oracle – CodeRavo

Identifying and Counting Duplicate Values in Oracle Database Tables Using SQL

Introduction In database management, particularly when dealing with large datasets, it’s crucial to maintain data integrity … Identifying and Counting Duplicate Values in Oracle Database Tables Using SQLRead more

data integrity, duplicate-detection, exists-subquery, group by, having-clause, oracle, SQL

Monitoring Oracle Database Connections

Oracle databases handle numerous connections concurrently, and monitoring these connections is crucial for performance analysis, troubleshooting, … Monitoring Oracle Database ConnectionsRead more

connections, database, database administration, monitoring, oracle, performance, sessions, SQL, v-session

Inserting Multiple Rows into an Oracle Database

Inserting multiple rows into an Oracle database can be achieved through various methods. In this tutorial, … Inserting Multiple Rows into an Oracle DatabaseRead more

insert-all, insert-multiple-rows, oracle, pl-sql-block, simplified-insert, sql-loader, union-all

Retrieving Table Column Names in Oracle

Understanding Database Metadata When working with databases, it’s often necessary to understand the structure of the … Retrieving Table Column Names in OracleRead more

all-tab-columns, column names, data-dictionary, database, describe, metadata, oracle, SQL, table-structure

Troubleshooting Oracle Authentication Errors

Understanding Oracle Authentication and Common Errors Oracle databases rely on robust authentication mechanisms to control access … Troubleshooting Oracle Authentication ErrorsRead more

authentication, case sensitivity, database, dba-users, ora-01017, oracle, password, password-versions, sqlnet, sqlnet-ora, troubleshooting

Troubleshooting Oracle Connection Errors: The ORA-12560 Protocol Adapter Error

The ORA-12560: TNS:protocol adapter error is a common issue when connecting to an Oracle database. This … Troubleshooting Oracle Connection Errors: The ORA-12560 Protocol Adapter ErrorRead more

database administration, database-connection, networking, ora-12560, oracle, sql-plus, tns, tnsnames-ora, tnsping, troubleshooting

Understanding Oracle User Privileges and Roles

Understanding Oracle User Privileges and Roles In Oracle databases, controlling access to data and operations is … Understanding Oracle User Privileges and RolesRead more

database administration, dba, dba-sys-privs, oracle, privileges, roles, Security, SQL, user-management, user-sys-privs

Retrieving Table Schemas: Listing Database Columns

Understanding Database Schemas Databases organize data into tables, and each table is defined by a schema. … Retrieving Table Schemas: Listing Database ColumnsRead more

column-list, database, information-schema, metadata, MySQL, oracle, PostgreSQL, SQL, SQL Server, table-schema

Generating Unique Identifiers in Oracle Databases

Oracle databases, prior to version 12c, didn’t offer a direct equivalent to the AUTO_INCREMENT feature found … Generating Unique Identifiers in Oracle DatabasesRead more

auto-increment, database, database-design, identity, oracle, primary-key, sequence, SQL, trigger, unique-identifier

Understanding and Resolving Oracle's ORA-00054 Error

Understanding and Resolving Oracle’s ORA-00054 Error The ORA-00054: resource busy and acquire with NOWAIT specified or … Understanding and Resolving Oracle's ORA-00054 ErrorRead more

database, database administration, deadlock, locking, ora-00054, oracle, performance-tuning, SQL, transactions