Oracle Database is the world's most popular database. Available on cloud and on-premise platforms, Oracle Database 19c is the most recent long term release, with an extended support window. Oracle Database 21c is the latest innovation release, initially available on Oracle cloud through Autonomous Database Free Tier and Database Cloud Service. For Oracle Database 21c documentation:https://docs.oracle.com/en/database/oracle/oracle-database/21/index.html For Oracle Database … Continue reading Oracle Database 21c Documentation
I got a question from one of my clients that he has a query that he used to run it successfully on Oracle Database 10g,but when he run the same query on Oracle Database 18.104.22.168, the query failed and the connection dropped with the following errors: He confirmed many times that the same query with … Continue reading ORA-03113 when running a specific query
According to oracle documentation:Specify a database's database identifier (DBID) when restoring a control file or server parameter file. Restrictions and Usage Notes for the SET DBID Command You should only run the SET DBID command in the following specialized circumstances: You are not connected to a recovery catalog and want to restore the control file … Continue reading When to use SET DBID in RMAN?
RMAN can optionally break up large files into sections and back up and restore these sections independently. This feature is built into RMAN. You can use it by creating multisection backups, which break up the files generated for the backup set into separate files. This can be done for backup sets and image copies. Each … Continue reading Oracle RMAN Multi-Section Feature
If you tried to increase the width of the "VALUE" column, nothing changed: I found that the NAME & Value columns have special names (for type column , it is normal): column NAME_COL_PLUS_SHOW_PARAM format A20column VALUE_COL_PLUS_SHOW_PARAM format A80 Now, it is fine.
When I tried to download and install Oracle client 19c, it was my surprise that there are two different versions. See the following information from the oracle site: So, what is the difference between these two versions?. After some research I found that: LINUX.X64_193000_client.zip is the normal (before 19c) installer-based client software, where you can choose … Continue reading What is the difference between Oracle Client 19c and Oracle Client Home 19c?
Background: One advantage of the "Connection Manager" is that it can act as if a proxy server between the database client and the database server, especially when there is a firewall between the client and the server.I installed Oracle Client 19c (only the "Connection Manager" and the "Oracle Net Listener" components): https://www.youtube.com/watch?v=R-tSVkRckfs Then I configured … Continue reading TNS-04012: Unable to start Oracle Connection Manager instance.