Case study 24: Lock and hold
  • Platform: All
  • Sybase ASE version: 12.5.x and higher
  • Background story: One of our developers need to test what would happen if he tries to access a table and the table is locked for some predefined time. These were tests for query timeout.
  • Task: Write a query which is going to hold an exclusive lock on a table for some predefined time.
  • Solution: Here is a query which is going to hold exclusive lock for some predefined time on a table table_name:

    declare @var char(8)
    select @var = "00:00:10" -- time in seconds(10 seconds)
       begin tran
          lock table table_name in exclusive mode
          waitfor delay @var

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