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There are 2 types of DBCC TRACEON (session or global). Session trace is turned on that session only and global… READ MORE
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In SQLServer Managment Studio to the execution plan one can use one of the following SET commands “SET SHOWPLAN_XML ON”… READ MORE
Shows how to flush buffer cache and v$bh, you may only want to do this on Dev or Test enviornment… READ MORE
There are various methods of displaying execution plan. Here is few of them. 1) Using EXPLAIN PLAN and setting STATEMENT_ID… READ MORE
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By setting the parameter “AUDIT_TRAIL” to “DB” or “OS”, one can enable auditing in the database. To change the value… READ MORE
Compares refreshing materialized view with NOLOGGING 1) Refresh Materialized view with NOLOGGING -- Capture redo size before refreshing materialized view… READ MORE
Statspack can be installed by executing the following script, it will prompt for password for user PERFSTAT, the tablespace for… READ MORE
# Capture amount of redo logs generated when table is created in UNRECOVERABLE SQL> select vs.name, vm.value from v$mystat vm,… READ MORE
# lists jobs in current session $ jobs # start job 1 (sleeps for 200 seconds) $ sleep 200 #… READ MORE
There are multiple ways to place a program in background mode. Background mode is when the program runs and returns… READ MORE
For SQLServer using arthemetic and DATEADD one can modify date select getdate() -- today , getdate() + 1 -- tomorrow… READ MORE
Scenario 1) Default transaction using AUTONOMOUS TRANSACTION and checking records in table called APP_LOG at each step. The store procedure… READ MORE
Example of how AUTONOMOUS_TRANSACTION, it allows one to isolate a DML statements, the DML statements with the AUTONOMOUS transaction are… READ MORE
“Control what I can control”
~ Alex Lima
Alex Lima 