The DBMS_UTILITY package provides utility subprograms.
Notice
In the current OceanBase Database version, the DBMS_UTILITY package does not support passing parameters in the UTF-16 code.
Applicability
This topic applies only to OceanBase Database Enterprise Edition. OceanBase Database Community Edition provides only the MySQL mode.
Data structure
The DBMS_UTILITY package defines the following RECORD and TABLE types:
/*RECORD type*/
TYPE INSTANCE_RECORD IS RECORD (
INST_NUMBER NUMBER,
INST_NAME VARCHAR2(60));
/*TABLE types*/
TYPE UNCL_ARRAY IS TABLE OF VARCHAR2(32767) INDEX BY BINARY_INTEGER;
TYPE NAME_ARRAY IS TABLE OF VARCHAR2(128) INDEX BY BINARY_INTEGER;
TYPE QUOTED_NAME_ARRAY IS TABLE OF VARCHAR2(130) INDEX BY BINARY_INTEGER;
TYPE LNAME_ARRAY IS TABLE OF VARCHAR2(4000) INDEX BY BINARY_INTEGER;
TYPE MAXNAME_ARRAY IS TABLE OF VARCHAR2(32767) INDEX BY BINARY_INTEGER;
TYPE DBLINK_ARRAY IS TABLE OF VARCHAR2(128) INDEX BY BINARY_INTEGER;
TYPE INDEX_TABLE_TYPE IS TABLE OF BINARY_INTEGER INDEX BY BINARY_INTEGER;
TYPE NUMBER_ARRAY IS TABLE OF NUMBER INDEX BY BINARY_INTEGER;
TYPE INSTANCE_TABLE IS TABLE OF INSTANCE_RECORD INDEX BY BINARY_INTEGER;
Subprograms
The following table describes the DBMS_UTILITY subprograms supported by the current OceanBase Database version.
| Subprogram | Description |
|---|---|
| ACTIVE_INSTANCES | Returns active instances. |
| COMMA_TO_TABLE | Converts a list of names delimited by commas (,) into a PL table of names. |
| CURRENT_INSTANCE | Returns the ID of the currently connected instance. |
| DB_VERSION | Returns the version information of the database. |
| FORMAT_CALL_STACK | Formats the current call stack. |
| FORMAT_ERROR_BACKTRACE | Formats the backtrace of the call stack where the exception was thrown. |
| FORMAT_ERROR_STACK | Formats the current error stack. |
| GET_ENDIANNESS | Obtains the endianness of the database platform. |
| GET_HASH_VALUE | Calculates the hash value of a given string. |
| GET_PARAMETER_VALUE | Obtains the value of a specified init.ora parameter. |
| GET_SQL_HASH | Calculates the hash value of a specified string by using the MD5 algorithm. |
| GET_TIME | Returns the current time in hundredths of a second. |
| IS_BIT_SET | Checks the setting of a specified bit in a specified RAW value. |
| IS_CLUSTER_DATABASE | Checks whether the database is running in cluster database mode. |
| NAME_RESOLVE | Resolves a specified name. |
| NAME_TOKENIZE | Calls the parser to parse a specified name. |
| OLD_CURRENT_SCHEMA | Returns the session value from SYS_CONTEXT ('USERENV', 'CURRENT_SCHEMA'). |
| OLD_CURRENT_USER | Returns the session value from SYS_CONTEXT ('USERENV', 'CURRENT_USER'). |
| PORT_STRING | Returns a string that uniquely identifies the database version and OS. |
| TABLE_TO_COMMA | Converts a PL table of names into a list of names delimited by commas (,). |
