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Jul 17, 2026GBase 8a Parameter: _gcluster_optimizer_push_condition
In GBase 8a, the _gcluster_optimizer_push_condition parameter controls whether outer query conditions...
Jul 17, 20262 min read0 reactions0 comments
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Jul 17, 2026GBase 8a OLAP: Data Bucketing with NTILE
NTILE is a window function in GBase 8a that divides rows within a partition into a specified number...
Jul 17, 20262 min read0 reactions0 comments
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Jul 17, 2026GBase 8a OLAP: Using NTH_VALUE to Fetch the N‑th Row in a Window
NTH_VALUE is a window function in GBase 8a that returns the value of a specified column from the n‑th...
Jul 17, 20262 min read0 reactions0 comments
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Jul 17, 2026GBase 8a Cluster Expansion Requires All Nodes Online
When scaling out a gbase database cluster, the installer checks the online status and SSH...
Jul 17, 20261 min read0 reactions0 comments
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Jul 14, 2026Upgrading GBase 8a from V86 to V953: A Step‑by‑Step Migration Record
GBase 8a V86 has been widely deployed for years. As of early 2024, a direct upgrade to the latest...
Jul 14, 20262 min read0 reactions0 comments
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Jul 14, 2026Running Multiple Commands with sudo (Including source) in Linux
When managing a gbase database cluster, you often need to execute commands as the gbase user or with...
Jul 14, 20262 min read0 reactions0 comments
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Jul 14, 2026Configuring Kerberos Authentication for Hadoop in the GCDW Stack
When deploying GCDW (GBase Cloud Data Warehouse) with HDFS as the storage layer, a Kerberized Hadoop...
Jul 14, 20263 min read0 reactions0 comments
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Jul 14, 2026Configuring HDFS as Storage for GCDW Physical Deployment
The latest GCDW (GBase Cloud Data Warehouse) supports HDFS as its underlying storage layer,...
Jul 14, 20262 min read0 reactions0 comments
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Jul 13, 2026Repairing a Harbor-db Container PostgreSQL After Power Failure in a GBase 8a Stack
In a gbase database environment, Harbor is often used as a container image registry, with its...
Jul 13, 20263 min read0 reactions0 comments
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Jul 13, 2026Reducing GBase 8a gcware Log Volume to Save Disk I/O
The gcware component in a gbase database cluster is responsible for consistency management and node...
Jul 13, 20262 min read0 reactions0 comments
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Jul 13, 2026How to Block User Access on a Specific GBase 8a Coordinator Node
In a gbase database cluster, all coordinator nodes (gcluster) are peers and store identical user...
Jul 13, 20263 min read0 reactions0 comments
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Jul 12, 2026Optimizing OR Conditions in GBase 8a: Filter and Join Rewrites
When a query with OR causes a dramatic performance drop and the default execution plan is poor, you...
Jul 12, 20263 min read0 reactions0 comments