path names may currently contain symbolic links.

Starting in Release 18c, symbolic links are not allowed in directory
  object path names used with BFILE data types, the UTL_FILE package, or
  external tables.

9.  (AUTOFIXUP) Gather dictionary statistics after the upgrade using the
  command:

EXECUTE DBMS_STATS.GATHER_DICTIONARY_STATS;

Oracle recommends gathering dictionary statistics after upgrade.

Dictionary statistics provide essential information to the Oracle
  optimizer to help it find efficient SQL execution plans. After a database
  upgrade, statistics need to be re-gathered as there can now be tables
  that have significantly changed during the upgrade or new tables that do
  not have statistics gathered yet.

10. Gather statistics on fixed objects after the upgrade and when there is a
  representative workload on the system using the command:

EXECUTE DBMS_STATS.GATHER_FIXED_OBJECTS_STATS;

This recommendation is given for all preupgrade runs.

Fixed object statistics provide essential information to the Oracle
  optimizer to help it find efficient SQL execution plans. Those
  statistics are specific to the Oracle Database release that generates
  them, and can be stale upon database upgrade.

For information on managing optimizer statistics, refer to the 12.1.0.2
Oracle Database SQL Tuning Guide.

ORACLE GENERATED FIXUP SCRIPT
=============================
All of the issues in database PROD
  which are identified above as AFTER UPGRADE “(AUTOFIXUP)” can be resolved by
  executing the following

SQL>@/u01/app/oracle/cfgtoollogs/prod/preupgrade/postupgrade_fixups.sql

==================
PREUPGRADE SUMMARY
==================
/u01/app/oracle/cfgtoollogs/prod/preupgrade/preupgrade.log
/u01/app/oracle/cfgtoollogs/prod/preupgrade/preupgrade_fixups.sql
/u01/app/oracle/cfgtoollogs/prod/preupgrade/postupgrade_fixups.sql

Execute fixup scripts as indicated below:

Before upgrade:

Log into the database and execute the preupgrade fixups
@/u01/app/oracle/cfgtoollogs/prod/preupgrade/preupgrade_fixups.sql

After the upgrade:

Log into the database and execute the postupgrade fixups
@/u01/app/oracle/cfgtoollogs/prod/preupgrade/postupgrade_fixups.sql

Preupgrade complete: 2020-02-27T19:23:07

[oracle@new19c preupgrade]$ ls
checksBuffer.tmp preupgrade_driver.sql
components.properties preupgrade_fixups.sql
dbms_registry_extended.sql preupgrade.log
oracle preupgrade_messages.properties
parameters.properties preupgrade_package.sql
postupgrade_fixups.sql upgrade

[oracle@new19c preupgrade]$ pwd

/u01/app/oracle/cfgtoollogs/prod/preupgrade

sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Thu Feb 27 19:26:51 2020

Connected to:

Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 – 64bit Production

With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> @preupgrade_fixups.sql———excute preupgrade fixup script

Executing Oracle PRE-Upgrade Fixup Script

Auto-Generated by: Oracle Preupgrade Script

Version: 19.0.0.0.0 Build: 1

Generated on: 2020-02-27 19:22:59

For Source Database: PROD

Source Database Version: 12.1.0.2.0

For Upgrade to Version: 19.0.0.0.0

Preup Preupgrade

Action Issue Is

Number Preupgrade Check Name Remedied Further DBA Action

—— ———————— ———- ——————————–

min_recovery_area_size NO Manual fixup required.
apex_manual_upgrade NO Manual fixup recommended.
dictionary_stats YES None.
pre_fixed_objects YES None.
tablespaces_info NO Informational only.

Further action is optional.

rman_recovery_version NO Informational only.

Further action is optional.

The fixup scripts have been run and resolved what they can. However,

there are still issues originally identified by the preupgrade that

have not been remedied and are still present in the database.

