Create MAXDB database

1) Install the DB2 Operator

Ensure the IBM DB2 Operator is installed and available in the OpenShift cluster where MAS is running.

2) Create a new DB2 instance

Open the OpenShift Console.
Navigate to Operators → Installed Operators → DB2 Operator.
Select DB2 Cluster and click Create New Cluster.

3) Create the DB2 cluster using a YAML definition

Obtain the YAML file referenced in the IBM Maximo documentation: IBM Maximo: Migrate MAXDB to RH OpenShift (db2ucmas76-01.yaml)
Open the YAML view in the DB2 Cluster creation screen.
Paste the contents of the YAML file into the editor.
Review and adjust values as required for your environment (namespace, storage classes, resources, etc.).
Click Create to deploy the DB2 cluster.

Copy backup file into Container

1) Define db2 project on openshift

oc project db2u

2) Check pods

oc get pods

3) Copy backup file to the pod

oc cp MAXDB76.zip c-db2u-maxdb-db2u-0:/mnt/backup/MAXDB76.zip

4) Login on container

oc rsh c-db2u-maxdb-db2u-0

5) Extract file and fix permissions

cd /mnt/backup
unzip MAXDB76.zip
chmod a+rw MAX*

List

ls -l
total 7121740
-rw-rw-rw-. 1 db2uadm db2iadm1 7095119872 Sep 13  2022 MAXDB76.0.ctginst1.DBPART000.20220913055916.001
-rw-rw-rw-. 1 db2uadm db2iadm1  197538909 Apr  7 21:15 MAXDB76.zip

6) Change user

su - db2inst1

7) Check backup

db2ckbkp -H /mnt/backup/MAXDB76.0.ctginst1.DBPART000.20220913055916.001

This command is generate the following file: IBM Maximo: Migrate MAXDB to RH OpenShift (db2ckbkp.out)

Restore MAXDB76 backup to MAXDB

This command will export data from backup file

su - db2inst1 

cd /mnt/backup

db2 restore database MAXDB76 redirect generate script restoresql.sql

This command is generate the following file: IBM Maximo: Migrate MAXDB to RH OpenShift (restoresql.sql)

This can help to change parameters on restore.

Restore Database

1) Prepare db2

su - db2inst1

db2 force applications all
db2 terminate
db2 deactivate database MAXDB

2) Start Restore

db2 "RESTORE DATABASE MAXDB76 FROM /mnt/backup TAKEN AT 20220913055916 INTO MAXDB REPLACE EXISTING REDIRECT WITHOUT ROLLING FORWARD WITHOUT PROMPTING"

3) Configure Storage Group

db2 "SET STOGROUP PATHS FOR IBMSTOGROUP ON '/mnt/blumeta0/db2/databases'"

4) Continue the RESTORE

db2 "RESTORE DATABASE MAXDB76 CONTINUE"

5) Activate and verify

db2 "ACTIVATE DATABASE MAXDB"
db2 "CONNECT TO MAXDB"
db2 "LIST TABLESPACES SHOW DETAIL"

Checking restored database

1) Connect to database

db2 connect to MAXDB

2) Verify tablespaces

db2 list tablespaces show detail

3) Verify containers

db2 list tablespace containers for 0 show detail
db2 list tablespace containers for 5 show detail
db2 list tablespace containers for 6 show detail

4) Verify storage group

db2 "select * from syscat.stogroups"
db2 "select * from syscat.storagepaths"

5) Verify data (tables)

db2 "select count(*) from syscat.tables"

db2 "select tabschema, tabname, card from syscat.tables where tabschema not like 'SYS%' fetch first 10 rows only"

Ver também