“Oracle *daily* TidBits” (#oratidbit) published on Facebook, Twitter, and Google+ during weekdays in October 2017. You will also see these tidbits, one tidbit at a time, for each page refresh on the right side of this blog as well… Hope you find these helpful to learn something new or to remind you of its existence and use.
| #oratidbit By default, the database retains optimizer statistics for 31 days. You can configure the retention period using the DBMS_STATS.ALTER_STATS_HISTORY_RETENTION procedure. |
| #oratidbit DBMS_STATS.REPORT_STATS_OPERATIONS generates a report of all statistics operations that occurred between two points in time. DBMS_STATS.REPORT_SINGLE_STATS_OPERATION generates a report of the specified operation. |
| #oratidbit #db12cR2 The terms ‘Patchset’, ‘Patchset Update’, and ‘Database Bundle Patch’ will no longer be meaningful for Oracle DB 12.2 software. RU (Release Update) and RUR (Release Update Revisions) replaces Patchset Update (PSU) strategy. |
| #oratidbit #db12cR2 New releases will be annual and the version will be the last two digits of the release year. The release originally planned as 12.2.0.2 will be release 18, and the release originally planned as 12.2.0.3 will be release 19. |
| #oratidbit #11gR2 11.2.0.4 Extended Support fee waived until Dec 2018. #12cR1 12.1.0.2 Extended Support fee waived until Jul 2019. |
| #oratidbit #db12cR2 New view DBA_STATEMENTS describes SQL statements in stored PL/SQL objects. It is now easier to find the stored program using SQL_ID of a statement. |
| #oratidbit #db12cR2 New view DBA_IDENTIFIERS displays information about the identifiers in all stored objects in the database. |
| #oratidbit #db12cR2 VALIDATE_CONVERSION function can be used to determine whether a given input value can be converted to the requested data type. |
| #oratidbit #db12cR2 The partition maintenance operations SPLIT PARTITION and SPLIT SUBPARTITION can be online operations, allowing concurrent DML operations with the ongoing partition maintenance operation. |
| #oratidbit #db12cR2 Database Configuration Assistant (DBCA) supports the creation of an Oracle Data Guard standby database from an existing primary database using the DBCA command-line interface. |
| #oratidbit #db12c Run SQL commands in RMAN without preceding the command with the SQL keyword and no need to enclose the SQL command in quotes. |
| #oratidbit #exadata18c New oedacli command to do various add/remove actions such as a node on a virtual cluster, database home on physical cluster, storage cell, database home, and so on. |
| #oratitbit #orcldb AWR_PDB_* Views on a CDB root show the AWR data stored on the CDB root, on a PDB show the AWR data stored on that PDB. |
| #oratidbit #orcldb The CDB_* views can be queried only by users with the SYSDBA system privilege or SELECT ANY DICTIONARY privilege, or SELECT_CATALOG_ROLE role, or by users with direct privileges granted to them. |
| #oratidbit #oracldb An INVISIBLE column in a table can be used as a partitioning key. A virtual column can be INVISIBLE. |
| #oratidbit #orcldb The ORAchk download zip file includes Health Check Catalog file ORAchk_Health_Check_Catalog.html. Catalog shows benefit and impact of the check and link to MOS notes. |
| #oratidbit #orcldb Oracle Health Check Collections Manager is a companion application (APEX) to ORAchk and EXAchk that gives an enterprise-wide view of the health check collection data. |
| #oratidbit #dbaas use the bkup_api utility to perform on-demand backups and to change how automatic backups are configured on Oracle Database Cloud Service. |
| #oratidbit #dbaas use the orec subcommand of the dbaascli utility to restore from backups on Oracle Database Cloud Service. |
| #oratidbit #dbaas use the dbpatchm subcommand of the dbaascli utility to apply patches on Oracle Database Cloud Service. |
| #oratidbit #dbaas use the oracle-dbcs-cli utility on your Linux computer to connect to Oracle Cloud and perform a variety of life-cycle and administration operations on Oracle Database Cloud Service deployments. |