Oracle Team

12cR2 Single-Tenant: Multitenant Features for All Editions

By Franck Pachot . Now that 12.2 is there, in the Oracle Public Cloud Service, I can share the slides of the presentation I made for Oracle Open World:(…)

12cR2 new index usage tracking

By Franck Pachot . A common question is: how to know which indexes are not used, so that I can drop them. If you tried to use index monitoring you probably have seen the limits of it which make it(…)

12cR2 has new SQL*Plus features

By Franck Pachot . 12cR2 is there. What's new in SQL*Plus? For sure, you can't expect lot of things from it. The new command line is the SQL*Developer sqlcl which aims to be 100% compatible with SQL*Plus with lot of(…)

Oracle 12cR2: MAX_PDBS

By Franck Pachot . Oracle database 12.2 is there on the Database Cloud Service, in multitenant. In EE High Performance or Extreme Performance, you have the multitenant option: you can create 4096 pluggable database (instead of 252 in 12.1). If(…)

Oracle 12cR2: Pluggable database relocation

By Franck Pachot . Here is, in my opinion, the most beautiful feature of the multitenant architecture. You know how I love Transportable Tablespaces. But here: No need to put the source in read/only No need to export/import the metadata(…)

Oracle 12c – DB_UNKNOWN in ASM

By William Sescu Have you ever noticed a DB_UNKNOWN directory in your ASM structure? It usually happens in combination with spfile creation in ASM, or with RMAN spfile restores to ASM. The correct location is +DATA/<SID>/PARAMETERFILE/SPFILE.<#>.<#>, and an ASM alias(…)

12cR2 multitenant containers in SQL_TRACE

By Franck Pachot . In multitenant you session can switch between containers. For example, since 12.1, a common user can switch explicitly between CDB$ROOT and any PDB with the 'ALTER SYSTEM SET CONTAINER'. Any user connected to a PDB will(…)

Oracle 12cR2 multitenant: Local UNDO

By Franck Pachot . Pluggable Databases are supposed to be isolated, containing the whole of user data and metadata. This is the definition of dictionary separation coming with multitenant architecture: only system data and metadata are at CDB level. User(…)

Oracle 12cR2 PL/SQL new feature: TNSPING from the database

By Franck Pachot . Database links are resolved with the server TNS_ADMIN configuration (sqlnet.ora and tnsnames.ora). You can use tnsping to check the resolution, but it supposes that you are on the server and have set the same environment(…)

Oracle Public Cloud: create a database from command line

By Franck Pachot . You love the Oracle Public Cloud with its simple Web interface? Great. But what if you want to automate a database creation from command line? Easy with the CURL and REST API.