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When cx_Oracle uses Oracle Client 12.2 or later, the session callback can also be the name of a PL/SQL procedure. A PL/SQL callback will be initiated only when the tag currently associated with a connection does not match the tag that is requested. A PL/SQL callback is most useful when using...
To disconnect a user from the Oracle Database Server, you use the EXIT command: SQL> EXIT To connect the OT user to the sample database located in the PDBORCL pluggable database, you enter the following command:
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Basis of Oracle PostgreSQL; Definition: Oracle is a relational management system.It is first database designed for grid computing. Unless DBA issues COMMIT command, no transaction is committed. DBMS > Microsoft SQL Server vs. Oracle vs. Teradata System Properties Comparison Microsoft SQL Server vs. Oracle vs. Teradata. DBMS > Oracle vs. PostgreSQL System Properties Comparison Oracle vs ...
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When Oracle performs a distributed SQL statement Oracle reserves an entry in the rollback segment area for the two-phase commit processing. This entry is held until the SQL statement is committed even if the SQL statement is a query.
SQL> connect bar/bar Connected. SQL> create or replace trigger bar_trig 2 after create on schema 3 begin 4 insert into mat.log values (systimestamp, 'bar', user, 5 ORA_DICT_OBJ_OWNER, ORA_DICT_OBJ_NAME); 6 end; 7 / Trigger created. Now let's create a table in foo's schema, as foo: SQL> connect foo/foo Connected.