The Brewers signed Oliva to a minor-league contract Monday that includes an invitation to spring training, Adam McCalvy of MLB.com reports.
The Angels selected Oliva in the second round of the minor-league phase of the Rule 5 draft last week, Jonathan Mayo of MLB.com reports.
Oliva was designated for assignment Thursday.
Oliva was optioned to Triple-A Indianapolis on Sunday.
Oliva was optioned to Triple-A Indianapolis on Saturday, Alex Stumpf of DKPittsburghSports.com reports.
Oliva is out of the lineup for Sunday's game against the Mets.
Oliva went 0-for-2 with a walk in Sunday's 2-0 win over Milwaukee.
The Pirates recalled Oliva from Triple-A Indianapolis on Thursday, Kevin Gorman of TribLive.com reports.
Oliva (oblique) joined Triple-A Indianapolis on Friday, Jason Mackey of the Pittsburgh Post-Gazette reports.
Oliva (oblique) is expected to begin full baseball activities in 4-6 weeks, Kevin Gorman of TribLive.com reports