Hi @sureshbomm
Note:
There’s no need to update the schema_version in the tables below during a fresh installation, but it might be necessary during an upgrade.
update identityiqah.spt_hist_database_version set schema_version = '8.4-87' where name = 'main':
commit;
update identityiq.spt_database_version set schema_version = '8.4-87' where name = 'main';
commit;
Please refer below comment: on top of these cross check the driver file at ../lib folder and iiq.properties file DB connection details, try to delete temp and work folder then try it out.