By Rocky Swift

TOKYO, May 12 (Reuters) - Technical problems derailedJapan's coronavirus vaccination booking system on Wednesday,compounding frustration over the government's handling of newoutbreaks of infections and an inoculation drive that criticssay has been woefully slow.

The online system to book a vaccine crashed in many placesincluding parts of Tokyo and the western city of Minoh becauseof a global problem with U.S. cloud computing vendorSalesforce.com Inc, public broadcaster NHK reported.

Salesforce chief technology officer Parker Harris said onTwitter that the company was experiencing a "major disruption",later updating to say services had been mostly restored.

"Making an appointment for a vaccination seems to be a tallorder for the elderly, wrote Twitter user @obachan66972352.

"Please consider making it possible to get the vaccinewithout an appointment.

A representative of the health ministry's vaccine office wasnot immediately available when contacted by Reuters.

The ministry has faced numerous technical problemsthroughout the pandemic, from a contact tracing application thatfailed to pass on vital information to a cumbersome databasethat health workers were reluctant to use. urn:newsml:reuters.com:*:nL1N2K90NZ urn:newsml:reuters.com:*:nL4N2GR1EP

Japan has only inoculated 2.8% of its population, the lowestrate among wealthy countries despite an ambitious governmenttarget of giving shots to its 36 million elderly people by July,when the Olympics Games are due to open in Tokyo.

The campaign was initially slow because of tight supplies ofimported doses of Pfizer Inc's PFE.N vaccine but has sincebeen plagued by a shortage of manpower and other logisticalsnags. urn:newsml:reuters.com:*:nL4N2MU0RF urn:newsml:reuters.com:*:nL1N2MM0L6

Taro Kono, the minister in charge of vaccines, has urged thepublic to be patient and to take steps to streamline the bookingprocess.

Christophe Weber, chief executive of Japan's biggestdrugmaker Takeda Pharmaceutical Co 4502.T , acknowledged onTuesday that the country was behind on its inoculation push andneeded to accelerate. urn:newsml:reuters.com:*:nL1N2MY0GM

(Reporting by Rocky SwiftEditing by Robert Birsel) ((rocky.swift@thomsonreuters.com))