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Jessica Qiu

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Top Stories by Jessica Qiu

Recently a development team met some difficulties in data source computation when developing iReport reports. After the use of esProc for cross database computation, the problem is resolved. This is a project payment progress report, as part of a project management system. It's based on an Oracle database. The reports needs to present the project name, payment amount, contract value, payment progress (in percentage), and name of the project manager, etc., for all ongoing projects. Amount these the first 3 items contributes to the difficulties met by the development team. Note that the project payment record is stored in accounting system, rather than the Oracle database used by the development team. The accounting system is built on MSSQL database. The contract value information is also stored in a separate MSSQL database, used by contract management system. After a... (more)

EsProc Enables Oracle JDBC to Speed Up Retrieve Process

Recently, a performance issue occurs in a big detail report, where the original data volume in the two data tables as it involved has exceeded 3 million rows; the data volume that the report can retrieve after filtering remains at round 2 million rows. As we expected before, by using paged retrieve method, this report would present a much higher performance. However, for the fact that the user also needs to export the data from the report, the only option is that the data retrieve can be achieved from Oracle at a time. As the JDBC of Oracle runs quite slowly, it takes least 6-7 ... (more)

Issue of Reporting Development in Different Databases

Recently a development team met some difficulties in data source computation when developing iReport reports. After the use of esProc for cross database computation, the problem is resolved. This is a project payment progress report, as part of a project management system. It's based on an Oracle database. The reports needs to present the project name, payment amount, contract value, payment progress (in percentage), and name of the project manager, etc., for all ongoing projects. Amount these the first 3 items contributes to the difficulties met by the development team. Note t... (more)

Parallelism Enhances Oracle Data Import Speed

Recently, we skillfully handled an industry project to import a great amount of data from file to Oracle in comparatively short time. At the beginning, we tried to import the data with the sqlldr of Oracle, only to find it is surprisingly time-consuming to load a great amount of data: Too slow if 2.5 hours have to be spent to import a table containing 80 million records. Later, by adopting the parallel import of sqlldr, the time is shortened to 0.8 hour. Here are the full details: Train of thoughts Split the data file to import into 10 shares. Then, with the multi-task paralleli... (more)

Solving Complex Computations

Reporting tool is good at chart & form design, style of landscaping, query interface, entry & report, and export & print. It is one of the tools that are applied most extensively. However, there are quite often complex computations in the report, which raises a very high requirement for technical capabilities of report designers, and is one of the biggest barriers in report design. esProc can cooperate with Java reporting tools and solve with ease the complex computations in the report. Case and Comparison A company has a High Growth SalesMan of the Year report, which analyzes, ... (more)