The following table describes what lock modes on DML enqueues are gotten for table operations in a standard Oracle installation. The compatibility of lock modes usually are represented by the following matrix:
You can import database objects that are enabled for the IM column store using the TRANSFORM=INMEMORY:y option of the ‘impdp’ command. With this option, Data Pump keeps the IM column store clause for all objects that have one. When the TRANSFORM=INMEMORY:n option is specified, Data Pump drops the IM column store clause from all objects […]
After applying DB RU 19.12.0.0.210720 or DB RUR 19.11.1.0.210720, you may notice that the Block Change Tracking (BCT) file is getting created of a size that is not in line with the database size. Oracle recommends that you apply interim one-off Patch 33185773 to correct this problem(s) in the RU/RURs indicated above. Note the fix for this issue has […]
Oracle CBO performs transitivity as the first step in optimization. Transitivity means generating additional predicates based on existing predicates. The main advantage is the inclusion of extra access methods. Transitivity is not done for join predicates. Assume A, B, and C are columns. If A=5 and A=B, you can conclude that B=5. This can be […]
MV2OCI is a new tool is permitting the load data and migration from “on-premises” to Oracle Cloud Database leveraging on Oracle Data Pump and within one command. Data Pump Import lets you import data from Data Pump files residing on the Oracle Cloud Database node. For more information see Doc ID 2514026.1.
For all offerings using Oracle Database 19c or later, if you are not licensed for Oracle Multitenant, then you may have up to 3 user-created PDBs in a given container database at any time. For all offerings using Oracle Database 12.1 through 18c, if you are not licensed for Oracle Multitenant, then the container database […]
Starting with the Oracle Database 21c release, an application can change its database passwords without an administrator having to schedule downtime. To accomplish this, a database administrator can associate a profile having a non-zero limit for the PASSWORD_ROLLOVER_TIME password profile parameter, new with this release, with an application schema. This allows the database password of […]
DBMS_LOB.APPEND RAISES ORA-22275 WHEN CLOB RETURNED BY XMLSERIALIZE() GETS APPENDED TO ANOTHER CLOB REDISCOVERY INFORMATION: Error signaling Function: koklnflushint The fix for 32008819 is first included in 19.11.0.0.DBRU:210420 (APR 2021) DB Release Update(DB RU)
Oracle has released its Critical Patch Update for July 2021 to address 327 vulnerabilities across multiple products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Oracle July 2021 Critical Patch Update and apply the necessary updates. https://lnkd.in/d7fVVQQ