In the first example it has begun the explain plan and founders on a 'slect' instead of 'select'.
In the second the 'into' is valid for PL/SQL but makes no sense in sqlplus.
The Oracle documentation describes the LONG datatype's main restrictions as follows: Despite the size of this list, we'll find that most of the time we are blocked by the two restrictions highlighted above.
For this reason, we'll concentrate on these in this article and provide some solutions to workaround them.
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A database is a logically coherent collection of data with some inherent meaning, representing some aspect of real world and which is designed, built and populated with data for a specific purpose. What is DBMS= It is a collection of programs that enables user to create and maintain a database.
By default the value is derived from a calculation based on the PROCESSES parameter.
sho parameter sessionsjava_max_sessionspace_size integer 0java_soft_sessionspace_limit integer 0license_max_sessions integer 0license_sessions_warning integer 0sessions integer 784shared_server_sessions integer sho parameter processesaq_tm_processes integer 1db_writer_processes integer 2gcs_server_processes integer 2global_txn_processes integer 1job_queue_processes integer 10log_archive_max_processes integer 4processes integer 500Parameter DB_FILES limits the total number of files in a database.
In fact, it's fair to say that there isn't much we can do with a LONG value once it has been inserted into a table.We can see that the not null constraints have been applied in different ways but ultimately they all have the same effect.We will now try to solve our problem by querying USER_TAB_COLUMNS, which has a column named "NULLABLE". It tells you how many blocks have free space for updates, right ? The above in bytes It does not tell you how many blocks have free space for updates.But it does not tell you how much free space in each block. We can tell you how many blocks are candidates for INSERTS (they are on the freelist) and blocks on the freelist have space for updates -- but -- there are blocks in the table that have space for updates but that are not on the freelist. It does not tell you how much space is free in each block (nothing does, typically there are thousands or hundreds of thousands of blocks in a table -- an analysis of the free space block by block is not practical.