[2024-05-09 14:50:31] INFO __init__.py:1611 parameters from cmd: host="10.0.4.7", port=2889, user="root", password="Y{z0A)w9f]k)(|/", timeout="0", log-file="upgrade_checker.log"
[2024-05-09 14:50:31] INFO __init__.py:1611 succeed to execute query: select distinct value from GV$OB_PARAMETERS  where name='min_observer_version', rowcount = 1
[2024-05-09 14:50:31] INFO __init__.py:1611 check observer version success, version = 4.2.1.1
[2024-05-09 14:50:31] INFO __init__.py:1611 succeed to execute query: select distinct value from GV$OB_PARAMETERS  where name='min_observer_version', rowcount = 1
[2024-05-09 14:50:31] INFO __init__.py:1611 succeed to execute query: select distinct value from oceanbase.__all_virtual_tenant_parameter_info where name='compatible', rowcount = 1
[2024-05-09 14:50:31] INFO __init__.py:1611 succeed to execute query: select count(*) from oceanbase.__all_tenant, rowcount = 1