Converting Normal Disk Groups to Flex Disk Groups in Oracle 18c

In this post, You can convert a conventional disk group ie created before Oracle ASM 18c to an Oracle ASM flex disk group without using the restrictive mount (MOUNTED RESTRICTED) option. Migrating (converting) to a flex disk group can be performed for a NORMAL or HIGH redundancy disk group with the CONVERT REDUNDANCY TO FLEX […]

Read More

New look of ASMCA in Oracle 18c

Oracle ASM Configuration Assistant (ASMCA) supports installing and configuring Oracle ASM instances, disk groups, volumes, and Oracle Automatic Storage Management Cluster File System (Oracle ACFS). In addition, you can use the ASMCA command-line interface as a non-GUI utility. In Oracle 18c database, ASMCA comes up with new GUI interface which looks cool and easy to […]

Read More

Convert Single Instance Database to Oracle RAC

In this post, we can perform Convert Single Instance Database to Oracle RAC in Oracle 11gR2. Prerequisites: we already have single instance ASM database up and running. we have already have second node with ASM running. If you want to how to convert non asm database to asm database with duplicate command: Click Here RAC […]

Read More

Convert Non ASM database to ASM Database using Duplicate Database command

You can use these steps to migrate a NON-ASM database to ASM database in Oracle 11gR2. Prerequisite – ASM instance should be created and up and running. Single Instance Non ASM DB name Single Instance ASM DB name test testdb Step 1 : Check details of Single Instance Database :

Optionally, we can check size […]

Read More

Upgrading to Oracle Database 12cR2 Using Transient Logical Standby Method

Rolling upgrade with Transient Logical Standby is known as a MAA (Maximum Availability Architecture) technique, to minimize downtime during upgrade of Oracle database.  This note will document the steps for performing the Advanced Data Guard method of Transient Logical Rolling Upgrade. The following picture provides the general flow for an example migration of on-premise database […]

Read More

Upgrading Oracle Grid Infrastructure 11gR2 to 18c

Here I would be discussing how to upgrade Oracle 11gR2 ( Grid Infrastructure to Oracle 18c ( on the same server. This upgrade process was done on Linux 7 (x86_64). Before the GI upgrade backup the OCR manually. This could be used in downgrading the GI from to later one. If you want […]

Read More

Relink Oracle 12c Grid Infrastructure and RDBMS binaries.

In order to relink the Oracle Grid Infrastructure RAC/Cluster Installation, please follow the next steps after stopping all the services running: 1) As root OS user, please unlock the Grid Infrastructure Oracle Home (on every node) as follows:

2) As the Oracle Grid Infrastructure owner (on every node) relink the Grid Infrastructure Oracle Home […]

Read More

OPatch failed with error code 135 – Argument(s) Error… Given ‘ocmrf’ file does not exists

Issue Using opatch auto to apply patch 18706472, it failed with error code 135: opatchauto2017-09-23_04-21-57.log shows:


Solution Either open the permission of /home/grid path to be 755, eg:

The permission looks like:

Or create a response file under a directory accessible by both grid user and oracle user, for example: […]

Read More

Patch 27107360 – Oracle Grid Infrastructure PSU

Patch Information GI PSUs are cumulative and include the Database PSU and associated CPU program security content. This is Jan 2018 PSU having Patch number 27107360 for 11gR2. OPatch Utility Information You must use the OPatch utility version or later to apply this patch. Oracle recommends that you use the latest released OPatch version for 11.2 […]

Read More

CRS-2101:The OLR was formatted using version 3

Got this while trying to install RAC on Redhat Linux 7.3. fails with a message like

This is bug 18370031. Need to apply the patch before running Install of Clusterware fails while running on OL7 – ohasd fails to start (Doc ID 1959008.1)

Execute the script once you applied the patch.

Thank […]

Read More