sp_mda

Description

Returns server metadata.

Syntax

sp_mda parm1, parm2, parm3

Parameters

parm1 is a required parameter that indicates the client type. There are three valid values: 0, 1, or 2.

• 0 – returns MDAVERSION and MDARELEASEID rows.

• 1 – returns all the currently defined metadata.

• 2 – returns metadata limited to the following rows:

  • MDAVERSION

  • CONNECTCONFIG

  • SET_CATALOG

  • GET_CATALOG

  • SET_AUTOCOMMIT_ON

  • SET_AUTOCOMMIT_OFF

  • SET_ISOLATION

  • SET_ROWCOUNT

  • OUTERJOINS

parm2 is a required parameter that indicates the client request for sp_mda version to be returned. This parameter is not currently used by SYOSPMDA, and the MDAVERSION metadata is actually returned as a result of parm1. The valid values for parm2 are 0 and 1.

parm3 is an optional parameter that indicates the client version. This parameter is not currently used by SYOSPMDA. The range of valid values is 0-9.

Usage

• sp_mda consists of two programs: SYOSPMDA and SPMDACSP. SYOSPMDA establishes a server connection through the Server Option and reads the three parameters supplied with sp_mda. SPMDACSP determines if the user has chosen to use a DB2 table or a VSAM file as the means to store metadata attributes.

• To execute sp_mda, initiate an isql session to your CICS region, and enter commands like the following:

  exec sp_mda parm1,parm2,parm3 go

Results

The metadata returned consists of three columns:

• MDINFO

• QUERYTYPE

• QUERY

The MDINFO column indicates the metadata attribute name.

The QUERYTYPE column indicates how the QUERY column should be treated. The range of valid values is as follows:

• 1 – Treat QUERY as RPC

• 2 – Treat QUERY as language command

• 3 – Treat QUERY as unsupported

• 4 – Treat QUERY as Boolean literal

• 5 – Treat QUERY as integer literal

• 6 – Treat QUERY as string literal

• 7 – Treat QUERY as integer list literal

The QUERY column is a 255-byte varchar field containing either:

• A literal,

  or

• A query for execution at runtime to retrieve information. For queries that require parameters, a ? (question mark) is used to mark parameters.

The following example illustrates use and return values for sp_mda:

1>exec sp_mda 0,3 2>go

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