show parameter type and value from v$parameter
SQL>
SQL> select name name_col_plus_show_param,
2 decode(type,1,'boolean',2,'string',
3 3,'integer',4,'file',
4 6,'big integer','unknown') type,
5 value value_col_plus_show_param
6 from v$parameter
7 where upper(name) like upper('%block%')
8 order by name_col_plus_show_param,rownum;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_block_buffers integer 0
db_block_checking string FALSE
db_block_checksum string TRUE
db_block_size integer 8192
db_file_multiblock_read_count integer 128
SQL>
SQL>
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