Actian Corp., a data management solutions company owned by Garnett & Helfrich Capital, has agreed to acquire ParAccel Inc., a Cuptertino, Calif.-based enterprise analytic platform provider. No financial terms were disclosed. ParAccel has raised around $93 million in VC funding from Amazon.com, Menlo Ventures, Mohr Davidow Ventures, Bay Partners, Walden International, Tao Venture Capital Partners and Silicon Valley Bank. Earlier this year, Actian agreed to take Pervasive Software private for around $162 million. www.paraccel.com

Apax Partners is in advanced talks to acquire Italian auto parts distributor Rhiag from Alpha Associes, according to Reuters. It would be the year’s first leveraged buyout of an Italian company, and is expected to be valued in excess of €500 million. www.rhiag.com

Apollo Global Management and Double Eagle Energy have formed a strategic partnership to invest in oil and gas properties in Oklahoma, with a primary focus on the Anadarko and Ardmore Basins. No financial terms were disclosed. www.agm.com

The Carlyle Group is interested in acquiring around a 20% stake in the digital television unit of India’sBharti Airtel, according to the Business Standard. Prior reports suggested that Bain Capital and KKR also have interest in the position, which could be valued at around $200 million. www.carlyle.com

H.I.G. Capital has acquired Pegasus Financial Services, a Dallas–based processor of commissions paid by hotels to travel agencies, from Pegasus Solutions Inc. No financial terms were disclosed.www.pegs.com

Mesisys, a portfolio company of Persistence Capital Partners, has acquired Plexo, a Quebec-based provider of corporate health services. No financial terms were disclosed. www.medisys.com

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