How to access river?

Hi,
I'm new to elasticsearch, so my problem is very basic. I'm trying to access
oracle database via river object. I've already created two different rivers
on elasticsearch server, but I have no idea how to access them. Here is the
list of my rivers:

D:>curl -X POST http://localhost:9200/_river/_search?pretty&q=*
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"hits" : {
"total" : 6,
"max_score" : 1.0,
"hits" : [ {
"_index" : "_river",
"_type" : "my_river_1",
"_id" : "_meta",
"_score" : 1.0, "_source" : { "type" : "jdbc", "jdbc" : {
"driver" : "oracle.jdbc.OracleDriver", "url" :
"jdbc:oracle:thin:@//hostname:1521/service", "user" : "username",
"password" : "userpass", "sql" : "select 1 from dual" }}
}, {
"_index" : "_river",
"_type" : "my_river_1",
"_id" : "_status",
"_score" : 1.0, "_source" :
{"ok":true,"node":{"id":"1IPVVy9uRa2u7mRVlPZrKA","name":"Nathaniel
Essex","transport_address":"inet[/10.132.7.185:9300]"}}
}, {
"_index" : "_river",
"_type" : "my_river_1",
"_id" : "_custom",
"_score" : 1.0, "_source" :
{"jdbc":{"version":1,"digest":"Cl6/6IfJ4FSO1JtXdmochH4booTba2Vq9HClavrMk6s="}}
}, {
"_index" : "_river",
"_type" : "my_river_2",
"_id" : "_meta",
"_score" : 1.0, "_source" : { "type" : "jdbc", "jdbc" : {
"driver" : "oracle.jdbc.OracleDriver", "url" :
"jdbc:oracle:thin:@//hostname:1521/service", "user" : "username",
"password" : "userpass", "sql" : "select 2 from dual" }}
}, {
"_index" : "_river",
"_type" : "my_river_2",
"_id" : "_status",
"_score" : 1.0, "_source" :
{"ok":true,"node":{"id":"1IPVVy9uRa2u7mRVlPZrKA","name":"Nathaniel
Essex","transport_address":"inet[/10.132.7.185:9300]"}}
}, {
"_index" : "_river",
"_type" : "my_river_2",
"_id" : "_custom",
"_score" : 1.0, "_source" :
{"jdbc":{"version":1,"digest":"rqxKjWSzm3pVCn7FeO1+8NMWrmofY7F0OWr12tkYekM="}}
} ]
}
}

Can anyone explain me how to access my_river_2?

Best regards,
Lukasz

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