How to upgrade EBS(R12.2) DB to 19c Database

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Server Steps: -

Check OS version

cat /etc/os-release

 

Check kernel version

uname -r

 

RPM installation

yum install gdbm-1.10-8.el7.i686

rpm -qa | grep -i

 

             

Kernel Parameter Check

/cat/sysctl.conf

 

Swap space check

Recommended to set DB and apps swap space to on-perm server

/proc/meminfo

 

Domain Name System (DNS) Resolver Parameters Check

/etc/resolv.conf

 

Add etc/hosts entry

Check the ulimit settings in limits.conf values

/etc/security/limits.conf

Ex:-

* hard nofile 65536

* soft nofile 4096

* hard nproc 16384

* soft nproc 2047

* hard stack 16384

 * soft stack 10240


Install the VPN server

Setup firewall

OS User and group creation

Open Firewall port b/w on-perm to OCI

 

19C DB pre upgrade STEPS

·         Run ETCC on application nodes to check for missing patches

·         Validate Application and weblogic/Middle tier patches pre-request patches

 Ref. - Interoperability Notes: Oracle E-Business Suite Release 12.2 with Oracle Database 19c (Doc ID   2552181.1)

·         Run Hcheck (hcheck.sql)script to pre-check 19c upgrade issues

 Oracle E-Business Suite Release 12.2 with Oracle Database 19c (Doc ID 2552181.1)

·         EXECUTE ADGRANTS ON DB NODE 

·         Compile all the invalids 

·         RUN Autoconfig DB/Apps Node

·         Create Initialization parameter file setup

 $ORACLE_HOME/dbs/_initparam.sql and $ORACLE_HOME/dbs/_datatop.txt files.

·        19c DB Home installation

·         Download and apply al needed 19c Patches

·         Create the nls/data/9idata directory  on 19c Home

 $ perl $ORACLE_HOME/nls/data/old/cr9idata.pl

·         Create appsutil.zip and copy it to the database tier

·         Install/Verify JRE 8 in the appsutil

·         Create CDB DB using DBCA

·         Create URL file directory

 Using UTL_FILE_DIR or Database Directories for PL/SQL File I/O in Oracle E-Business Suite   Releases 12.1 and 12.2 (Doc ID 2525754.1)

·         Run the pre upgrade java file and preupgrade_fixups.sql file generated by the previous pre upgrade script step

·         Verify the timezone version and update if needed

·         Purge recycle bin

·         Take Backup before upgrade

·         Run DBUA to upgrade database to 19c and If it is RAC,set cluster_database =false

 

Post upgrade Task: -

·         Recreate 19c env file and setup env

·         Recreate the SPFILE

·         Compile EBS logon trigger

·         Verify key parameters like sec_case_sensitive_logon

·         Execute postupgrade_fixups scripts

·         Check/Correct COMPATIBLE parameters

·         Run Datapatch

·         Create the CDB MGDSYS schema

·         Run adgrants after copying from apps server

·         Gather statistics for the SYS schema and fixed table stats.

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