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Querying Hot Standby Parameters 
You query the values of the hot standby parameters. You can also find out which server within the cluster is currently defined as the master component (CURRENT_NODE).
You have the server authorization ParamRead, ParamCheckWrite, or ParamFull.
hss_getnodes
You receive information about the hot standby system.
hss_getnodes
OK
HS_STORAGE_DLL libhsscopy
OFFICIAL_NODE hotel_official
CURRENT_NODE genua
HS_NODE_001 genua
HS_NODE_002 parma
See also:
Example: How to Set Up a Hot Standby System
Database Administration documentation: Special Database Parameters.
