http://www.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/com.ibm.db2z10.doc.sqlref/src/tpc/db2z_catalogtablesintro.html Table space Table Indexes (Type1 ) Description SYSALTER SYSOBDS DSNDOB01 (N) DSNDOB02 (N) Contains one row for each table space or…

People Tools catalog tables. Projects PSPROJECTDEFN — Project header table PSPROJECTITEM — Definitions in the project Fields PSDBFIELD — Fields in the system PSXLATITEM — Translate Values Records PSRECDEFN — Record header table (record types) PSRECFI…

DB2的物化视图MQT是基于查询结果定义的一个表,MQT中包括的数据来自MQT定义所基于的一个或多个表, 使用MQT能够显著提高查询的操作性能. 数据库的视图和MQT都是基于一个查询来定义的.每当视图被引用时,视图所基于的查询便会运行. 但MQT实际上会将查询结果存储为数据,您能够使用MQT中的这些数据.而不是使用底层表中的数据. MQT 能够显著提高查询的性能,尤其是提高复杂查询的性能. 假设优化器确定查询或查询的一部分能够用一个 MQT 来解决,那么查询就能够被重写以便利用 MQT. MQT…

ASNTDIFF的diff table有一列类型为varchar 15000,z上创建db默认的pagesize是4K,无法创建table,所以需要创建一个大pagesize的database. db2 on z上create database命令和luw平台上不同,无法直接指定的pagesize,而是需要制定buffer pool.…

Error: SYSTEM:CATALOG (state=08000,code=101)org.apache.phoenix.exception.PhoenixIOException: SYSTEM:CATALOG at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:113) at org.apache.phoenix.query.ConnectionQueryServicesImpl.metaDa…

1 详细异常信息 rror: SYSTEM:CATALOG (state=,code=) org.apache.phoenix.exception.PhoenixIOException: SYSTEM:CATALOG at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:) at org.apache.phoenix.query.ConnectionQueryServicesImpl.metaData…

错误: org.apache.phoenix.exception.PhoenixIOException: SYSTEM.CATALOG at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:144) at org.apache.phoenix.query.ConnectionQueryServicesImpl.metaDataCoprocessorExec(ConnectionQueryService…

Rotating partitions   You can use the ALTER TABLE statement to rotate any logical partition to become the last partition. Rotating partitions is supported for partitioned (non-universal) table spaces and range-partitioned table spaces, but not for pa…

可以创建在任何表上的索引: Unique Index:An index that ensures that the value in a particular column or set of columns is unique. Primary index:A unique index on the primary key of the table. Secondary index:An index that is not a primary index. Clustering index:A…

The PREPARE statement creates an executable SQL statement from a string form of the statement. The character-string form is called a statement string. The executable form is called a prepared statement. Invocation This statement can only be embedded…