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DEFAULT role explained
It seems at times when roles are assigned they are not assigned as DEFAULT role to a user. The reason… READ MORE
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Global temporary tables
— Global temporary table which keeps records till session create global temporary table temp1( year number ) on commit preserve… READ MORE
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The CHECK_POLICY and CHECK_EXPIRATION options cannot be turned OFF when MUST_CHANGE is ON
When a user account is created on SQLServer on 2005 with user account set to “Enforce password policy” and “Enforce… READ MORE
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How to get current session id, process id, client process id?
SQL> select b.sid, b.serial#, a.spid processid, b.process clientpid from v$process a, v$session b where a.addr = b.paddr and b.audsid =… READ MORE
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Changing Oracle password in 11g using ALTER USER IDENTIFIED BY VALUES
In 11g the Oracle the hash password is no longer stored in DBA_USERS, it is stored in SYS.USER$ table in… READ MORE
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Oracle passwords in 11g
In 11g Oracle supports password to be case sensitive. But the password can be case insensitive depending on value of… READ MORE
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How to fix when receiving ORA-02082 when trying to drop a database link?
The issue occurs when there is a db link which is a loop back database link i.e. points to itself… READ MORE
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Information on “RESOURCE_LIMIT” parameter
“RESOURCE_LIMIT” parameter is used to enable/disable “KERNEL” resource type profiles. Password parameters are part of profiles but they are controlled… READ MORE
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Truncate and data_object_id explained
Shows a way to find if table was truncated, using object_id, data_object_id one can tell possibly if the table was… READ MORE
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How to find PSU patches installed in ORACLE_HOME?
Using OPatch with lsinventory and bugs_fixed options one can list the PSU patches installed in ORACLE_HOME Example: localhost:/home/oracle $ $ORACLE_HOME/OPatch/opatch… READ MORE
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How to fix cannot load program when trying to run sqlplus when using local connection?
On AIX ran into the following issue where sqlplus generated the following error when using local connection (bequeath). scott@localhost:/home/scott:$ sqlplus… READ MORE
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Tom Kyte’s utility to collect statistics
Tom Kyte’s following routine is a utility that can be used to to collect statistics of a session at the… READ MORE
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DBCC TRACEON
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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How to execution plan on SQLServer
In SQLServer Managment Studio to the execution plan one can use one of the following SET commands “SET SHOWPLAN_XML ON”… READ MORE
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How to free buffer cache?
Shows how to flush buffer cache and v$bh, you may only want to do this on Dev or Test enviornment… READ MORE
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How to view execution plan?
There are various methods of displaying execution plan. Here is few of them. 1) Using EXPLAIN PLAN and setting STATEMENT_ID… READ MORE
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How to enable auditing?
By setting the parameter “AUDIT_TRAIL” to “DB” or “OS”, one can enable auditing in the database. To change the value… READ MORE
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Materialized view – NOLOGGING
Compares refreshing materialized view with NOLOGGING 1) Refresh Materialized view with NOLOGGING -- Capture redo size before refreshing materialized view… READ MORE
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How to setup/install StatsPack
Statspack can be installed by executing the following script, it will prompt for password for user PERFSTAT, the tablespace for… READ MORE
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redo log generation during unrecoverable/nologging
# Capture amount of redo logs generated when table is created in UNRECOVERABLE SQL> select vs.name, vm.value from v$mystat vm,… READ MORE
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process control
# lists jobs in current session $ jobs # start job 1 (sleeps for 200 seconds) $ sleep 200 #… READ MORE
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Background process
There are multiple ways to place a program in background mode. Background mode is when the program runs and returns… READ MORE
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