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Certification. The beta period is closed for Oracle WebLogic Server 12c: Administration I (Exam 1Z1-133), and registration is now open for the production version of the exam. Passing this exam leads to the Oracle Certified Associate (OCA), Oracle WebLogic Server 12c Administrator certification. Oracle WebLogic Server sets the industry standard for Java application servers, and the "Oracle Certified Associate (OCA) - Oracle WebLogic Server 12c Administrator" certification sets the standard for WLS administrators. Obtaining this certification proves that you have the skills to set up server environments, tune performance and troubleshoot with confidence and raises the bar for your peers. Register and begin preparing for the exam now. You can get all preparation details, including exam objectives, number of questions, time allotments, and pricing on the Oracle Certification website. Visit pearsonvue.com/oracle and register for exam 1Z0-133. How to adjust the high watermark in ORACLE 10g – ALTER TABLE SHRINK « lutz hartmann as sysdba.
Hanging around in my hotel in Chicago because it is raining, I have been cruising around in the OTN forums which inspired me to write something about the High Watermark and the Oracle 10gR1 New Feature SEGMENT SHRINKING. The High Watermark is the maximum fill-grade a table has ever reached. Above the high watermark are only empty blocks. These blocks can be formatted or unformatted. First let’s have a look at the question when space is allocated - when you create a table at least one extent (contiguous blocks) is allocated to the table - if you have specified MINEXTENTS the number of MINEXTENTS extents will be allocated immedaitely to the table - if you have not specified MINEXTENTS then exactely one extent will be allocated (we will look at extent sizes later in another post).
Immediately after creation of the segment (table) the high watermark will be at the first block of the first extent as long as there are no inserts made. Let’s asume that we have filled a table with 100’0000 rows. How to adjust the high watermark in ORACLE 10g – ALTER TABLE SHRINK « lutz hartmann as sysdba. Optimizing Performance. This chapter describes how to optimize connection performance. This chapter contains these topics: Configuring Session Data Unit Under typical database configuration, Oracle Net encapsulates data into buffers the size of the session data unit (SDU) before sending the data across the network. Oracle Net sends each buffer when it is filled, flushed, or when an application tries to read data.
Adjusting the size of the SDU buffers relative to the amount of data provided to Oracle Net to send at any one time can improve performance, network utilization and memory consumption. The amount of data provided to Oracle Net to send at any one time can be referred to as the message size. Oracle Net assumes by default that the message size will normally vary between 0 and 2048 bytes, and infrequently, will be larger than 2048. Consider changing the SDU size when the predominant message size is smaller or larger than 2048. The SDU size can range from 512 bytes to 32767 bytes. Clientside Configuration. Toad for Oracle Freeware. Downloads | Choudhari. English Spelling practice: Spelling ie and ei words, the i before e except after c rule.