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Adding Far Sync Instances to Existing Data Guard Configuration
This post list the steps of adding far sync instances to an existing data guard configuration (for both primary and standby databases, to be used when standby become primary). Far sync is an new...
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APPEND_VALUES Hint and JDBC
APPEND_VALUE hint was introduced in 11gR2 for direct path inserts with values clause. Append hint is only useful when doing direct path loading with a select sub-query. On Oracle documentation mention...
View ArticleDatabases With Different Timezones in Same Server
There may be occasions where two database that reside in the same server is required to have different timezones. Changing the timezone of the database does not help in this case as this is applicable...
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Tunneling VNC Over SSH Using PuTTY
By default VNC runs on port 5901. This port may not always be open for access. Vnc access maybe needed for GUI base work such as runInstaller, DBCA, DBUA etc. (there are other ways to get GUI to...
View ArticleCreating Local Yum Repository Using an ISO or DVD for RHEL5, 6 and 7
Creating a local yum repository allows a convenient way of installing the required rpms as part of an Oracle installation. Using yum repository is convenient as oppose to installing required rpms via...
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RHEL 7 VNC Setup - "Oh no! Somethign has gone wrong"
If RHEL 7 was installed as a minimal install yum grouplistAvailable environment groups: Minimal Install then setting up vnc by installing tigervnc-server would result in following screen when login...
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Installing Oracle Database 12.1.0.2 on RHEL 7
Oracle has certified 12.1.0.2 on RHEL 7 kernels 3.10.0-54.0.1.el7 or later (1304727.1). The current RHEL 7 available from RedHat site is cat /etc/redhat-releaseRed Hat Enterprise Linux Server release...
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RMAN Backups on NFS
There are many options for mounting NFS to be used with various oracle files (binaries, datafiles, OCR). This post shows results of three mount options used and backup time for a single tablespace...
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Upgrading 12c CDB and PDB from 12.1.0.1 to 12.1.0.2
An earlier post listed the steps for upgrading non-CDB in a data guard configuration from 12.1.0.1 to 12.1.0.2. This post shows the steps for upgrading a CDB with a PDB from 12.1.0.1 to 12.1.0.2. This...
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ORA-00942 for WMSYS.OWM_MIG_PKG When Upgrading from 11.2.0.3 to 11.2.0.4
"ORA-06512: at "WMSYS.OWM_MIG_PKG", line 1579" was observed while upgrading 11.2.0.3 enterprise edition to 11.2.0.4. Upgrade was continued selecting the ignore option. Show below is the output from the...
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Upgrading RAC from 12.1.0.1 to 12.1.0.2 - Grid Infrastructure
This post gives the highlights of an grid infrastructure upgrade from 12.1.0.1 to 12.1.0.2. It is not a step by step guide to upgrade but to shows things to look out for during the upgrade. For...
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Upgrading RAC from 12.1.0.1 to 12.1.0.2 - Database
After upgrading the grid infrastructure from 12.1.0.1 to 12.1.0.2 the next step is the upgrade of RAC software and the database itself. There are earlier post which upgraded 12.1.0.1 to 12.1.0.2 in...
View ArticleTransportable Tablespaces With Segment Dependencies
Transportable tablespaces allow moving of tablespaces between databases. The transportable tablespace must contain all the segments within itself. If there are segment dependencies between tablespace...
View ArticleSP2-0310: unable to open file catmmig.sql
Patch 19518079 was needed to reflect the fact that DB was upgraded from 12.1.0.1 to 12.1.0.2.However this patch is now included in the PSU 12.1.0.2.2. This result in an error when the post patch...
View ArticleDBMS_AW_EXP: SYS.AW$EXPRESS: OLAP not enabled After Upgrading to 11.2.0.4...
"DBMS_AW_EXP: SYS.AW$EXPRESS: OLAP not enabled" message could be seen while using export data dump and import data pump after upgrading a 11.2.0.3 standard edition database to 11.2.0.4 standard...
View ArticleRestore RAC DB Backup as a Single Instnace DB
At times it may require a DBA to restore a backup of a RAC DB as a single instance DB. It could be that RAC DB is production system and copy of it is needed for development. This could be achieved with...
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Downgrade Grid Infrastructure from 11.2.0.4 to 11.1.0.7
This post shows the steps for downgrading clusterware from 11.2.0.4 to 11.1.0.7. This clusterware upgrade was a successful upgrade from 11.1.0.7 to 11.2.0.4 and only the clusterware is upgraded and the...
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Upgrading Single Instance on ASM from 11.2.0.3 to 11.2.0.4
This post list points to look out for when upgrading a 11.2.0.3 single instance DB on ASM (with role separation) to 11.2.0.4. It's not a comprehensive upgrade guide, refer oracle documentation for more...
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Upgrading Grid Infrastructure Used for Single Instance from 11.2.0.4 to 12.1.0.2
The system used for upgrade is the same system featured on an earlier post (upgrading single instance with ASM from 11.2.0.3 to 11.2.0.4). This post list the main points to look out for when upgrading...
View ArticleDowngrade Grid Infrastructure from 12.1.0.2 to 11.2.0.4
This post list steps for downgrading grid infrastructure from 12.1.0.2 to 11.2.0.4. The grid infrastructure upgrade has been successful on all nodes. If upgrade to 12.1.0.2 had failed on any of the...
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