Thursday, April 12, 2012

Oracle Magazine–March 1995

In 1995 we have a change to the frequency of publication of Oracle Magazine. It is not published every 2 two months with 6 editions each year, as it is still the case.

The headline articles in the March/April 1994 edition of Oracle Magazine included Integrating Unstructured Information, Minimizing Client/Server Network Traffic with Oracle Forms 4.0, Relational Objects and how the Canadian Postal Service was using Oracle Technology to deliver mail on time.


Other articles include:

Dynamic SQL Comes to PL/SQL: Introduces us to the DBMS_SQL package. A useful quick reference one pager is given giving the details of each of the 15 procedures and functions, including, BIND_VARIABLE, CLOSE_CURSOR, COLUMN_VALUE, DEFINE_COLUMN, EXECUTE, EXECUTE_AND_FETCH, FETCH_ROWS, IS_OPEN, LAST_ERROR_POSITION, LAST_ROW_COUNT, LAST_ROW_ID, LAST_SQL_FUNCTION_CODE, OPEN_CURSOR, PARSE, VARIABLE_VALUE.

Personal Oracle 7 for Windows gets released and it now has a graphical administration tool to allow us to manage the database, including users, backup and recovery managers along with export/import and SQL*Loader and Oracle Objects for OLE. The hardware requirements included 8Mb of RAM and less than 30Mb of hard-disk space. How things have changed!!!. It was capable of running on Window 3.1 and was Windows 95 ready.

Rollback segments in in Oracle 7 allows use to now effectively manage our transactions. It gave the following recommendations:

  • Create a separate tablespace for rollback segments for administrative and monitoring purposes
  • Se the size of the tablespace according to the number and storage parameters of the rollback segments
  • Place your rollback segment tablespace on a separate disk device, if possible. Consider total I/O activities and spread I/O over available disk devices
  • Create one rollback segment for every four concurrent transactions
  • Don’t create more than 50 rollback segments
  • Create smaller rollback segments for OLTP applications. This increases the likelihood that rollback segments will be cached in SGA according to the least recently used algorithm, resulting in performance gain
  • Create larger rollback segments for decision support or back processing applications
  • Set initial to you average transaction size, set OPTIMAL to four to eight times larger than INITIAL

Oracle Magazine goes digital and interactive with a CD-ROM containing every issue of published in the previous two years and also contained a map of Oracle offices worldwide.

To view the cover page and the table of contents click on the above image or click here.

My Oracle Magazine Collection can be found here. You will find links to my blog posts on previous editions.

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