Sadly, this is not unique to Oakland. Several of the cities I've lived in have been plagued with 911 hold times of 10-20 minutes or more.
In one city, the mayor threatened to put a checklist on the ballot so people could decide which types of emergencies would be responded to, and the top vote-getters would be funded.
In another, a city council member publicly told his constituents "the police are not here to protect you. If you want to be safe, get a gun and a dog."
In Las Vegas for several years recently, the police department stopped responding to traffic crashes unless someone was killed. The insurance companies put pressure on the city to reverse that.
Unfortunately, it seems that all of the "homeland security" money that the feds send to the locals goes into military-grade weapons, and not into basic services like 911 and police patrols.
I would like to see a city sell the tanks it gets from the feds and use the money for 911, and other needed services.