Sunday , October 11 2026

Database Tutorials MSSQL, Oracle, PostgreSQL, MySQL, MariaDB, DB2, Sybase, Teradata, Big Data, NOSQL, MongoDB, Couchbase, Cassandra, Windows, Linux

Tag Archives: ORA-01555 Snapshot Too Old

ORA-01555 Snapshot Too Old / ORA-30036: unable to extend segment by string in undo tablespace

dbtut July 4, 2018 ORACLE 0

ORA-01555 Snapshot Too Old The “ORA-01555 Snapshot Too Old” error usually comes in long-running queries. In Oracle, previous changes of the data are retained in …

How To Create Tablespace On Oracle

dbtut June 29, 2018 ORACLE 0

Tablespaces are areas dedicated to storing objects in the database. Tablespaces are logical constructs. However, it contains physical data files or temp files. There are …