What is the use of LogMiner in Oracle?
Oracle LogMiner, which is part of Oracle Database, enables you to query online and archived redo log files through a SQL interface. Redo log files contain information about the history of activity on a database.
Is LogMiner free?
Logminer was the cost-free API provided by Oracle to achieve what some thought was the answer to capturing up to the second changes in their Oracle database.
Is LogMiner deprecated?
The continuous_mine functionality of the LogMiner package is obsolete. It was deprecated in Oracle Database 12c Release 2 (12.2). There is no replacement functionality.”
How do I read a redo log in Oracle?
LogMiner retrieves information from those redo log files and returns it through the V$LOGMNR_CONTENTS view. You can then use SQL to query the V$LOGMNR_CONTENTS view, as you would any other view. Each select operation that you perform against the V$LOGMNR_CONTENTS view causes the redo log files to be read sequentially.
What is Oracle binary reader?
LogMiner is an Oracle API to read the online redo logs and archived redo log files. Binary Reader is an AWS DMS method that reads and parses the raw redo log files directly. These methods have the following features. Feature. LogMiner.
What is Oracle Golden Gate?
OCI GoldenGate is a real-time data mesh platform, providing a managed service allowing users to design, execute, orchestrate, and monitor their data replication and stream data processing solutions in the Oracle Cloud Infrastructure.
What is the purpose of redo log?
Redo entries record data that you can use to reconstruct all changes made to the database, including the undo segments. Therefore, the redo log also protects rollback data.
What is difference between archive and redo log?
Archive logs are archived redo(online) log files. In redo log files are all changes that happened to your data. If your database is in archivelog mode, than redo logs can’t be overwritten, they are archived in some other location when they are full. Redo and archive logs are used in various database recovery scenarios.
What is CDC used for?
The Centers for Disease Control and Prevention (CDC) serves as the national focus for developing and applying disease prevention and control, environmental health, and health promotion and health education activities designed to improve the health of the people of the United States.
What is Oracle PDB?
A pluggable database (PDB) is a portable collection of schemas, schema objects, and nonschema objects that appears to an Oracle Net client as a non-CDB. PDBs can be plugged into to CDBs.
How many redo logs are needed in Oracle?
one redo log files
Oracle Database uses only one redo log files at a time to store redo records written from the redo log buffer. The redo log file that LGWR is actively writing to is called the current redo log file. Redo log files that are required for instance recovery are called active redo log files.
What is the purpose of redo log files?
What size should redo log be?
Dell EMC recommends redo log group members sized between 512 MB to 2 GB for demanding OLTP systems. If the DBA is concerned that a larger redo log group will result in insufficient switching during non-peak period, the archive_lag_target parameter should be set to force periodic switching.