System and method for logging transaction records in a computer system

A method for logging transactions in a computer systems the method comprising;

• providing a transaction time limit for transactions, wherein the transaction time limit indicates a time by which the transaction must complete to be valid;
• providing a current time;
• starting a first transaction;
• writing a first record for the first transaction to a log file;
• starting a second transaction;
• writing a first record of the second transaction to the log file;
• starting a third transaction;
• writing a first record of the third transaction to the log file;
• completing the first transaction;
• writing a completion record for the first transaction to the log file, wherein the completion record indicates that the first transaction has completed;
• reading the first record for the first transaction, the first record for the second transaction, the first record for the third transaction and the completion record for the first transaction from the log file;
• writing the completed first transaction to a completed transaction file;
• writing the second transaction and the third transaction to an uncompleted transaction file;
• completing the second transaction;
• writing a completion record for the second transaction to the log file, wherein the completion record indicates that the second transaction has completed
• aborting the third transaction;
• reading the contents of the log file and contents of the uncompleted transaction file;
• determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• writing the completed second transaction to the completed transaction file in response to determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• calculating a transaction elapsed time for the third transaction by subtracting a time stamp of the first record of the third transaction from the current time;
• comparing the transaction elapsed lime of the third transaction to the transaction time limit;
• and
• writing the third transaction to an aborted transaction file when the transaction elapsed time of the third transaction has exceeded the transaction time limits.

A carrier medium comprising program instructions, wherein the program instructions are executable by a machine to implement:

• providing a transaction time limit for transactions, wherein the transaction time limit indicates a time by which the transaction must complete to be valid;
• providing a current time;
• writing a first transaction to a log file;
• writing a second transaction to the log file,
• writing a third transaction to the log file;
• wherein the third transaction includes a transaction start time, wherein the transaction start time indicates a time at which the third transaction began;
• completing the first transaction;
• writing a completion record for the first transaction to the log file, wherein the completion record indicates that the first transaction has completed;
• reading the completed first transaction from the log file;
• reading the second transaction from the log file;
• writing the completed first transaction to a completed transaction file;
• writing the second transaction to an uncompleted transaction file;
• completing the second transaction;
• writing a completion record for the second transaction to the log file, wherein the completion record indicates that the second transaction has completed;
• reading contents of the log file and contents of the uncompleted transaction file;
• determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• writing the completed second transaction to the completed transaction file in response to determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• reading the contents of the log file and contents of the uncompleted transaction file;
• calculating a transaction elapsed time for the third transaction by subtracting a time stamp of the first record of the third transaction from the current time,
• comparing the transaction elapsed time of the third transaction to the transaction time limit.
• writing the third transaction to an aborted transaction file when the transaction elapsed time of third transaction exceeds the transaction time limit.

A system comprising,

• a processing unit;
• a system clock coupled to the processing unit;
• a system memory coupled to the processing unit;
• a data storage coupled to the processing unit;
• wherein the system memory stores program instructions, wherein the program instructions are executable by the processing unit to:
• write a First transaction to a log file in the data storage;
• write a completion record for the first transaction to the log file, wherein the completion record indicates that the first transaction has completed;
• write a second transaction to the log file;
• read the completed first transaction from the log file;
• read the second transaction from the log file;
• write the completed first transaction to a completed transaction file in the data storage;
• write the second transaction to an uncompleted transaction file in the data storage;
• complete the second transaction;
• write a completion record for the second transaction to the log file, wherein the completion record indicates that the second transaction has completed;
• read the contents of the log file and contents of the uncompleted transaction file, wherein the contents of the log file include the completion record for the second transaction, and wherein the contents of the uncompleted transaction file include the second transaction;
• determine that the second transaction from die uncompleted transaction file corresponds to the completion record for the second transaction front the log file;
• write the completed second transaction to the completed transaction file in response to determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• provide a transaction time limit for transactions, wherein the transaction time limit indicates a time by which the transaction must complete to be valid;
• determine a current time by reading the system clock;
• write the third transaction to the log files wherein the third transaction includes a transaction start time, wherein the transaction start time indicates a time at which the third transaction began;
• read the contents of the log file and contents of the uncompleted transaction file;
• calculate a transaction elapsed time for the third transaction by subtracting the current time from the transaction start time;
• compare the transaction elapsed time of the third transaction to the transaction time limit;
• and
• write the third transaction to an aborted transaction file when the transaction elapsed time of the third transaction has exceeded the transaction time limit.

A carrier medium comprising program instructions, wherein the program instructions are executable by a machine to implement:

• providing a transaction time limit for transactions, wherein the transaction time limit indicates a time by which the transaction must complete to be valid;
• providing a current time;
• starting a first transaction;
• writing a first record for the first transaction to a log file;
• starting a second transaction;
• writing a first record for the second transaction to the log file;
• starting a third transaction;
• writing a first record for the third transaction;
• completing the first transaction;
• writing a completion record for the first transaction to the log file, wherein the completion record indicates that the first transaction has completed;
• reading the first record for the first transaction, the first record for the second transaction, the first record for the third transaction and the completion record for the first transaction from the log file;
• writing the completed first transaction to a completed transaction file;
• writing the second transaction and the third transaction to an uncompleted transaction file;
• completing the second transaction;
• writing a completion record for the second transaction to the log file, wherein the completion record indicates that the second transaction has completed;
• reading contents of the log file and contents of the uncompleted transaction file;
• determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file;
• writing the completed second transaction to the completed transaction file in response to determining that the second transaction from the uncompleted transaction file corresponds to the completion record for the second transaction from the log file,
• calculating a transaction elapsed time for the third transaction by subtracting a time stamp of the first record of the third transaction from the current time;
• comparing the transaction elapsed time of the third transaction to the transaction time limit, writing the third transaction to an aborted transaction file when the transaction elapsed time of third transaction exceeds the transaction time limit.