Two enterprise software companies said the weak economy put a damper on sales in the first quarter ending 31 March.
Sybase's revenue for the quarter is expected to fall in the range of $180m (3115m) to $185m. The pro forma figures exclude amortisation of purchased intangibles, unearned stock-based compensation and restructuring costs.
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Customers are putting purchases on hold because of growing economic uncertainty, especially in financial services and telecommunications, where Sybase does much of its business.
Business in the final week of the quarter was much weaker than expected in North America and will implement several measures to more aggressively manage its cost, said the company.
Application software supplier PeopleSoft also said companies delayed purchases in the quarter. The environment for capital spending grew worse with concerns about the economic impact of the Iraq war.
PeopleSoft's preliminary financial results for the quarter cited revenue in the range of $450m (£287) to $455m, with $370m (£236m) to $375m coming from services and $80m (£51m) to $85m from licences.
PeopleSoft will release its final first-quarter results on 22 April.