Depending on the severity of the specific issue, and the nature of

the issue itself, that could mean that your database is not ready

for upgrade. To resolve the outstanding issues, start by reviewing

the preupgrade_fixups.sql and searching it for the name of

the failed CHECK NAME or Preupgrade Action Number listed above.

There you will find the original corresponding diagnostic message

from the preupgrade which explains in more detail what still needs

to be done.

PL/SQL procedure successfully completed.

INVALID COUNT——check the invalid count

SQL> select count(*) from dba_objects where status=’INVALID’;

COUNT(*)

———-

Check database component status——–check the component, status and version.

SQL> set pagesize500

set linesize 100

select substr(comp_name,1,40) comp_name, status, substr(version,1,10) version from dba_registry order by comp_name;SQL> SQL>

COMP_NAME STATUS VERSION

—————————————- ———– ———-

JServer JAVA Virtual Machine VALID 12.1.0.2.0

OLAP Analytic Workspace VALID 12.1.0.2.0

Oracle Application Express VALID 4.2.5.00.0

Oracle Database Catalog Views VALID 12.1.0.2.0

Oracle Database Java Packages VALID 12.1.0.2.0

Oracle Database Packages and Types VALID 12.1.0.2.0

Oracle Database Vault VALID 12.1.0.2.0

Oracle Label Security VALID 12.1.0.2.0

Oracle Multimedia VALID 12.1.0.2.0

Oracle OLAP API VALID 12.1.0.2.0

Oracle Real Application Clusters OPTION OFF 12.1.0.2.0

Oracle Text VALID 12.1.0.2.0

Oracle Workspace Manager VALID 12.1.0.2.0

Oracle XDK VALID 12.1.0.2.0

Oracle XML Database VALID 12.1.0.2.0

Spatial VALID 12.1.0.2.0

16 rows selected.

SQL> select * from v$timezone_file;

FILENAME VERSION CON_ID

——————– ———- ———-

timezlrg_18.dat 18 0

SQL> SELECT * FROM v$backup WHERE status != ‘NOT ACTIVE’;

no rows selected

SQL> SELECT * FROM v$recover_file;

no rows selected

To enable restore , in case of failure, enable flashback option.——enable flashback

SQL> alter system set db_recovery_file_dest_size=20G scope=both;

System altered.

SQL> alter database flashback on;

Database altered.

SQL> !date

Fri 28 Feb 11:36:42 IST 2020

[oracle@new19c dbhome_1]$ export ORACLE_HOME=/u01/app/oracle/product/19.0.0/dbhome_1

[oracle@new19c dbhome_1]$

[oracle@new19c dbhome_1]$ cd bin/

[oracle@new19c bin]$ ./dbua

We can pause and resume the upgrade during the process also.

cd /u01/app/oracle/cfgtoollogs/VIS/preupgrade@postupgrade_fixup.sql

Post Check

SQL> select comp_id,status from dba_registry;

COMP_ID STATUS —————————— ———–

CATALOG VALID

CATPROC VALID

JAVAVM VALID

XML VALID

CATJAVA VALID

RAC OPTION OFF XDB VALID

OWM VALID

CONTEXT VALID

ORDIM VALID

10 rowss selected.

SQL> select * from v$timezone_file;

FILENAME VERSION CON_ID

timezlrg_32.dat 32 0

Updating

sqlnet.ora file

export ORACLE_HOME=/oracle/app/oracle/product/19.0.0.0/dbhome_1

cd $ORACLE_HOME/network/admin

cat sqlnet.ora

SQLNET.ALLOWED_LOGON_VERSION_SERVER=11

Updating compatible parameter post upgrade

alter system set compatible=’19.0.0′ scope=spfile;

shutdown immediate;

startup

SELECT name, value FROM v$parameter

WHERE name = ‘compatible’;

M Ranesh

http://raneshoracle.blogspot.com and http://raneshoracledba.wordpress.com