Sphinx + Oracle : Data source name not found error - oracle

Question

I want to connect to remote oracle database server and index some data from there with sphinx search engine. My OS is ubuntu 16.04 and I havc installed sphinx on it and tested it with local mysql database and everthing was ok (All the data indexed and I could search and results was correct) . I also have installed unixODBC and tested it with isql tool to remote access to oracle database server and every thing was ok, but when I want to index data with indexer command of sphinx this error occure:
sql_connect: [unixODBC][Driver Manager]Data source name not found, and no default driver specified
Here is source block of my sphinx.conf file:
source src2
{
type = odbc
sql_host = hostName
sql_user = user
sql_pass = pass
sql_db = dbname
sql_port = 1521
odbc_dsn = DSN = mydsn; Driver={Oracle};Dbq=hostname:1521/dbname;Uid=user;Pwd=pass
sql_query = \
SELECT tableId, Name \
FROM sampleTable
}
And odbc.ini file:
[mydsn]
Application Attributes = T
Attributes = W
BatchAutocommitMode = IfAllSuccessful
BindAsFLOAT = F
CloseCursor = F
DisableDPM = F
DisableMTS = T
Driver = Oracle
DSN = mydsn
EXECSchemaOpt =
EXECSyntax = T
Failover = T
FailoverDelay = 10
FailoverRetryCount = 10
FetchBufferSize = 64000
ForceWCHAR = F
Lobs = T
Longs = T
MaxLargeData = 0
MetadataIdDefault = F
QueryTimeout = T
ResultSets = T
ServerName = MYDATABASE
SQLGetData extensions = F
Translation DLL =
Translation Option = 0
DisableRULEHint = T
UserID = user
Password = pass
StatementCache=F
CacheBufferSize=20
UseOCIDescribeAny=F
SQLTranslateErrors=F
MaxTokenSize=8192
AggregateSQLType=FLOAT
and odbcinst.ini file :
[Oracle]
Description= ODBC for Oracle
Driver = /opt/oracle/instantclient_12_2/libsqora.so.12.1
Setup =
FileUsage = 1
CPTimeout =
CPReuse = /usr/local/etc/odbcinst.ini

Answer 1

Try
odbc_dsn = DSN=mydsn;
i.e. w/o spaces around = after the DSN and since you have everything else specified in the ini file just the DNS should be enough. You also need only sql_query out of the rest sql_*. Like this:
source src2
{
type = odbc
odbc_dsn = DSN=mydsn;
sql_query = \
SELECT tableId, Name \
FROM sampleTable
}