In Oracle Database 11g, A Result Cache is an area of memory in the Shared Global Area (SGA). It basically stores the results of a database query or query block for reuse.
By Caching the resu… Read More
“Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco… Read More
In Oracle Database 11g, if any ORA- error recorded in the alert log file, you can directly read it from X$DBGALERTEXT table which is available under SYS user.
In the previous version of… Read More
In Oracle Database 11g or Oracle Database 12c, Buffer Exterminate wait event is due to using Oracle’s automatic memory management when the MMON process shrinks the data buffer cache to… Read More
Resize Redo Log Files
Oracle Recommends that you size your online redo logs not to switch more than 5 or 6 times per hours during peak DML times.
Below Scripts help us to find out log switch… Read More
Generate AWR Report Manually :-
Step 1 ) First Find Out Snapshot ID from DBA_HIST_SNAPSHOT using below SQL:-
SQL>SELECT DBID, instance_number, snap_id, begin_interval_time, end_interval_t… Read More
Restoring a database is copying the physical files from a backup medium (disk or tape) to the appropriate file locations for database operation.
Recovery is a process of updating database fi… Read More
Data Guard Apply process in standby database can apply redo information directly and in that case it willbe called physical standby.
OR
It can apply SQL and in that case it will be called Lo… Read More
A standby database automatically applies redo logs when they arrive from the primary database. But in some cases, we want to create a time lag between the archiving of a redo log at the prim… Read More
Oracle Database 11g added some support for DDL logging of RDMS DDL statements into the alert log.
In Oracle Database 12c, DDL logging is by default OFF as default setting of parameter ENABLE… Read More
Oracle Database 12c introduces new administrative privileges that are more task-specific and least privileged to support specific administrative tasks.
The SYSDBA administrative privilege is… Read More
In earlier version of Oracle Database 11g, you can execute SQL commands and PL/SQL procedures from the RMAN command line which require SQL prefix and quotes as below: –
RMAN>sql &ls&hell…Read More
To unplug the database, use the ALTER PLUGGABLE DATABASE command with the UNPLUG INTO clause to specify the location of the XML metadata file.
Here, we are unplugging PDB2 database.
First, y… Read More
You can create Pluggable Database (PDB) using DBCA as well as SQL Plus.
Let see, how to create pluggable database (PDB) using SQL Plus.
Here, CDB1 Database already created and we are going t… Read More