The court failed to reach a decision on Thursday after prison representatives gave conflicting character references for Khordokovsky and the hearing was adjourned until Friday.
Lawyers for Khodorkovsky, who headed what was once the country's largest oil company, filed an appeal on July 16 requesting the former oligarch's early release.
In early July, Russian prosecutors charged Khodorkovsky and his business partner Platon Lebedev, also serving an eight-year jail term for fraud and tax evasion, of laundering $28.3 billion and stealing oil between 1998 and 2004.
Both men were transferred in December 2006 from prison to a pre-trial detention center where they have been remanded until November 2.
Both Khodorkovsky, 45, and Lebedev, 41, have maintained their innocence, with Khodorkovsky claiming his conviction was for political reasons and in retaliation for his support of Russia's opposition movement.
