Transactionally consistent database replay in an environment with connection pooling
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United States of America Patent
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May 7, 2013
Grant Date -
Mar 1, 2012
app pub date -
Aug 27, 2010
filing date -
Aug 27, 2010
priority date (Note) -
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Abstract
A method, apparatus, and computer-readable medium is provided for replaying captured workload data in a database environment with connection pools. A replay system includes a dispatcher that manages a connection pool. In one aspect, the dispatcher selects available connections for sending database commands that are ready to be executed against a database, but prevents from being sent, or holds, commands that are not ready to be executed against the database. Commands may be stored at the dispatcher until the database advances to a state that allows the commands to be executed. In another aspect, the dispatcher may use an available connection to send a command to a database instance even though the command is not ready to be executed, as long as at least a threshold number or percentage of connections remains available.
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