Question about running "Vacuum" through JDBC

[Ying Lu <ying_lu@xxxxxxxxxxxxxxx>]

Greetings,

I tried to "Vacuum table" through JDBC. I got the following errors:

  ERROR: VACUUM cannot run inside a transaction block

Does it mean I should only run vacuum through the command line such as 
"psql>  vacuum TableName "?

Thanks a lot,
Emi

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