Creating pluggable database from another pdb, when pdb$seed in in mount state
→ Here we can see that new pluggable database PDB1 created from another pluggable database…
Read moreData Consistency
Data Consistency In Oracle Database, each user must see a consistent view of the data,…
Read moreIntroduction to Oracle SQL
Structured Query Language (SQL) is the set of statements with which all programs and usersaccess…
Read moreSample Schemas
In Oracle Database, a database schema is a collection of logical data structures, or schema…
Read moreDatafiles in Oracle (Physical Storage)
Overview of Data Files At the operating system level, Oracle Database stores database data in…
Read moreOracle Database 19c – Practical & Assignments
PARAMETER & PASSWORDFILE: * Create pfile from spfile to location '/home/oracle/init<sid.ora>' * Create password file…
Read moreSystem Change Numbers (SCNs)
A system change number (SCN) is a logical, internal time stamp used by Oracle Database.…
Read morePassword File management in 12C/19C
Below are the list of additional privileged user in 12c apart from the privileged user…
Read moreDetermining the Size of Oracle database tables and indexes
Useful views to get index details: dba_indexes dba_segments dba_ind_columns dba_ind_partitions user_indexes user_segments user_ind_columns user_ind_partitions Query…
Read moreOracle Instance and Database Shutdown Sequence
In a typical use case, you manually shut down the database, making it unavailable for…
Read moreASH (Active Session History) Report in Oracle
Oracle ASH report introduced in Oracle 10g release 2. ASH collects samples of active sessions…
Read moreDatabase Buffer Cache : SGA Component of Oracle
The database buffer cache, also called the buffer cache, is the memory area that stores…
Read moreContents in Flash Recovery Area(FRA)?
Oracle can store different kind of files under FRA: – backupset: for RMAN regular backups.…
Read moreLIKE Operator : Pattern-matching Conditions
The pattern-matching conditions compare character data. LIKE Condition * The LIKE conditions specify a test…
Read moreControl files in Oracle (Physical Storage)
The database control file is a small binary file associated with only one database. Each…
Read moreProtected: Workshop: Generative AI Resources
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Read moreFlush SQL Statement from Shared Pool
If you flush the shared pool, all the statements in cursor will be flushed. Sometimes…
Read moreOverview of Checkpoints !!
A checkpoint is a crucial mechanism in consistent database shutdowns, instance recovery, and Oracle Database…
Read moreDynamic Performance Views in Oracle
The dynamic performance views are special views that are continuously updated while a database is…
Read moreOracle Database Locking Mechanism – 1
A lock is a mechanism that prevents destructive interactions. Interactions are destructive when they incorrectly…
Read moreOPATCHAUTO-72083: Performing bootstrap operations failed OPATCHAUTO-72146: Failed to load patch !!
Problem:While patching 19.3 GRID_HOME with July2019 RU patch 19.4 I got this error: Solution:The problem…
Read moreInstance Recovery in Oracle
Instance recovery is the process of applying records in the online redo log to data…
Read moreOracle Instance and Database Startup Sequence
Typically, you manually start an instance, and then mount and open the database, making it…
Read moreOnline Redo Log in Oracle (Physical Storage)
The most crucial structure for recovery is the online redo log, which consists of two…
Read moreDeadlocks (ORA-00060) in Oracle
A deadlock is a situation in which two or more users are waiting for data…
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